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How to calculate admixture for transporting concrete for long distances to delay setting time in case of long-distance transportation in transit mixers?
What is the moisture content limits in plastered walls before we take up the painting work?
Moisture readings must be taken to assure that not more than 12% moisture content is in the plaster prior to the application of any coating.
Moisture readings must be taken to assure that not more than 12% moisture content is in the plaster prior to the application of any coating.
See lessWhy are Concrete roads preferred over Asphalt Road?
The concrete roads are preferred over asphalt road because Concrete roads are long-lasting around the 20-40 year lifespan. It is also recycled after crushing into gravels, so It cost nothing or very little cost. It creates less environmental pollution than an asphalt road. High load and pressure resRead more
The concrete roads are preferred over asphalt road because Concrete roads are long-lasting around the 20-40 year lifespan.
It is also recycled after crushing into gravels, so It cost nothing or very little cost.
It creates less environmental pollution than an asphalt road.
High load and pressure resistance.
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What are the responsibilities of a construction manager?
The following roles or responsibility should have in construction manager are:- Review work on daily basis Meet contractual condition of performance Review the project in depth Take out the estimate of whole project Schedule activity according to time limit of project Prepare internal and external rRead more
The following roles or responsibility should have in construction manager are:-
How to pour Concrete in Narrow/Sleak Columns?
You can use Self Compacted Concrete to use for narrow columns. It also used where the reinforcement is heavy and process of compaction is not available/difficult to compact.
You can use Self Compacted Concrete to use for narrow columns. It also used where the reinforcement is heavy and process of compaction is not available/difficult to compact.
See lessWhat is the percentage of stone dust that can be added along with fine aggregate in different designs of concrete (Say M-20)? What is the difference between the concrete with and without dust? Does adding dust helps in increasing/decreasing strength?
Difference between concrete with and without dust: The compressive strength of concrete will increase after adding dust in it. Various research shows maximum compressive strength at 60% dust used in concrete. When we talk about workability then dust concrete has low workability as compared to no dusRead more
The compressive strength of concrete will increase after adding dust in it.
Various research shows maximum compressive strength at 60% dust used in concrete.
When we talk about workability then dust concrete has low workability as compared to no dust concrete.
I hope so you found my answer more helpful to you.
Thank You.
See lessHow to rectify the old cement pipeline leakage problem?
control the pipe leackage by using NiTo bond chemical first we need to dry that pipe Chip the pipe surface where leakage problem is there Brush the chipped surface completely and clean with water. And allow to dry Then apply Ninto bond coating on the surface The complete the mason work by fresh conRead more
control the pipe leackage by using NiTo bond chemical
What type of reinforcement used in prestressing concrete? Is it either the standard reinforcement used in conventional RCC structure, or is there any particular type or category of reinforcement for prestressing?
Hi, The prestressing steel used for prestressed concrete can take the form of Tendons Cables Wires – (Plain wire and Indented Wire) Strands –(Two-wire, three-wire and seven-wire strand) Bars The types of prestressing steel are: Cold Worked Prestressing steel Stress-relieving prestressing steel StraiRead more
Hi,
The prestressing steel used for prestressed concrete can take the form of
The types of prestressing steel are:
Read More: Specifications of Prestressing Steel in Prestressed Concrete
Difference between Reinforcing Steel and Prestressing Steel
Both R.C.C and Prestressed Concrete employs steel bars or wires in order to sustain tension. But both the types of concrete make use of different steel.
The steel used by R.C.C concrete can be:
The steel used in Prestressed Concrete are wires, strands, solid bars as mentioned above. Prestressed concrete uses high tensile strength steel that is manufactured by increasing the carbon content in steel compared to ordinary mild steel used in R.C.C.
In prestressed concrete, the steel used is tensioned or prestressed. This results in loss of prestress in a range of about 20%. The use of mild steel bars or HYSD bars bring a greater loss than this value. Hence, it is necessary to have high strength tensile bars for prestressed concrete.
Also Read: What is Steel Reinforcement? Types and Properties of Steel Reinforcement?
Regards
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Komal Bhandakkar
The admixture which we use in the concrete for delaying its setting time then such type of admixtures are called as retarders. Gypsum is a retarding agent which we add in the cement during its manufacturing process. Gypsum is work as a starting agent as well as it restricts soundness in the cement.Read more
The admixture which we use in the concrete for delaying its setting time then such type of admixtures are called as retarders.
Gypsum is a retarding agent which we add in the cement during its manufacturing process.
Gypsum is work as a starting agent as well as it restricts soundness in the cement.
Apart from gypsum of various admixtures already listed in some previous post.
The chemical name of gypsum is calcium sulphate.
Thank you.
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