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A fully recycled recycled FRP reinforced concrete and its preparation method

A technology for reinforcing concrete and glass fiber reinforced plastic, which is applied in the field of concrete materials, can solve the problems of low utilization rate, limited utilization, and shortage of fiberglass fiber reinforced plastic waste resources, and achieves the effect of improving the degree of compaction, reducing the cost, and overcoming the excessive decrease of concrete strength.

Active Publication Date: 2020-07-28
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The concrete solves the problems of the shortage of sand and gravel resources and the limited resources of FRP waste and low utilization rate, which is conducive to promoting the practical engineering application of FRP solid waste in building materials

Method used

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  • A fully recycled recycled FRP reinforced concrete and its preparation method

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preparation example Construction

[0047] The preparation method of the above-mentioned fully recycled recycled FRP reinforced concrete, the preparation method comprises the following steps:

[0048] (1) In terms of parts by weight, the above raw materials are divided into four groups, the first group is 2.1-4.9 parts of recycled glass fiber reinforced plastic and 3-3.09 parts of water, the second group is 47.34-57.86 parts of coarse aggregate, ordinary Portland cement 14.4-17.6 parts, 2.7-3.3 parts of fly ash, 0.9-1.1 parts of silica fume, 31.6-36.5 parts of fine aggregate, the third group is 1.35-1.85 parts of water reducing agent and 3-3.09 parts of water, the fourth group is 0.09-0.11 parts of defoamer and 3-3.09 parts of water;

[0049] (2) Put 2.1-4.9 parts of regenerated glass fiber reinforced plastics and 3-3.09 parts of water in the first group into an ultrasonic cleaning machine for pretreatment for 30 minutes.

[0050] (3) For the second group, 47.34-57.86 parts of coarse aggregate, 14.4-17.6 parts ...

Embodiment 1

[0054] In this embodiment, a kind of fully recycled recycled FRP reinforced concrete, in parts by weight, the composition and content of the concrete are respectively:

[0055] P.O 42.5 Ordinary Portland cement 14.9 parts;

[0056] 2.8 parts of fly ash;

[0057] 0.95 parts of silica fume;

[0058] 32.1 parts of fine aggregate;

[0059] Coarse aggregate 48.35 parts;

[0060] 2.1 parts of recycled fiberglass;

[0061] 0.095 parts of defoamer;

[0062] 1.39 parts of water reducing agent;

[0063] 9.06 parts of water.

[0064] The specific surface area of ​​P.O 42.5 ordinary Portland cement is 3.41m 2 / g, the density is 3.15g / cm 3 , the standard consistency water consumption is 26.8%, the initial setting time is 50min, the final setting time is 350min, the calcium oxide content is 55.1%, the silicon dioxide content is 8.59%, the aluminum oxide content is 9.92%, and the 3-day flexural strength is 4MPa, 3-day compressive strength is 18MPa, 28-day flexural strength is 8MPa, ...

Embodiment 2

[0080] In this embodiment, a kind of fully recycled recycled FRP reinforced concrete, in parts by weight, the composition and content of the concrete are respectively:

[0081] Ordinary Portland cement 15.6 parts;

[0082] 2.8 parts of fly ash;

[0083] 0.97 parts of silica fume;

[0084] 33.4 parts of fine aggregate;

[0085] Coarse aggregate 49.6 parts;

[0086] 3.7 parts of recycled fiberglass;

[0087] 0.1 part of defoamer;

[0088] 1.49 parts of water reducing agent;

[0089] 9.18 parts of water.

[0090] The selection of the material species in this implementation is the same as in Example 1.

[0091] The preparation method of the fully recycled recycled FRP reinforced concrete in this embodiment is:

[0092] (1) In parts by weight, the above raw materials are divided into four groups, the first group is 3.7 parts of recycled FRP and 3.06 parts of water, the second group is 49.6 parts of coarse aggregate, 15.6 parts of ordinary portland cement, fly ash 2.8 parts...

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Abstract

The invention relates to fully recycled regenerated glass fiber reinforced plastic reinforced concrete and a preparation method thereof, wherein the concrete comprises the components in parts by weight: 14.4 to 17.6 parts of ordinary Portland cement, 2.7 to 3.3 parts of fly ash, 0.9 to 1.1 parts of silica fume, 31.6 to 36.5 parts of a fine aggregate, 47.34 to 57.86 parts of a coarse aggregate, 2.1to 4.9 parts of regenerated glass fiber reinforced plastic, 1.35 to 1.85 parts of a water reducing agent, and 9 to 9.27 parts of water. The regenerated glass fiber reinforced plastic comprises regenerated fibers and glass fiber reinforced plastic powder, the content of the glass fiber reinforced plastic powder is not more than 20%, the length of the regenerated fibers is not larger than 10 mm, and the particle size of the glass fiber reinforced plastic powder is not more than 1 mm. The concrete realizes full recycling of the regenerated glass fiber reinforced plastic, has high working performance, meets the pumping requirement, and has good ductility while the strength meets the standard requirement. The concrete solves the problems of shortage of sandstone material resources, limited glass fiber reinforced plastic waste recycling way and low utilization rate, and is beneficial to promoting the practical engineering application of glass fiber reinforced plastic solid wastes in building materials.

Description

technical field [0001] The invention relates to the comprehensive utilization of resources of industrial solid waste and the field of concrete materials, in particular to a fully recovered and recycled FRP reinforced concrete and a preparation method thereof. Background technique [0002] my country's FRP industry has a large scale and rapid development, resulting in a huge amount of recycled waste FRP, which seriously affects the environment and restricts the development of enterprises. Hebei Province is an important FRP production province in my country. There are more than 100 FRP products enterprises in Jizhou District of Hengshui City alone. Hebei Province produces up to 160,000 tons of leftover waste and recycled products every year. FRP materials have high strength, many components, and corrosion resistance. It is very difficult to recycle them. The traditional landfill and incineration treatment method can easily cause water, soil and air pollution, and has been forc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B18/20
CPCC04B28/04C04B18/08C04B18/146C04B14/068C04B14/048C04B18/20C04B2103/302C04B2103/50Y02W30/91
Inventor 马国伟张默王里周博宇
Owner HEBEI UNIV OF TECH
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