Slow setting admixture is used in mass concrete because of –
–
Answers were Sorted based on User's Feedback
Answer / raj
to postporn the initial setting time of concrete... why because if we need transport the concrete so far. we can't control the initial setting time in ordinary concrete so we use slow setting admixture to extend the initial setting time of concrete.
Is This Answer Correct ? | 23 Yes | 0 No |
Answer / md irshad anwer
Normally in mass concrete heat of hydration gets
comparatively more which could become a vital reason for
shrinkage crack.
As concrete sets slow, rate of hydration would be less and
hence heat of hydration will be less and as a result we can
avoid shrinkage crack due to extra heat.
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / abdur rasheed
slow setting admixture or retarder which is type-B according to ASTM 494 is used to slow down the setting time of concrete.Sometimes the batching plants are far away from the construction sites so in that case we have to use some chemicals to delay the setting time of concrete.
sugar is the commonly used retarder.Its usage depends upon the temperature of concrete,ambient temperature,dosage rate,type of admixtures etc
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / v.konaiya
because of workability and improve the concrete strength.
Is This Answer Correct ? | 5 Yes | 5 No |
while measuring slab for concrete Quantity it is practiced that steel quantity is not deducted in that particular qty.why?
minimum number of bars in a beam? minimum and maximum column size and beam size ? minimum and maximum aggregate size used in multistorey residential building for columns,beams,slabs?
What is the usage of zoom command?
how much quantity of 1.5" nails and 2.5" nails are required for conventional formwork shuttering?
What is the difference between dumpy level and auto level.
what is the minimum compressive strength in 7 days for m20,m25,m30
Define block?
For elevated service Reservoirs what will be the output of each skilled carpenter and bar bender.
what is the compressive strength of concrete cube of ratio 1:6:12?
how much used soil in 1 brick of standard size?
0 Answers Global Career Solutions,
I am a civil engineer . I am also selected for sbi clerk interview which is to be held on 4th May2010 is there anybody resembling the same? what question can be asked and what should be the probable answers?
form work including the props can be removed from beams only after