Reactive powder concrete containing waste steel fibers, and a preparation method thereof

A technology of active powder and steel fiber, which is applied to the field of active powder concrete containing waste steel fiber and its preparation, and achieves the effects of reducing production cost, reducing resource utilization, good economic benefits and environmental benefits
CN107651918AInactive Publication Date: 2018-02-02ๅˆ˜ๅบ”่™Ž +2
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
ๅˆ˜ๅบ”่™Ž
Publication Date
2018-02-02
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention discloses a reactive powder concrete containing waste steel fibers, and a preparation method thereof. The reactive powder concrete comprises 1100-1300 kg / m<3> of sands, 400-850 kg / m<3> of cement, 50-200 kg / m<3> of silica fume, 50-200 kg / m<3> of fly ash, 0-200 kg / m<3> of limestone powder, 100-205 kg / m<3> of the waste steel fibers, 35-48 kg / m<3> of a water reducer and 135-155 kg / m<3> of water. The preparation method comprises the following steps: adding above raw materials into a stirrer, and stirring and mixing the raw materials to obtain a reactive powder concrete material; pouring the material into a test piece die, vibrating the test piece die, trowelling the material, performing standing curing, and releasing the molded material from the die; and performing curing after the die release to produce the reactive powder concrete containing waste steel fibers. The waste steel fibers separated in waste tires are used to replace expensive traditional copper-plated steel fibers in order to prepare the reactive powder concrete containing waste tire steel fibers, having same performances to copper-plated steel fiber reactive powder concrete, so the reactive powder concrete containing waste steel fibers and the preparation method have good economic and environmental benefits.
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Description

technical field

[0001] The invention belongs to a low-cost environment-friendly new building material-concrete and its preparation, and relates to an active powder concrete containing scrap steel fibers and a preparation method thereof. It is especially suitable for the preparation of low-cost reactive powder concrete using steel fibers separated from waste tires. Background technique

[0002] Reactive Powder Concrete (RPC) is a new type of building material with excellent mechanical properties and durability after high-strength and high-performance concrete. However, at present, RPC production mainly still has the problems of complicated process, high cost and large shrinkage. The large amount of RPC cementitious materials and the use of a large amount of relatively expensive raw materials such as quartz sand, silica fume, and steel fibers are one of the main reasons for the high production cost of RPC.

[0003] At present, the fibers used in RPC mainly include copper-coa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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