Operating Instructions SilverSchmidt & Hammerlink
Contents
1. Review list 42 5 E io 0 Nma HALER GO Select 1 Select Summary for details of the series elect Se 2011 by Proceq SA 16 6 Units All units are supplied with standard accessories battery charger with USB cable data carrier with software carrying strip grinding stone chalk documentation and carrying case Part No Description 341 31 000 SilverSchmidt PC Type N 341 41 000 SilverSchmidt PC Type L 341 30 000 SilverSchmidt ST Type N 341 40 000 SilverSchmidt ST Type L Parts and Accessories 341 10 113 Cover for USB port 341 10 315 Plunger SilverSchmidt ST PC complete 341 10 400 SilverSchmidt anvil 342 10 400 Low range anvil 341 10 395 Upgrade kit for existing Euro anvil 341 80 211 Grinding stone 341 80 105 Carrying bag complete 351 90 018 USB cable 1 8m 341 80 112 USB charger global 341 80 203 Carrying strap 7 Technical Specifications Concrete Compressive Strength Range 10 MPa to 100 MPa 1450 14500 psi Range of custom curves can be defined independently Mechanical Data Impact energy N 2 207 Nm Hammer mass 115g Spring extension 75 mm 2 95 Dimensions of housing 55x55x 250mm _ 2 16 x 2 16 x 9 84 Weight 570g Memory Data No of impacts in a series Maximum 99 Memory capacity dependent on length of test series Example gt 400 series with 10 values per series Example gt 200 series with 20 values per series L 0 735 Nm Electrical Data Di2. cap 2 USB port 4 Plunger 6 Housing 2 3 The SilverSchmidt Display a a Hd Lt wey p HE i A pamiji ar i i single shot statistics review conv Curve units form factor 50 MARKER ZERO MARKER ANALOG SCALE UNIT ALERT SYMBOL IMPACT COUNTER one SINGLE IMPACT OR TOTALIZER Q VALUE op SERIES OF n A typical display after an impact shows e The actual Q value with a two and a half digit number e A pseudo analog scale mimicking the mechanical drag pointer e A counter either displaying the last two digits of the 4 digit totalizer or the actual number of valid impacts in a series of measurements 2011 by Proceq SA 6 2 4 Philosophy of the User Interface The user interface of the SilverSchmidt is based on a straightforward menu structure Each menu item has its own descriptive ICON making it language independent o TILT Tilting the device means that you raise the left side plunger side of the device to scroll to the icons to the left of the centered icon or you raise the right side of the de vice SELECTOR button side to scroll to the icons to the right of the centered icon o ROLL Rolling the device means that the device remains in the horizontal position but the display is rolled away from you or towards you o SELECT Press the SELECT button o TIP Depress the plunger a short distance but not enough to trigger it o IMPACT Depress the plunger until it trig
3. The display format is shown below Units Conversion Curve Statistics Mode Form Factor 2011 by Proceq SA 10 4 Applications 4 1 Uniformity Assessment The SilverSchmidt is primarily used to assess the uniformity of concrete strength within a structure and to localize areas of inferior quality Typically the procedure is as follows but the user is advised to refer to local standards for the variations in this procedure to be followed in the particular region Heavily textured surfaces soft surfaces or surfaces with loose mortar should be prepared with the grinding stone to provide a smooth test surface Complete Getting started Map out the test grid and if necessary prepare the surface Preparation Perform a few impacts to check the operation of the hammer Perform an impact Move to the next location on the grid and perform the next impact Continue until sufficient impacts have been made Terminate the series and review Determine the rebound number Move to the next location on the struc ture and determine the rebound number Repeat the process at sufficient locations on the structure Assess the uniformity using the sum mary tool in Hammerlink or export to 3rd party software PC model only Uniformity Assessment 2011 by Proceq SA 11 4 2 Estimation of in situ compressive strength Note When using a rebound hammer to estimate in situ compressive strength the reference c
4. USB driver installs a virtual COM port which is used to communicate with the SilverSchmidt When a SilverSchmidt has been found you will see another window Click on the Finish button to establish the connection 2011 by Proceq SA 19 9 1 Viewing the data The data stored on your SilverSchmidt will be displayed on the screen U PnC HAMPER ifm tiem VO SSB Se Series Surary fect hare Date Tire ee OXID 44 PM a a 26 0 ew 4 JE i DiS Loo AM 20 5 Himm j J 7 DAAN La AM PEM a it oe 03 93 2010 kig bre 24 5 Manet ei th hidni ine eT a The Form factor selected Mean hear Maer Maw Mean Gi Mihir J g Lt d d 1 3 The test series is identified by the Impact counter value There is a Name column where the user can give his own name to the series The Date and Time when the measurement series was made The Mean value which is either a Q value or a compressive strength unit The Averaging mode that was selected to perform the measurement series The number of upper and lower outliers The Valid Total number of impacts made in the measurement series The Std dev Standard deviation of the measurement series The Conv Curve conversion curve used for evaluating the measurements The Carbonation Factor carbonation correction factor patpi areren mode Upper atens Lower outers asie Total Sid dew Care cure Form factor Carbonatin
