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CST CemTest User Manual

Cement strength tester
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CemTest
User Manual
Cement Strength Tester

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Summary of Contents for CST CemTest

  • Page 1 CemTest User Manual Cement Strength Tester...

  • Page 2: Table Of Contents

    Contents Chapter 1: Declaration of conformity Chapter 2: Safety information Chapter 3: Instrument overview The CemTest Instrument Testing Kit Contents Chapter 4: Getting started Turning on the instrument Operating the main menu Setting the date and time Chapter 5: Performing the test...
  • Page 3 The images may not perfectly or accurately depict the instrument. The illustration is purposely designed to demonstrate a principle or sequence of steps so that the viewer better understands what is going on. Details may be simplified or omitted, scale may be exaggerated, etc. CST Instruments Limited. www.cstinstruments.com...

  • Page 4: Chapter 1: Declaration Of Conformity

    Declaration of conformity The CemTest, manufactured by CST Instruments Limited, complies with the requirements of the following industry standards: Manufacturer CST Instruments Limited. Address 5 Leys Avenue, Letchworth Garden City, Hertfordshire, SG6 3EA Country United Kingdom Product name CemTest EN 61326-1:2013 - Electromagnetic compatibility (EMC)

  • Page 5: Chapter 2: Safety Information

    • Understand the screen display and alarm warnings prior to use. • If this product is not working properly, read page 37 and/or contact CST office or agent, for details refer to the contact section of the manual. • Ensure maintenance is carried out on the instrument.

  • Page 6: Chapter 3: Instrument Overview

    Instrument overview The CemTest Instrument 2.5” LCD colour display LEMO connector BACK / DOWN navigation button FORWARD / UP navigation button CONFIRM / OK button Protective rubber sleeve CST Instruments Limited. www.cstinstruments.com...

  • Page 7: Testing Kit Contents

    Testing Kit Contents Please ensure that the air release hole is not blocked by debris or submerged during testing. Probe connector Air release Digital scale Probe USB Memory stick USB charging cable Spoon Charger Carry case 500ml beaker CST Instruments Limited. www.cstinstruments.com...

  • Page 8: Chapter 4: Getting Started

    Press and hold the OK button for 3 seconds to power up. The startup screen will appear. Do not connect probe until the time and date are set. 13:11:05 Tue Jul 16 Press OK button to access main menu PROBE DISCONECTED PLEASE CONNECT THE MEASUREMENT PROBE CST Instruments Limited. www.cstinstruments.com...
  • Page 9 Press OK to display the Main Menu. Navigate using the navigation keys to select the required option. To confirm press OK. Perform test Set date & time View log Power off Delete log Press OK button to display MAIN MENU CST Instruments Limited. www.cstinstruments.com...

  • Page 10: Setting The Date And Time

    0.00 Set Date & Time / 01 / 2017 10 : 37 : 06 Cancel Rapid Slow Use NAVIGATION BUTTONS to make changes Press OK to confirm each change and move to another value / option CST Instruments Limited. www.cstinstruments.com...

  • Page 11: Chapter 5: Performing The Test

    Performing the test Note: The CemTest instrument has been designed for the accelerated testing of ordinary portland cement groups: CEM I, CEM II with a single mineral additive. It is able to test cement types: Normal, Rapid, Sulphate resistant, cements which achieve high strengths with strength enhancement additives (with no more than 1%).

  • Page 12: Chapter 6: Preparing The Sample

    Wait 10 seconds for the conductivity readings to stabilise, and press OK. This will store the conductivity reading on the instruments memory. Remove probe from the water / cement solution and clean and dry with a cloth. CST Instruments Limited. www.cstinstruments.com...

  • Page 13: Testing Cement Strength

    Testing cement strength Scroll to the perform test icon on the display and press OK Perform test 20.0 35.41 Press OK to continue CST Instruments Limited. www.cstinstruments.com...

  • Page 14: Entering The Cement Type

    Entering the cement type 14:48:45 Thu Apr 16 21.2 Select Cement Type Rapid Normal Slow Use NAVIGATION BUTTONS to select cement type Press OK to continue CST Instruments Limited. www.cstinstruments.com...

  • Page 15: Entering The Density (Rho) P

    (CEM I : 3.2), (CEM II : 3.0), (CEM III : 2.9 - 2.8). 14:48:45 Thu Apr 16 ° 20.0 C 35.41 Density of Cement: 2.8 - 3.3 (g/cm3) Use NAVIGATION BUTTONS to increase or decrease value of p Press OK to confirm CST Instruments Limited. www.cstinstruments.com...

  • Page 16: Entering The Fineness Of Cement (P)

    S -fineness grinding of cement powder: determined according to Blain method (Air Permeability) 14:48:45 Thu Apr 16 20.0 C 35.41 Fineness of Cement: 2800-5800 cm 3750 Use NAVIGATION BUTTONS to increase or decrease value of P Press OK to confirm CST Instruments Limited. www.cstinstruments.com...

  • Page 17: Entering The Consistency Of Normal Paste (H)

    H - consistency of normal paste: determined according to BS EN 196-1:2005 (Average used : 26%) 14:48:45 Thu Apr 16 20.0 C 35.41 Consistency of Paste: 22 - 35 (%) 22.0 Use NAVIGATION BUTTONS to increase or decrease value of H Press OK to confirm CST Instruments Limited. www.cstinstruments.com...

  • Page 18: Entering Additive Size (D)

    CEM - I: 0 - 5 % CEM - II: 6 - 35 % 14:48:45 Thu Apr 16 20.0 C 35.41 Additive Size: 0 - 35 (%) 15.0 Use NAVIGATION BUTTONS to increase or decrease value of D Press OK to confirm CST Instruments Limited. www.cstinstruments.com...

