Answer Posted / 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

how to calculate labour strength for work for RCC,brickwork,blockwork,in &out plaster,flooring,dado,door frame & shutter,painting etc for constructing highrise building?

3803

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What is the quantity of cement used for stone pitching work of 100sqm 225mm thick and cement mortar of 1:6? And how?

5168

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What do you mean by bond? What are the different types of bonds?

2216

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how much area can be platered by a mason for exterior

1940

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crank types

2316

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what is the procedure of wet seiving. n percentage of silt in different type of soil?

2609

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what is work of planning deptt. in any construction compny (in road project)

2436

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what is stressing

6642

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Stringer How many cm goes to landind

1749

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If density of cement is 1500 Kg/m3, the how is specific gravity 3.15 ? (Density of water is 1000 Kg/m3)

2314

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What is the meaning of Brick- M 35 grade? Is it a common brick or it's a concrete brick?

1878

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is there any codal provision for soil cousion over the Hume pipe of Dia 1.2 m.

2097

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if in column reinforcement lower dia connect to higher dia then from wher we want to start higher dia steel

1392

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How much cements bag (or in KG) required for 1 Sq. M concrete, for M-30 grad concrete as per CPWD and where is thr proof on site

1690

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For making a new road in a village having a school & hospital , tell the steps of construction systemically ?

1639

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