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You are here: Home / Articles / ASTM Standard Setting time for Cement | How setting time of cement is affected?

ASTM Standard Setting time for Cement | How setting time of cement is affected?

November 27, 2010 by admin 3 Comments

ASTM C150 SPECIFIED SET TIMES BY TEST METHOD:

How Setting Time of Cement is Affected:

Cement paste setting time is affected by a number of items including: cement fineness, water-cement ratio, chemical content (especially gypsum content) and admixtures.

Setting tests are used to characterize how a particular cement paste sets.  For construction purposes, the initial set must not be too soon and the final set must not be too late.

Additionally, setting times can give some indication of whether or not cement is undergoing normal hydration (PCA, 1988).  Normally, two setting times are defined:

Initial set. Occurs when the paste begins to stiffen considerably.

Final set. Occurs when the cement has hardened to the point at which it can sustain some load.

Filed Under: Articles, Civil Engg Construction and Graphics

Reader Interactions

Comments

  1. Syamsunderk says

    January 7, 2011 at 1:19 am

    I got a cement test result showing
    Initital setting time = 190 mins and
    final setting time as 270 mins Is it ok?

    Reply
    • mohsin says

      January 7, 2011 at 6:31 am

      Which Procedure you used ? i.e Vicat apparatus or any other …
      Your initial setting time is more than enough but final setting time seems good.

      Reply
  2. Tanver_IUT_CEE says

    January 15, 2012 at 8:12 pm

    its nice………..

    Reply

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