5. factor a a yd 1010 INIG 104 7 05 Grem Bo Loo SoM Covel iw LO 46Q Cuvechna moh LOD SO er Cie ma OR Lo 3 L Curent OT 1 09 Click on the double arrow icon in the impact counter column to see more details N 02 18 2010 11 03 4M Q alues diagram ordered by value 100 90 80 70 60 50 5 45 0 45 0 45 5 46 0 47 0 48 0 40 30 20 10 0 To do so click on Add 2011 by Proceq SA Q alues 46 0 43 0 45 0 45 5 47 0 42 5 45 0 44 5 mar 355 kg cm Statistics Measurements N 9 Invalid measurements Ni 1 11 Median EN Standard deviation Settings Averaging mode Conversion curve Form factor Carbonation depth Unit Serial number Spring type Comment Add F 355 kg cm 45 5 Q s 65 kg cm 2 8 Q Median EN Curve EU 100 1 00 kg cm 5H01 001 0444 SilverSchmidt M NOTE The user may also add a comment to the measurement series NOTE The user may alter the order in which the measurements are shown Click on measurement order to switch to ordered by value 20 Summary window In addition to the Series view described above Hammerlink also provides the user with a Sum mary window This is useful for uniformity testing to quickly identify areas of inferior quality Series Summary Click on the respective tab to switch between views amp 277 02 25 2010 6 03 AM NOTE To include or exclude a ser
6. in Excel locate the file and right click on it and Open with Microsoft Excel The data will be opened in an Excel document for further processing Or drag and drop the file into an open Excel window 2011 by Proceq SA 22 9 5 Deleting and restoring data The menu item Edit Delete allows you to delete one or more selected series from the downloaded data NOTE This does not delete data from the SilverSchmidt only data in the current project The menu item Edit Select all allows the user to select all series in the project for exporting etc Restoring original downloaded data Select the menu item File Restore all original data to restore the data to the original format as it was downloaded This is a useful feature if you have been manipulating the data but wish to go back to the raw data once again A warning will be given to say that the original data is about to be restored Confirm to restore NOTE Any names or comments that have been added to series will be lost Deleting data stored on the SilverSchmidt Select the menu item Device Delete all Data on Device to delete all data stored on the Silver Schmidt A warning will be given to say that the data is about to be deleted on the device Confirm to delete e NOTE Please note this will delete every measurement series It is not possible to delete individual series 9 6 Further Functions The following menu items are a
7. the defaults Should your instrument be fully discharged start with a reset after recharging Power OFF The SilverSchmidt will shut down automatically after 5 minutes of inactivity Standards and guidelines applied The following standards have been applied in SilverSchmidt for the procedure to determine the rebound number EN 12504 2 European Standard ASTM C 805 American Standard JGJ T 23 2001 China SilverSchmidt Models ST Standard model Software supplied for performing firmware upgrades and selecting statistics presets only PC Extended memory usage Custom curves Download to PC Full Hammerlink Software functionality N Type Standard impact energy The test object should have a minimum thickness of 100mm and be firmly fixed in the structure L Type Low impact energy suitable for brittle objects or structures less than 100 mm thick 2011 by Proceq SA 4 2 2 Components of the SilverSchmidt 7 Full electronic module ee hs Housing Bie gt Full mechanical module type N Parts 1 SELECT button 7 1 Battery board incl battery 2 Cover for USB port 8 Mechanical module complete 4 Plunger complete 9 Hammer guide bar and guide disc 5 Guide sleeve complete 10 Impact spring 6 Housing 11 Loading spring holder complete 7 Electronic module complete 12 Loading spring 13 Hammer mass 2 Tum guide sleeve to the end 2011 by Proceg SA sect Ld 1 SELECT button 3 LCD display 5 Guide sleeve
