Determination of initial and final setting time of cement

Dnyan Deshmukh

Staff member
Setting time of cement

Ref : IS 4031 (part V)

Purpose : To determine initial and final setting time of ordinary Portland cement

Significance : This test gives a judgement about the available time for transportation placing of concrete, commencement of curing and stripping

Apparatus:

  1. Vicat apparatus, (mould dia: 80mm, height: 40mm)
  2. Weights and Balance
  3. Trowel
  4. Initial and final setting time needle
  5. Time watch
Test Procedure:

  1. Take 400gm of cement and 85% water required for making cement paste of normal consistency
  2. The paste shall be gauged and filled into the vicat mould in specified manner within 3-5 minutes
  3. Start the time watch the moment water is added to the cement. The temperature of water and that of the test room at the time of gauging temperature shall be within 27 ± 2oC
  4. When the needle for initial setting time, brought into contact with the top surface and released quickly, fails to penetrate the paste block for 5 to 7mm measure from the bottom of the mould is taken as initial setting time
  5. When the needle for final setting time, placed gently on the surface makes an impression on the paste but the circular cutting edge of the attachment fails to do so, is taken as final setting time
Observation Table:

cement setting time calc.png


Limit : As per IS 4031 (part V) – 1988

Initial setting time not less than 30 minutes

Final setting time not more than 600 minutes

Frequency : For every batch received at site
 

Attachments

  • C4M Setting Time of Cement.docx
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Dnyan Deshmukh

Staff member
This is procedure for testing setting time, you can check all cement setting time with this process.

All document in this section are intended for professional usage.

So it will only enumerate the standard processes for testing. it can be modified as per the standards of company in which user is working, who intended to use it for professional document.
 
Setting time of cement

Ref : IS 4031 (part V)

Purpose : To determine initial and final setting time of ordinary Portland cement

Significance : This test gives a judgement about the available time for transportation placing of concrete, commencement of curing and stripping

Apparatus:

  1. Vicat apparatus, (mould dia: 80mm, height: 40mm)
  2. Weights and Balance
  3. Trowel
  4. Initial and final setting time needle
  5. Time watch
Test Procedure:

  1. Take 400gm of cement and 85% water required for making cement paste of normal consistency
  2. The paste shall be gauged and filled into the vicat mould in specified manner within 3-5 minutes
  3. Start the time watch the moment water is added to the cement. The temperature of water and that of the test room at the time of gauging temperature shall be within 27 ± 2oC
  4. When the needle for initial setting time, brought into contact with the top surface and released quickly, fails to penetrate the paste block for 5 to 7mm measure from the bottom of the mould is taken as initial setting time
  5. When the needle for final setting time, placed gently on the surface makes an impression on the paste but the circular cutting edge of the attachment fails to do so, is taken as final setting time
Observation Table:

View attachment 497


Limit : As per IS 4031 (part V) – 1988

Initial setting time not less than 30 minutes

Final setting time not more than 600 minutes

Frequency : For every batch received at site
Quality site lab visit check list please sir send me