Low-shrinkage, low-viscosity and ultrahigh strength concrete
An ultra-high-strength concrete and low-viscosity technology, applied in the field of building materials, can solve the problems of difficult concrete technology, insufficient number of powder storage tanks, and separation from practical applications, etc., to achieve improved performance and mechanical properties, good work performance, and obvious increase effect Effect
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Embodiment 1
[0020] A low-shrinkage, low-viscosity ultra-high-strength concrete, one cubic meter (m 3 ) Concrete components are as follows: cement 250kg, microbeads 180kg, mineral powder 120kg, machine-made sand 820kg, basalt gravel 985kg, water reducing agent 9.0kg, water 125kg. After the materials are ready, mix the above components and stir them with a forced mixer for 1.5mim to get the low-shrinkage low-viscosity ultra-high-strength concrete described in the present invention. The concrete has good workability, low viscosity, and no segregation or bleeding. Phenomenon. The performance, hardening performance and shrinkage of the concrete mixture are shown in Table 1.
Embodiment 2
[0022] A low-shrinkage, low-viscosity ultra-high-strength concrete, one cubic meter (m 3 ) Concrete components are as follows: cement 280kg, microbeads 150kg, mineral powder 110kg, machine-made sand 840kg, basalt gravel 1000kg, water reducing agent 8.7kg, water 120kg. After the materials are fully prepared, mix the above components and stir them with a forced mixer for 1.5 minutes to obtain the low-shrinkage, low-viscosity, ultra-high-strength concrete described in the present invention. The concrete has good workability, low viscosity, and no segregation or bleeding. Phenomenon. The performance, hardening performance and shrinkage of the concrete mixture are shown in Table 1.
Embodiment 3
[0024] A low-shrinkage, low-viscosity ultra-high-strength concrete, one cubic meter (m 3 ) Concrete components are as follows: cement 300kg, microbeads 120kg, mineral powder 120kg, machine-made sand 860kg, limestone gravel 970kg, water reducing agent 10.2kg, water 120kg. After the materials are fully prepared, mix the above components and stir them with a forced mixer for 2.0 minutes to obtain the low-shrinkage, low-viscosity, ultra-high-strength concrete described in the present invention. The concrete has good workability, low viscosity, and no segregation or bleeding. Phenomenon. The performance, hardening performance and shrinkage of the concrete mixture are shown in Table 1.
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