8. 0mm cube fo ss m characteristic in situ compressive strength expressed in equivalent strength of a 150 mm x 300 mm cylinder The SilverSchmit uses a 150 x 150 x150 mm cube as standard reference to convert from the averaged Q value to compressive strength In regions where the 28 strength is not determined on such standard cubes this value has to be multiplied by a suitable form factor to obtain comparable results The form factor implementation in SilverSchmidt is in line with the recommendations given in the major standards with the options Standard cylinder standard cube or user defined 2011 by Proceq SA 13 The default value is the standard cube 150 mm This has a form factor of 1 The factor used for the standard cylinder is derived from the information in EN 206 1 Table 7 Compressive strength classes for normal weight and heavy weight concrete This may be applied for all concrete mixtures above 2000 kg m The form factor for the standard cylinder ranges from 0 8 to 0 87 The third option is a user defined setting which can be freely selected in the range 0 8 1 2 This option has been included as the major standards differ on the implementation of form factors The user should consult the applicable standards and enter the recommended form factor accordingly 5 Operating the Instrument 5 1 Single shot mode Typically the major standards recommend to perform a few impacts prior to obtaining the rebound number to che
9. 12504 2 Requires a minimum of 9 impacts from which a median is calculated The series is invalid if more than 20 of the values differ from the median by more than 6 5 Q 2011 by Proceq SA 8 The ASTM method requires 10 impacts from which a mean is calculated The series is invalid if more than 20 of the values differ from the mean by more than 6 5 Q The JGJ method requires 16 impacts The 3 upper and lower outliers are deleted and a mean is calculated from the remaining 10 User preset is defined using Custom Statistics in Hammerlink see 9 7 3 3 Conversion Curve AE jpa Select a conversion curve EO 5 A PC Bill 10th percentile Reference Custom curve PC Model only Custom curves are defined in Hammerlink Step not required if 10th percentile reference Lai CURE 1 curve is selected Fle CURPLIE g C3 CURE 3 Select 3 4 Form Factor For advice on the use of form factors refer to 4 2 2 Cylinder Standard cube User defined Step not required if standard cube or cylinder selected Tilt to set the user defined form factor based on the local standard 2011 by Proceq SA 9 3 5 Checking the current Settings The current settings will be displayed when you apply the end of the plunger against the concrete or any firm surface and slightly push TIP You can review the settings at any time they are displayed momentarily and will not affect any current testing or settings
10. ard Warranty and Extended Warranty The standard warranty covers the electronic portion of the instrument for 24 months and the me chanical portion of the instrument for 6 months An extended warranty for one two or three years for the electronic portion of the instrument may be purchased up to 90 days of date of purchase 2011 by Proceq SA 18 9 Starting Hammerlink gj Hammerlink_Setup VXXX Locate the file Hammerlink_Setup on your computer or AT anaa Setup on the CD and click on it Follow the instructions you see Proce a on the screen Application settings The menu item File Application settings allows the user to select the language and the date and time format to be used Connecting to the SilverSchmidt Connect your SilverSchmidt to a free USB port then click on the icon to bring up the w following window Leave the settings as default or if you know the COM port you can enter it manually Choose communication type x Select the communication type Choose the interface with which the device is connected to the PC Click on Next gt Note Only communication types supported by the device are displayed USB devices might be shown as serial Serial port settings IV Find device automatically Scan ports or enter COM port number 6 Ethernet settings Device IP address iy 2 AG 2 ae J Stop search after first device has been Found Help lt Back Cancel Help The
11. aulo Brasil Cep 01414 000 Phone 55 11 3083 3889 info southamerica proceq com Proceq Trading Shanghai Co Unit B 19th Floor Five Continent International Mansion No 807 Zhao Jia Bang Road Shanghai 200032 China Phone 86 21 6317 7479 Fax 86 21 6317 5015 info china proceq com www proceq com Subject to change without notice Copyright 2011 by Proceg SA Schwerzenbach Part number 820 341 05 E ISO OC Ea 9001
12. chmicdt Click on the icon for conversion curves Select Conversion curves Select Custom curves ie i f L E L L pri Li fee pet Scroll to select the curve you wish to use and E mi T ii Pe Li p click on the select button All information contained in this documentation is presented in good faith and believed to be correct Proceq SA makes no warranties and excludes all liability as to the completeness and or accuracy of the information 2011 by Proceq SA 27 Proceq Europe Ringstrasse 2 8603 Schwerzenbach Switzerland Phone 41 43 355 3800 Fax 41 43 355 3812 info europe proceq com Proceg UK Ltd Bedford i lab Priory Business Park Stannard Way Bedford MK44 3RZ United Kingdom Phone 44 12 3483 4515 info uk proceq com Proceq USA Inc 117 Corporation Drive Aliquippa PA 15001 U S A Phone 1 724 512 0330 Fax 1 724 512 0331 info usa proceq com Proceq Asia Pte Ltd 12 New Industrial Road 02 02A Morningstar Centre Singapore 536202 Phone 65 6382 3966 Fax 65 6382 3307 info asia proceq com Proceq Rus LLC Ul Optikov 4 Korp 2 lit A Office 412 197374 St Petersburg Russia Phone Fax 7 812 448 3500 info russia proceq com Proceq Middle East P O Box 8365 SAIF Zone Sharjah United Arab Emirates Phone 97 1 6 557 8505 Fax 97 1 6 557 8606 info middleeast proceq com Proceq SAO Ltd South American Operations Rua Haddock Lobo 746 5 andar Cerqueira Cesar Sao P
