Important Points SOP (Standard Operating Procedure) During the Inspection of RCC NP4 Pipes

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Image
Important Points SOP (Standard Operating Procedure) During the Inspection of RCC NP4 Pipes: -    Image-Hydro Test (Photo Credit: Ritesh Raj) (1.) Firstly, approved QAP will be checked.  (2.) ID marks should be marked on the inner and outer sides of pipes.  Image-ID Mark (Photo Credit: Ritesh Raj)  (3.) To check the inner and outer diameter of pipes.   (4.) Smooth finishing and before dispatch of RCC pipes cement slurry or grouting where required.   (5.) Load test is required for RCC pipes as per IS codes. It is different for each dia, of RCC pipes.  Image-Plate Load Test (Photo Credit: Ritesh Raj)   (6.) Concrete mix design checked and in which cement content, cement brand, and water-cement ratio should be checked.  (7.) The straightness test to be checked of RCC pipes through the straightness rods to collinear visible.   (8.) As per requirement 2% of hydro tests are to be checked as IS:458 of the total ordered quantity.  Image-Hydro Test (Pressure Release) (Photo Credit: Ritesh Raj)  
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Fineness Test of Cement

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    Fineness Test of Cement

(Image Source:Civilread.com)

It is used to find the fineness of cement.

Imp. Points :-

(i) 90 micron (Brass) sieve is used.

(ii) Sieve shake for 10 minutes.

Also Read: Final setting Time of cement

(Image Source:youtube.com)


Test Procedure:-

(i) 100 gm cement sample will used.

(ii) It will pass through 90 micron sieve.

(iii) After 10 minutes the cement which is retained on sieve, we will take their weight and note them.

(iv) If weight comes=3.5 gm (Cement retained)

Also Read: Methodology for trenchless piping by jack pushing method

Fineness (%) = Residual Cement on Sieve (in gm)/Initially take sample 

                      = 3.5/100 *100

                      =3.5 %


Note:- Retained cement on sieve should not be more than 10 % of total weight of sample.




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Written By-
Ritesh Raj

Email Id-rajritesh.motiharirr@gmail.com


















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