Answer / senthil473

after 28 days 99% of characteristics compressive strength will be achieved( rate of hydration is faster). after 28 days in a long course of time, say 1 year, the balance 1% strength will be achieved( rate of hydration is very slower). it is not desirable to keep the cube for 1 or 2 years and test , if the full strength is achieved. so we test after 28 days.

Answer / amr

The strength of a mix is described by its strength after 28 days from casting. if a concrete of M50; the compresive strength 50 unit achieve only after 28 days from casting

Answer / mr

In general concrete avmchieves it's maximum strength on 28 days , Thad why concrete cylinders are tested after 28 days to check whether the concrete has achieved the required strength

what is the difference between mortar and concrete???

3 Answers   Indiabulls,

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Pls. help. If a contract was awarded to a contractor in april 2012 with steel & cement base price as rs. 45/kg & 250/bag. Now in oct. 12 steel cement price becomes 55/kg & 290/ bag. How escalation will be calculated? Pls. tell complete calculation Regards,

4 Answers  

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16 questions out of 55 were from the book GUPTA N GUPTA OBJECTIVE of civil engineering. Total ques were 4 ques from hydraullics, 7 from BMC, 4 FROM SOM, 4 from soil mechanics, 6 from transportation, 5 from engineering drawing.

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tmt steel

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22. Are you willing to attend trainings, learn new skills and develop as a professional?

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Structural steel: For a thumb rule check in field, the allowable weight which can be hung down for 10mm dia mild steel rod, of yield value of 0, 25 KN/mm2 and applying a factor of safety 2.00, will be how many kg?

3 Answers  

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1.what type of the rock is most suitable for wet mix macadam in construction of road? 2.what is the highest maximum dry density and optimum moisture content can be acheive by using most suitable crush rock?

0 Answers  

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how much quantity of sand,cement,reqired for 100sqft of wall construction. And how much quantity required for plastring

1 Answers   Jade Software, NSP, TCS,

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how to estimate plastering quantity if the given object is in circular. 12 mm thick both side 1:3 example= i have 8.15 m2 how to estimate quantity

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can stub column take the load as main column

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what is concrete

9 Answers  

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Where will be the maximum bending moment in a TEE Beam?

2 Answers   Tulip,

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