13. ck the operation of the hammer In this mode the results are not saved Select Single Shot mode Confirm or cancel the action 2011 by Proceq SA 14 5 2 Measurement Series The number of impacts required for a valid rebound number depends on the statistics method se lected which should be chosen according to the local standard ee a Having selected any optional settings TITY Ibe required simply perform an impact to Tmp begin Impact No 1 Between impacts Move to next loca tion on grid Never impact on the same location twice Impact No 10 Press Select button to close the se ries Confirm or cancel the action Q value Standard Deviation No of impacts Impact counter Tilt for compressive strength estimate defined by the optional settings Units conversion curve form factor 5 3 Delete the last impact Outlier Typically the major standards require the user to disregard obvious outliers which may occur when impacting on a large aggregate or over a void Such outliers may be simply deleted 2011 by Proceq SA 15 Impact number 8 is an outlier 150 nos Delete Confirm The counter resets by one and the measurement can be repeated 5 4 Working with the data list The last 20 series recorded can be reviewed in the data list The PC model allows all series stored on the SilverSchmidt to be reviewed on the PC Select F cira en Ns 34 0 H m
14. e no carbonation is present A Sy Sy X m A number of recommendations describe the procedure for carrying out a carbonation test Two are mentioned here DAfStb Pr fung von Beton Empfehlung und Hinweise als Erg nzung zu DIN 1048 Heft 422 Berlin 1991 RILEM recommendation CPC 18 Measurement of hardened concrete Carbonation depth Either the carbonated layer must be removed before rebound testing or the rebound test should be carried out before and after removal of the carbonated layer using a grinding machine over a surface area of about 120mm diameter This allows a correction factor to be considered Sometimes referred to as a Time Coefficient Time coefficient Zf Ty n c f carb f n C Estimated compressive strength measured on non carbonated concrete surface f carb Estimated compressive strength measured on carbonated surface A correction factor obtained in this way may be used to compensate the result obtained in other areas of the structure subject to similar exposure conditions If you are using SilverSchmidt PC it may also be entered into the carbonation factor column in Hammerlink 4 2 2 Using Form Factors with SilverSchmidt The standard compressive strength is determined on standard tests specimens which are typically either cubes or cylinders For example EN 206 1 refers to fy cuec characteristic in situ compressive strength expressed in the equivalent strength of a 15
15. gers These simple actions are all that is required to navigate around the menu set up the Silver Schmidt perform measurements and review results and settings 2 5 Correct Use of the Hammer Use the grinding stone to smoothen the test surface Perform a few test impacts with the concrete test hammer on this smooth hard sur face before taking any measurements which you are going to evaluate Perform a consisten cy check on the test anvil The number of test impacts required for a valid rebound number is defined in the standards Typically this will be at least nine impacts The individual impact points must be spaced at least 25 mm apart Push the concrete test hammer against the test surface at moderate speed until the impact is triggered hammer in both hands perpendicular to the test surface before you trigger the Note The plunger generates a recoil when it deploys Always hold the concrete test impact 2011 by Proceq SA T 3 Optional Settings After selecting each of the optional settings defined below you will be asked to confirm or cancel the setting Select the units for compressive strength estimates Q kg cm N mm psi MPa Select a preset statistics method hu Regional Median Mean User preset In the example the regional setting in this case is ASTM C805 Another symbol may be present depending on the region e g JGJ for China The median setting is in accordance with EN
