A kind of C80 ultra-high pumping concrete and its preparation method

An ultra-high pumping and concrete technology, which is applied in the field of concrete, can solve the problems of low shear strength and reduce the fluidity of concrete, and achieve the effects of enhancing work performance, improving workability, and improving pumpability
CN111454033BActive Publication Date: 2022-05-27陕西宏基混凝土构件有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
陕西宏基混凝土构件有限责任公司
Publication Date
2022-05-27

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Abstract

The invention discloses a C80 ultra-high pumping concrete and a preparation method thereof, comprising the following raw materials in parts by weight: 270-310 parts of cement; 690-720 parts of sand; 950-990 parts of gravel; 240-260 parts 8.5-10.5 parts of polycarboxylate superplasticizer; 25-56 parts of graphite powder; 10-20 parts of ultra-fine coal gangue powder; 0.0145-0.145 parts of air-entraining agent; 2.4-2.6 parts part of activator; and 135-147 parts of water. The preparation method is as follows: taking cement, sand, crushed stone, fly ash, zeolite powder, graphite powder, mirabilite, slaked lime and ultra-fine coal gangue powder in corresponding parts by weight, stirring and mixing them evenly to obtain the first mixture; Mix water, water reducing agent and air-entraining agent evenly, add to the first mixture, and stir evenly to obtain C80 ultra-high pumpable concrete. The C80 ultra-high pumping concrete of the present invention has the advantages of good fluidity and easy pumping while ensuring strength.
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Description

technical field

[0001] The invention relates to the field of concrete, in particular to a C80 ultra-high pumping concrete and a preparation method thereof. Background technique

[0002] The ultra-high pumping concrete is transported to the specified height of the building at one time through the pumping equipment. Therefore, the concrete must have good fluidity, high cohesion, water retention and resistance to segregation and bleeding. C80 concrete refers to compression resistance Concrete with a strength between 80MPa and 85MPa is a kind of high-strength concrete. As a new building material, high-strength concrete has the advantages of high compressive strength, strong deformation resistance, high density and low porosity. It is widely used in high-rise building structures, long-span bridge structures and some special structures.

[0003] The Chinese invention patent application publication number CN110183161A discloses a high-strength concrete mixture, which is made of ra...

Claims

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