Physical Properties Of High Density Concrete

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Physical properties of high density concrete.

Test results indicate that high density concrete with densities ranging from 3400 5600 kg cu m and compressive strengths varying from 200 550 kg sq cm can be produced using steel punchings as coarse aggregate. 14 41 gpa 2 6 x 106 psi permeability. 3 5 mpa 400 700 psi tensile strength σ. The strength of this concrete measured on standard cylinders has been found 42 mpa at 28 days for a water cement.

The compressive strength is typically controlled with the ratio of water to cement when forming the concrete and tensile strength is increased by additives typically steel to create reinforced concrete. 1 x 10 10 cm sec. Concrete has relatively high compressive strength it doesn t crack under weight but significantly lower tensile strength it cracks when being pulled. High density concrete high density concrete is a concrete having a density in the range of 6000 to 6400 kg cu m.

The density of this concrete for a mix of 1 4 6 6 4 with water cement ratio of 0 58 has been found as 3700 kg m. High density concrete is also known as heavy weight concrete. Apart from the basic physical properties i e compressive strength density and absorption knowledge of thermal properties of such concrete is required to access its performance under service conditions. The concrete has a minimum 28 day compressive strength of 2500 psi 17 mpa an equilibrium density between 70 and 120 lb ft 1120 and 1920 kg m and consists entirely of lightweight aggregate or a combination of lightweight and normal density aggregate.

Density ρ. Following properties of high density concrete have been observed. High density concrete is used extensively in nuclear power plants for radiation shielding against biological hazards. 2240 2400 kg m3 140 150 lb ft3 compressive strength.