16. ies from the summary click on the summary symbol in the impact counter column This symbol is either black or greyed out which shows whether or not the series is included in the summary In order to make a sum mary all selected series have to have the same unit The summary view can be ad justed in a similar way to the detailed view of the series 9 2 Adjusting the settings Each of the settings averaging mode conversion curve form factor and unit that were used in the SilverSchmidt at the time of the measurement series can be adjusted subsequently in Hammerlink This can be done either by right clicking directly on the item in the appropriate column or by click ing on the blue setting item in the detailed view of a measurement series In each case a drop down selection box will appear with the choice of setting Carbonation factor Please refer to 4 2 1 9 3 Adjusting the date and time Right click in the Date amp Time column Adjust time Current time stamp of series Time stamp after adjustment Date Time Date Time The time will be adjusted for the oz 18 2010 1102 16 A oznam 11 02 16 selected series only Info Every selected measurement will be adjusted by the same amount of time sa a 2011 by Proceq SA 21 9 4 Exporting data Hammerlink allows you to export selected series or the entire project for use in third party programs Click in the table on the particular measurement series you
17. iii ii Close Define the statistics method as desired and load this setting onto the SilverSchmidt by clicking on the arrow in the centre of the window Selecting custom statistics on SilverSchmidt ARNE Select Statistics Select User Preset 2011 by Proceq SA 24 9 8 Custom curves Hammerlink allows you to create custom curves that are specific to your concrete mix and to upload them onto the SilverSchmidt PROCEQ HAMMERLINK Unnamed Select the menu item Custom curves to bring up the following window File Device Edit Help g up g Download all measurement series on SilverSchmidk Delete all measurement series on SilverSchmidk Y Custom curves Custom statistics a Upgrade SilverSchmidt Here you can review Cus tom curves you have previ ously created create new curves delete curves and upload curves on the Sil verSchmidt Upload custom curves a xX Local stored custom curves VIEW Create new curve Delete Click on Create new curve to bring up the following window fim a tanig a ft FH b ui gt Walked mange for G Meme Mahon Type in the name for the new curve and enter the parameters and the hammer type N or L for which it is applicable NOTE The curve may be exponential or 1 2 or 3 order polynomial It is also pos l sible to limit the valid range for the Q value Values outside thi
18. s range will not be evalu ated by the SilverSchmidt and this will be indicated on the instrument 2011 by Proceq SA 25 Once you have entered the data the curve will be displayed Please refer to the document Using Excel to define the Hammerlink custom curve parameters which can be found on www silverschmidt com under the downloads section Click on Create to complete the action Uploading the curve onto the SilverSchmidt From the Upload customer curves window Upload custom curves q x Local stored custom curves VIEW Create new curve Delete select the curve you have just created and click on Save on SilverSchmidt Upload custom curve to SilverSchmidt E X Curve to save on SilverSchmidk 1 Select a custom curve bo save on SilverSchmidk Jeu Curve Custom curves on Silwer Schmidt C1 Empty Delete Upload EU Curve as C1 C2 Empty Delete Upload EU Curve as C2 C3 Empty Delete Upload EU Curve as C3 2 Save the selected custom curve to slot C1 C or C3 You can store up to 3 custom curves at a time on the SilverSchmidt Choose the location of the curve C1 C2 or C3 and upload A warning window is displayed Click on Yes to complete the action NOTE You may create up to 200 curves which will be available on Hammerlink 2011 by Proceq SA 26 Using the curve on SilverSchmidt To use the custom curve on your SilverS
19. s symbol indicates important information Correct Usage e The instrument is only to be used for its designated purpose as describe herein e Replace faulty components only with original replacement parts from Proceq Accessories should only be installed or connected to the instrument if they are expressly authorized by Proceq If other accessories are installed or connected to the instrument then Proceq will accept no liability and the product guarantee is forfeit 2011 by Proceq SA 3 2 Getting started Note When shipped battery packs are not fully charged Prior to use please charge the battery completely To prevent the battery from damage avoid deep discharging 1 or storing it long term when empty Store the instrument at room temperature and charge the battery fully at least once a year 2 1 SilverSchmidt Basics Charging the SilverSchmidt In the case of a low battery alert you can still record approximately 100 200 impacts To recharge connect the SilverSchmidt to the charger or to a PC Approximately 90 minutes of charging will bring your SilverSchmidt to its full capacity Power ON Press the SELECT button to power on Plunger USB port LCD display SELECT button a Check the calibration of the hammer Perform a calibration check on your hammer as described in chapter 8 Performing a reset In case a reset is required perform an impact with the SELECT button pressed This will reset any parameter settings to
