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

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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)  

Initial Setting Time of Cement

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  Image Source:-civilread.com It is the time when water is added to cement and the time at which needle of 1mm 2 section fails to penetrate the depth block to a depth of 5 to 7 mm from the bottom of mould. Important Terms:- (i) Take 0.85P of water. (Where, P is normal consistency) (ii) 1mm 2  needle is used. (iii) Penetration should be 5 to 7 mm from bottom. (iv) Mixing, placing and testing should be done between 3 to 5 mm. Recent Post:- Aggregate Impact Value Test Test Procedure:- Image Source:civilblog.org (i) 400 gm of cement sample is taken. (ii) 0.85 P=(0.85 P X 26/100) X 400                 = 88.4 CC (CC-Cubic Centimeter)                                   (1 cc=1 ml) Image Source:aust.edu Also Read: Consistency Cement of Test (iii) 88.4 ml water is mixed and filled in the mould. (iv) 1mm 2  diameter of plunger is fixed and at bottom of vicat apparatus, mould will placed and needle will just touch and freely filled. Now reading=0 (v) After interval of sometimes we will proceed fo

Consistency Test of Cement

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Normal Consistency- It is defined as the percentage of water by weight of cement which produces a consistency which permits a plunger of 10 mm diameter to percentage up to a depth of 5 mm to 7 mm above the bottom of vicat's mould. Image Source:-www.civilread.com Recent Post:- Aggregate Impact Value Test Important Terms:- (i) Diameter of Plunger=10 mm (ii) Firstly, 25% weight of water is used which will mix with cement. Then used 26%, 27% and more. Image Source:-civilblog.org (iii) Repeat this procedure till reading not comes 5 mm to 7 mm. (iv) Entire mixing and filling of the mould including testing should be completed within 3 to 5 minutes. Test Procedure:- Image Source:-aust.edu Also Read: Elongation Test of an Aggregate (i) Take 400 gm of cement sample. (ii) 25% water i.e. 400X25/100=100 gm of water is added and mix properly. (iii) After mixing it is kept in mould and also kept on the vicat apparatus surface. (iv) 10 mm diameter needle will just touch on the surface of the mou

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