Seshachalam Chamarthy - Answers
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Form work stripping time Vs Compressive strength of Concrete
Seshachalam Chamarthy
Dear Gopal Mishra, Thanks for your reply. I saw your answer and refer to the article; both are representing general information. It is good. But my requirement is the relationship between the compressive strength of concrete vs. stripping time of formwork. Some relation is there either theoreticallyRead more
Dear Gopal Mishra,
Thanks for your reply.
I saw your answer and refer to the article; both are representing general information. It is good. But my requirement is the relationship between the compressive strength of concrete vs. stripping time of formwork.
Some relation is there either theoretically or experimentally. IS code 456 amendment 5 mentioned in a tabular format for stripping time for different structures. That means some relation was already derived. That is my requirement.
Based on the relationship & factors, we may improve the same further. That means reduces the stripping time and saving the construction time.
Thank you for your reply.
Seshachalam ch.
See lessForm work stripping time Vs Compressive strength of Concrete
Seshachalam Chamarthy
Dear APRAMEYANAGARAJA, I saw your answer and IS Code SP 24, and both are representing gaining compressive strength of concrete with time. The equation of compressive strength with respective time is good. But my requirement is the relationship between the compressive strength of concrete vs. strippiRead more
Dear APRAMEYANAGARAJA,
I saw your answer and IS Code SP 24, and both are representing gaining compressive strength of concrete with time. The equation of compressive strength with respective time is good. But my requirement is the relationship between the compressive strength of concrete vs. stripping time of formwork like relationship between stress vs. stripping time.
“As per IS 456:200 Clause 11.3 Stripping time – Forms shall not be released until the concrete has achieved a strength of at least twice the stress to which the concrete may be subjected at time of removal of formwork.”
Some relation is there either theoretically or experimentally. IS code 456 amendment 5 mentioned the tabular format for stripping time for different structures. That means some relation was already derived. That is my requirement.
Based on the relationship and factors, we may improve the same further. That means reduces the stripping time and saving the construction time.
Thank you for your reply.
Seshachalam ch.
See lessHow to calculate the quantity of water for a given concrete mix.?
Seshachalam Chamarthy
Calculate the existing moisture content in the aggregates (fine & coarse) and it will be deducted from the water content, which is calculated from water cement ratio Moisture content in Coarse aggregate - x1 Moisture content in fine aggregate - x2 Moisture content based on water cement ration (eRead more
Calculate the existing moisture content in the aggregates (fine & coarse) and it will be deducted from the water content, which is calculated from water cement ratio
Moisture content in Coarse aggregate – x1
Moisture content in fine aggregate – x2
Moisture content based on water cement ration (example -0.355) = 0.355*450kg/cum = 159.75
Net water content is = 159.75 – x1 – x2
See less