20. silver schmidt Operating Instructions SilverSchmidt amp Hammerlink proceq Made in Switzerland more than 50 years of know how you can measure Table of Contents 1 Safety and Liability 2 Getting started 2 1 SilverSchmidt Basics 2 2 Components of the SilverSchmidt 2 3 The SilverSchmidt Display 2 4 Philosophy of the User Interface 2 5 Correct Use of the Hammer 3 Optional Settings 3 1 Units 3 2 Statistics 3 3 Conversion Curve 3 4 Form Factor 3 5 Checking the current Settings 4 Applications 4 1 Uniformity Assessment 4 2 Estimation of in situ compressive strength 4 2 1 Carbonation 4 2 2 Using Form Factors with SilverSchmidt 5 Operating the Instrument 5 1 Single shot mode 5 2 Measurement Series 5 3 Delete the last impact Outlier 5 4 Working with the data list 6 Units 7 Technical Specifications 8 Maintenance and Support 9 Starting Hammerlink 9 1 Viewing the data 9 2 Adjusting the settings 9 3 Adjusting the date and time 9 4 Exporting data 9 5 Deleting and restoring data 9 6 Further Functions 9 7 Custom statistics 9 8 Custom curves NIN OORA O O OO Wao 0 h 11 12 12 13 14 14 15 15 16 17 17 18 19 20 21 21 22 23 23 24 25 1 Safety and Liability Safety and usage precautions This manual contains important information on the safety use and maintenance of the Silverschmidt Read through the manual carefully before the first use of
21. splay 17 x 71 pixel graphic Accumulator duty gt 5000 impacts between charges Charger connection USB type B 5V 100 mA Environmental conditions Operating temperature Storage temperature 0 to 50 C 32 to 122 F 10 to 70 C 14 to 148 F based on BAM reference curve 2011 by Proceq SA 17 8 Maintenance and Support Self test function The instrument performs a number of self test checks and gives an alert when there is a problem These three alerts show the battery status Low battery Battery full Battery charging Low impact energy The impact spring is out of tolerance and should be replaced It is recommended to return the SilverSchmidt to an authorized service centre Checking the calibration on the anvil The SilverSchmidt checks for correct impact energy with each and every impact Nevertheless it is recommended to check the calibration on a regular basis Perform a series of 10 impacts on the anvil Part No 341 10 400 e Check that the average Q value lies within the tolerance shown on the label If it is out of tolerance it should be returned to an authorized service centre for recalibration Support Concept Proceq is committed to providing a complete support service for this instrument by means of our global service and support facilities It is recommended that the user register the product on www proceq com to obtain the latest on available updates and other valuable information Stand
22. t the in situ tests EN 13791 recommends the use of a lower 10th percentile curve This means that 90 of the data pairs lie above the curve and only 10 lie below e ASTM C805 refers to the guideline ACI 228 1R 03 In chapter 6 of this document a simplified method 6 2 4 Alternative method Carino 1993 which takes into account the uncertainties of both the rebound method and the destructive testing of the core samples is presented Again a lower 10th percentile curve is recommended Such custom curves either polynomial or exponential may be defined in Hammerlink and downloaded onto the SilverSchmidt PC making it the ideal instrument for carrying out such tests See also the document Using EXCEL to define the parameters for custom curves in Hammerlink provided on the CD 4 2 1 Carbonation Carbonation forms a hardened layer on the surface and as this layer increases it can lead to a significant over estimation possibly as high as 50 of the compressive strength of the underlying concrete when measuring with a rebound hammer The depth of the carbonation layer can be simply determined using an indicator solution of phenolphthalein in ethanol The indicator is simply sprayed onto a fresh fracture surface or core sample 2011 by Proceq SA 12 A non carbonated layer with a pH of gt 9 2 shows purple A carbonated layer with a pH lt 9 2 shows colourless pH lt 9 2 colourless carbonation is present S N pH gt 9 2 purpl
