| Topic : Construction Materials |
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Construction Planning & Management
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Activity:
Question posted: 02 03 2009 18:51:50 +0000,
5 answers, 1565 views, last activity
07 06 2010 20:18:08 +0000
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The following field test help you to access the quality of Cement at site.
1. It Shold be feel smooth when rubbed in two finger
2. When hand thrust in the Cement bag it should feel cool.
3. The colour of the cement should be gray.
1. Bag should have BIS mark.
2. It should be smooth and silky. (Fineness)
3. Adhesiveness.
4. No lump formation.
In the absence of a field laboratory,one can test observing & feeling. The coloure must be uniform (usually greenish grey),it feels cool to hand. When o cement is hand thrown to water in a trumbler, the particles should spread uniformly & before drowning it should float for some time. These tests are empirical in nature & does not guarentee the quality of cement. In order to assese the quality laboratory test is always recommended.
Answer by Mr. Davinder Anand, And Mr. Rajiv Kumar are very correct but in addition that one must check Batch No. As it is mentioned on every cement bag as week,month and year and one should consume cement within one month for RCC work.
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01. 02. 03. 04. 05. 06. 07. 08. |
Grade and color Fineness test Freshness test (Manufacturing date) Lump test Average weight (Average off 5 bags) Packing Paste test Floating test |
XX grade and Grey color (a) It feels silky smooth after rubbing (b) When hand is immersed in bag if feels cool. (W17 M04 Y96 (it indicates 13 days old cement) No lumps observed 49.5+50+50.5+51.50+49.5 Average 50.2 Kgs. Polythene Bags Edge of small cubes (prepared from paste) gained some strength after placing it in water for 24 hours It floats for some time before sinking in water. Sd/- DKA
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