  • Page 19: Entering Additive Type (V) - Nu

    Please note that if the additive size is entered as 0 then the additive type screen (below) will not appear. 14:48:45 Thu Apr 16 20.0 C 35.41 Additive type: 0.5 - 2.0 (%) Use NAVIGATION BUTTONS to increase or decrease value of v (Nu) Press OK to confirm CST Instruments Limited. www.cstinstruments.com...
  • Page 20 (recommended start point is 1.2) until you have achieved original target Rcom. Once the additive influence v (Nu) has been established, it can be used in the future to de- termine strength of cements with the same additive. CST Instruments Limited. www.cstinstruments.com...

  • Page 21: Entering Water / Cement Ratio (Z)

    (Table to right) presents calculated values of impact for particular additive used. 14:48:45 Thu Apr 16 20.0 C 35.41 Water/Cement Ratio: 0.35 - 1.20 0.45 Use NAVIGATION BUTTONS to increase or decrease value of Z Press OK to confirm CST Instruments Limited. www.cstinstruments.com...

  • Page 22: Entering Curing Temperature (T)

    - temperature of the enviroment: normal laboratory conditions 20 to 22 °C 14:48:45 Thu Apr 16 20.0 C 35.41 Curing Temperature: 15 - 30 (degC) Use NAVIGATION BUTTONS to increase or decrease value of t Press OK to confirm CST Instruments Limited. www.cstinstruments.com...

  • Page 23: Entering Curing Time (T)

    T - curing time: full curing time of 28 days in laboratories 14:48:45 Thu Apr 16 20.0 C 35.41 Curing Time: 1 - 28 (days) Use NAVIGATION BUTTONS to increase or decrease value of T Press OK to confirm CST Instruments Limited. www.cstinstruments.com...

  • Page 24: Summary Screen Review

    Consistency of Paste(%): H = 22.0 Additive Size (%): D = 15.0 Alkalinity (%): u = 0.015 Additive type: v = Water/Cement Ratio: Z = 0.45 Curing Temperature (degC): t = Curing Time (days): T = Press OK to confirm CST Instruments Limited. www.cstinstruments.com...

  • Page 25: Cement Test Results

    Cement test results After each test this screen displays the final compressive/flexural strength 14:48:45 Thu Apr 16 Cement Compressive Strength Rcom: 0.00 Press OK to confirm CST Instruments Limited. www.cstinstruments.com...

  • Page 26: Saving Results

    Each test can be stored in the instrument’s internal memory 14:48:45 Thu Apr 16 DO YOU WISH TO SAVE THE RESULT? Log result 1 out of 100 Cancel Use NAVIGATION BUTTONS select OK or CANCEL button Press OK button to select CST Instruments Limited. www.cstinstruments.com...

  • Page 27: Chapter 7: Multiple Tests

    You can change or input new parameters. 14:48:45 Thu Apr 16 Dip the probe into Cement / Water Temperature and Conductivity Measurement in Progress Select Cement Type Temperature: 20.0 Rapid Slow PRESS UP TO RELEASE HOLD Press OK to confirm CST Instruments Limited. www.cstinstruments.com...
  • Page 28 Viewing the test results View log Press OK button to select CST Instruments Limited. www.cstinstruments.com...
  • Page 29 Test results Press Up / Down to view test results on the screen 13:11:12 Tue Jul 16 Press Up/Down to scroll through the logged events Use NAVIGATION BUTTONS to view event log Press OK button to continue CST Instruments Limited. www.cstinstruments.com...
  • Page 30 The event will be displayed on screen 14:48:45 Thu Apr 16 Event: Date: 16/04/17 Time: 10:48:44 Cement Type: RAPID Temperature: 21.4 Conductivity: 47.91 Rcom: 47.89 Rbend: 12.05 Rflex: 5.06 Use NAVIGATION BUTTONS to view event log Press OK button to continue CST Instruments Limited. www.cstinstruments.com...
  • Page 31 3) Insert the USB Stick into the designated slot. (make sure instrument is on) 4) The download will automatically begin. 5) Once the download is complete remove the USB and replace the access hatch. USB memory stick Rubber Protective Casing Charging lights Reset button USB Port Access Hatch CST Instruments Limited. www.cstinstruments.com...
  • Page 32 DO NOT DISCONNECT COMPLETED UNTIL COMPLETE The above screens are displayed during the downloading process Once you have the results on the memory stick, simply plug it into a computer/laptop. The results will appear as an excel spreadsheet. CST Instruments Limited. www.cstinstruments.com...
  • Page 33 Erase log Old test results can be erased from the instruments memory Erase log Press OK button to select CST Instruments Limited. www.cstinstruments.com...
  • Page 34 Erase log 14:48:45 Thu Apr 16 21.2 Erase the Log? Cancel Use NAVIGATION BUTTONS select OK or CANCEL button Press OK button to select CST Instruments Limited. www.cstinstruments.com...
  • Page 35 (please ensure red dots are lined up when connecting) Can take up to 5 hours to fully charge: The lights on the back of the instrument will turn when charging and will turn GREEN when fully charged. Top of machine CST Instruments Limited. www.cstinstruments.com...
  • Page 36 2) Take off the access hatch, using the latch at the top off the access hatch. 3) Insert a blunt ended implement ( i.e pen / pencil) into the reset port. 5) The screen will go blank and the startup logo will appear. 6) Replace the access hatch. Reset button CST Instruments Limited. www.cstinstruments.com...
  • Page 37 CST Instruments Limited. www.cstinstruments.com...
  • Page 38 Registered in the United Kingdom. Every effort has been made to ensure that the information in this manual is accurate. CST Instruments Limited is not responsible for printing or clerical errors. The images may not perfectly or accurately depict the instrument.

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