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How does concrete behave in fire?
Concrete will react differently according to the temperature experienced. for normal strength concrete nothing will happen at less than 500c but after that it starts losing its strength and cracks will appear will fail from 5-6 hours and it may explode but exploding is less likely to happen but for high strength concrete at a very high 500c-700c it well explode suddenly
What is concrete mix design?
Its the process of selecting suitable ingredients of concrete and determining their relative amounts with the objective of producing a concrete of the required, strength, durability, and workability as economically as possible, is termed the concrete mix design.
Will strength of concrete mix will decrease if hot water is used?
As long as the water is liquid, the strength of the finished product will not be diminished by the water temperature.
How does concrete and steel complement each other in buildings?
That when the steel and concrete expand in say , a heat wave, the buildings walls dont get fall apart.
What is Most important component to determine the strength of a concrete mix?
The concrete mix should be a 5:1 Cement to water ratio. make sure you mix thoroughly when adding water. Look up "Concrete slump test"
What is the 21 days strength of concrete?
I think its 90% of ultimate strenght
What is the yield strength of plain concrete?
The yield strength in this case is equal to the ultimate tensile strength, which is about 0.9-3 MPa without any reinforcement.
What is ultimate 28 day concrete strength?
The strength of concrete on the 28th day is considered full strength with regard to the engineering calculations for its use. Concrete continues to get hard for 100 years or more, as long as it has water on it now and then. For a 6-sack concrete mix, its 28 day compressive strength should be at 4,000 psi or greater.
What has the author Shu-t'ien Li written?
Shu-t'ien Li has written: 'Optimum prestress, matrix analysis, and ultimate-strength design of prestressed concrete pier-, trestle-, and jetty bent piles' -- subject(s): Prestressed concrete construction, Prestressed concrete, Concrete piling 'Optimum prestress, analysis, and ultimatestrength design of prestressed concrete combined bearing and sheet piles' -- subject(s): Prestressed concrete construction, Prestressed concrete, Concrete piling 'Optimum prestress, analysis, and ultimate-strength design of prestressed concrete pile caissons' -- subject(s): Concrete piling, Prestressed concrete, Caissons
What is tensile strength of concrete?
The tensile strength of concrete is 10% of it's compressive strength.
Is the characteristic strength of a concrete the same as the compressive strength?
Yes, the characterisrtic strength of a concrete is the same as the compressive strength
How does the moisture affect the strength values of concrete?
the moisture of concrete is main strength for reinforced concrete structure
What is the relation between tensile strength and compression strength in concrete?
tensile strength is approximately between .08 to .15 of compression strength in concrete
What is high strength concrete?
Concrete with compressive strength more than 55 MPa is known as high strength concrete.It is used in the construction of bridges, dams. etc.,High strength concrete is produced by adding normal constituents of concrete with admixtures.
How do you convert brinell hardness number to ultimate tensile strength?
Ultimate Tensile Strength is the (BHN*500)
How does the fineness modulus of aggregates affect the strength of concrete?
how does the fineness modulus of aggregate affect the strength of concrete
How does fineness modulus of aggregates affect the strength of concrete?
how does the fineness modulus of aggregate affect the strength of concrete