23. the instrument Keep the manual in a safe place for future reference Liability and warranty Proceq s General Terms and Conditions of Sale and Delivery apply in all cases Warranty and li ability claims arising from personal injury and damage to property cannot be upheld if they are due to one or more of the following causes Failure to use the instrument in accordance with its designated use as described in this manual e Incorrect performance check for operation and maintenance of the instrument and its components Failure to adhere to the sections of the manual dealing with the performance check operation and maintenance of the instrument and its components e Unauthorized structural modifications to the instrument and its components Serious damage resulting from the effects of foreign bodies accidents vandalism and force majeure All information contained in this documentation is presented in good faith and believed to be correct Proceq SA makes no warranties and excludes all liability as to the completeness and or accuracy of the information Safety instructions The instrument is not allowed to be operated by children or anyone under the influence of alcohol drugs or pharmaceutical preparations Anyone who is not familiar with this manual must be supervised when using the instrument Labelling The following icons are used in conjunction with all important safety notes used in this manual Note l Thi
24. urve s provided by the manufacturer must be used with some caution The correlation between rebound number and compressive strength is very much dependent on the concrete mixture under test Details on the derivation of reference I curve s used in the SilverSchmidt are provided in the document The SilverSchmidt Reference Curve which can be found on the CD The user is advised to take this into account when deciding on the suitability of the reference curve chosen to the concrete under test In order to obtain an estimate of in situ compressive strength using a rebound hammer in accordance with the major standards a calibration is necessary Independent testing has shown that the SilverSchmidt can give a better correlation with lower dispersion than a classical hammer when calibrated for a specific mix The recommended method is to correlate the rebound hammer measurements with destructive tests made on core samples or cubes cylinders made from the same concrete mixture as that used in the structure Please refer to the following standards and guidelines for details of the requirements for creating such a correlation curve EN 13791 Europe ASTM C805 ACI 228 1R 03 North America JGJ T23 2001 China The resulting data is used either to shift a reference conversion curve or to define a custom curve for that particular mix Typically the curve is defined to provide a safety margin to take into account the various factors that may affec
25. vailable via the icons at the top of the screen internet or from local files Open project icon Allows you to open a previously saved project It is also possible to Upgrade SilverSchmidt firmware icon Allows you to upgrade your firmware via the ad drop a pgh file onto Hammerlink to open it Save project icon Allows you to save the current project Note this icon is greyed Lal out if you have opened a previously saved project i Print icon Allows you to print out the project You may select in the printer dialog if you want to print out all of the data or selected readings only 2011 by Proceq SA 23 9 7 Custom statistics Hammerlink allows you to create a user defined statistics method and to upload this onto the Silver Schmidt Select the menu item Custom statis Gi PROCEQ HAMMERLIME U d l i Q Q paddies t tics to bring up the following win File Device Edit Help dow Download all measurement series on SilverSchmidt Delete all measurement series an SilverSchmidk Custom Curves Upgrade SilverSchmidk Save custom statistics on device l X Custom statistics saved on device Statistic method mean 7 Minimum impacts 10 Define a custom statistics Statistic method Mean S Minimum impacts 10 Maximum impacts 12 Maximum impacts 12 Upper outliers 3 Upper outliers a Lower outliers 3 Lower outliers 3 K
26. wish to export It will be highlighted as shown Energo mode Upper milieri Lower cuthers Vakd Total Sid dav Corm curve For factor Madan iN gm GS khan Gurve E ig OAFLA L50 AM Mean La ii Leg Curve EL IFA OSA HEDER AM 0 Aleve Mean o g ar 0 5 Mimmi Curve EL IG Click on the Copy as text icon The data for this measurement series is copied to the clipboard and can be pasted into another program such as Excel If you wish to export the actual impact values of the series you have to display them by clicking on the double arrow icon as described above before you Copy as text x Click on the Copy as picture icon For exporting the selected items only into an Al other document or report This performs the same action as above but the data is exported in the form of a picture rather than as text data Export as text icon Allows you to export the entire project data as a text file that can then be imported into another program such as Excel Click on the Export as text icon This will open the Save As window where you can define the location in which you wish to store the txt file NOTE Hammerlink has two tabs with two display formats Series and Summary l When performing this operation the project data will be exported in the format defined by the active Tab i e either in Series or Summary format To open the file
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