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Reasons for concrete cube to have greater compressive strength as compared to cylinder is
- contact area of a standard cube mould with the upper platen in the testing machine is more which results in more confinement .
- more confinement resist against specimen expansion resulting in more compressive strength
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Why concrete named as high strength concrete?
Concretes from grade M-60 to M-80 are called as high strength concretes as per IS 456-2000
Why it is need to use high strength concrete in prestressed concrete?
to offer high resistance in tansion,shear and bond
Why in case of high strength concrete you are getting step snoop of curve after cracking of concrete?
gravitation is inversly proportional to weaight
How to make ultra high performance concrete?
silica fume and quartz powder is added to make the concrete more denser. fine aggregates fill the voids between coarse aggegates, cement fill the voids between fine aggregate, silica fume fills the voids between cement and quartz powder fills the voids in between silica fumes
Applications where tensile strength is the primary factor in material selection?
-Re-inforced cement concrete -High temperature services
What is C25 concrete?
C25 concrete is a concrete having compressive strength of 25MPa when tested at the 28th day after casting. The specimen can be cube(150x150x150) or cylindrical(125mm by 250mm high). The cube strength has 0.8 times that of cylindrical specimen due to shape factor.
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.
Why are bridges made of steel and concrete?
Steel is used for its high tensile strength and the concrete is used for its high compression strength.
Why concrete named as high strength concrete?
Concretes from grade M-60 to M-80 are called as high strength concretes as per IS 456-2000
Why it is need to use high strength concrete in prestressed concrete?
to offer high resistance in tansion,shear and bond
What has the author Dat Duthinh written?
Dat Duthinh has written: 'Shear strength of high-strength concrete walls and deep beams' -- subject(s): Shear (Mechanics), High strength concrete, Concrete beams 'Tensile strength of an interlocking composite connection' -- subject(s): Testing, Strength of materials, Evaluation, Polymeric composites, Composite construction
What has the author Roberto C Pinto written?
Roberto C. Pinto has written: 'Frost and scaling resistance of high-strength concrete' -- subject(s): Cold weather conditions, High strength concrete
Why in case of high strength concrete you are getting step snoop of curve after cracking of concrete?
gravitation is inversly proportional to weaight
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
Why does concrete mix with low water cement ratio resulted in hardened concrete having higher strength than those with high water cement ratio?
Why does concrete mix with low water cement ratio resulted in hardened concrete having higher strength than those with high water cement ratio?
What has the author Long T Phan written?
Long T. Phan has written: 'Experimental plan for testing the mechanical properties of high-strength concrete at elevated temperatures' -- subject(s): High strength concrete, Mechanical properties, Testing, Heating
How to make ultra high performance concrete?
silica fume and quartz powder is added to make the concrete more denser. fine aggregates fill the voids between coarse aggegates, cement fill the voids between fine aggregate, silica fume fills the voids between cement and quartz powder fills the voids in between silica fumes
