At what percentage of compressive strength of concrete do the tensile cracks move upward 33% 50% 85% 100% 90% 5%

Q: Why is reinforcing steel used in concrete? Discuss the typical properties ofreinforcing steel.

A: Reinforced concrete is used in concrete to make the structure very strong, and also to increase its…

Q: How does curing over time affect the splitting tensile strength of concrete?

A: Right after the water is added to the mix, Hydration starts taking place and it requires much…

Q: A three hinged circular arch has a span length of L and subtends at the centre of the circular curve…

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Q: Concrete shear walls can fail in the following manners except: flexural failure deformation failure…

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Q: Why is the flexural strength usually neglected in designing concrete structural members?

A: Before Coming into why Flexural strength is neglected in designing Concrete structural members…

Q: o Why the tensilę strengths of concrete are of the order of 10 and 15%of the compressive'strength.

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Q: Which of the following joints allows for slab shrinkage without forming any crack in the concrete?…

A: The boundary between concrete placements that are purposefully made to ease building is known as a…

Q: The square cross section of a reinforced concrete tie is 8 in. x 8 in., and it is reinforced with 8…

A: Here is the calculation of the area of steel and gross area:

Q: techniques used to study the concrete behavior at microscopic level.

A: I would like to start answering this problem from very basics, Micro-scopic level- Behaviour of…

Q: A normal-weight concrete has an average compressive strength of 20 MPa. What is the estimated…

A: Flexural strength of concrete is between 10-20% of compressive strength ie 2-4 N/mm2 or MPa

Q: A normal-weight concrete has an average compressive strength of 4500 psi. What is the estimated…

A: It is required to determine the estimated modulus of elasticity of the concrete. Here, fc’ is the…

Q: removed? Calculate the coefficient of creep for normal strength concrete years. Assume the loading…

A: Members have residual creep strain even after removal of creep load cause : The residual strain is a…

Q: A normal-weight concrete has an average compressive strength of 30 MPa. What is the estimated…

A: The expression for modulus of elasticity is given by, Here, f’c is the average compressive strength…

Q: What is the importance of flexural strength in concrete?

A: Flexural strength is defined as the measure of the tensile strength of the concrete. Actually it is…

Q: A normal-weight concrete has an average compressive strength of 20 MPa.What is the estimated flexure…

A: Given:- average compressive strength =20MPa To find:- estimated flexure strength

Q: The flexural tensile strength of M25 grade of concrete, in N/mm², as per IS:456-2000 is A 0.5 B 5 C…

A: Given- M25 concrete grade of concrete, IS 456:2000,

Q: Chapter 13 Question: What is the elasticity of concrete for a normal weight mix (unit weight equal…

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Q: Some types of cementitious materials can set while exposed to water. True or false?

A: Cementitious material:- One of the main components of the concrete mixture is cementitious…

Q: A 150mm x 300mm long cylindrical concrete specimen was tested for tensile strength. The sample…

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Q: compressive strength of concrete

A: To determine at which percentage the stress in beam changes changes from directly proportional to…

Q: If the value of the fc' of concrete is 30 MPa, and the actual stress of the concrete subjected to a…

A: Given that the value of fc' of concrete is 30 MPa.  The actual stress of the concrete subjected to a…

Q: What is the value of the Whitney stress block parameter, β1β1, for 6000 psi concrete?

A: To find :- Whitney stress blovk parameter B1 for 6000 psi concrete

Q: Correctly define which of the stress versus strain graphs represent the comparison of 8 ksi and 4…

A: Stress- Strain curve of any material shows the material deformation caused due to applied load.…

Q: Determine the cracking moment (KN/M) and compressive stress felt by concrete (MPa). Show your…

A: Solution- Given,Concrete strength (fc') = 27.5 MpaDL =25.14 KN/mLL=11.4 KN/m

Q: At what percent of compressive strength pf concrete do the tensile cracks move farther upward? 33%…

A: The theoretical compressive strength of concrete is eight times larger than its tensile strength.…

Q: What factors influence the creep of concrete? What are the types and grades of the steel…

A: Brief concept- Creep of concrete- It is defined as the deformation in the concrete due to sustained…

Q: Determine the cracking moment (Kn/m) and compressive stress felt by concrete (MPa) shoe your step by…

A: Concrete strength(fc)=2.75 Mpa Dead load(DL)=25.14 kN/m Live load(LL)=11.4 kN/m