C30 tailing sand concrete and preparation method thereof

A technology of tailings sand and concrete, which is applied in the field of building materials, can solve the problems of large concrete slump loss, inability to meet underwater construction, and easy dispersion of concrete, so as to achieve difficult dispersion, increase hydrophobic effect, improve workability and resistance The effect of compressive strength
CN110128075AInactive Publication Date: 2019-08-16青岛中建富兴商砼有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
青岛中建富兴商砼有限公司
Publication Date
2019-08-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a C30 tailing sand concrete and a preparation method thereof. The C30 tailing sand concrete includes cement, sands, tailings sands, broken stones, water, fly ash, slag powder and an admixture; the tailing sands have a fineness modulus of 2.1-2.3 and a mud content of below 5%; the admixture is prepared by mixing a water reducer, a flocculant, a reinforcing component and modified bentonite according to a mass ratio of 1:(0.8-1.2):(4.5-5.5):(0.04-0.06); and the reinforcing component is prepared by mixing triethanolamine, polydimethylsiloxane and modified coal gangue powderaccording to a mass ratio of 1:(0.4-0.6):(1.2-1.5). The C30 tailing sand concrete of the invention has the advantages of good workability, small slump loss, and low dispersibility during underwater construction.
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Description

technical field

[0001] The invention relates to the technical field of building materials, in particular to a C30 tailings sand concrete and a preparation method thereof. Background technique

[0002] With the continuous heating up of the real estate industry and the extensive use of concrete in the construction industry, the demand for river sand resources is increasing, resulting in a large reduction in my country's sand resources, resulting in a substantial increase in the current concrete production cost, resulting in Unfair competition has brought difficulty to the quality control of the construction industry. Tailings are the waste after mineral processing and are the main component of industrial solid waste. A large amount of tailings sand not only occupies land, but also pollutes the environment with dust. At present, the comprehensive utilization rate of tailings in my country is only 7%. Therefore, tailings The comprehensive recycling of mines has been widely concer...

Claims

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