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Concrete and preparation method thereof

A concrete and mixture technology, applied in the field of concrete, to achieve good mechanical properties, improve cold resistance, and not easily damaged

Active Publication Date: 2017-06-13
北京城建九混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the deficiencies in the prior art, the first object of the present invention is to provide a concrete, which solves the problem that the concrete is difficult to maintain good stability and durability in an extremely cold environment, and is easy to cause cracks, and has better Advantages of cold resistance, stability and durability, and less prone to cracks

Method used

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  • Concrete and preparation method thereof
  • Concrete and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0066] Embodiment 1: Concrete, components and corresponding parts by weight thereof are shown in Table 1, and are prepared through the following steps:

[0067] S1, uniformly mixing cement, river sand with a fineness modulus of 1.8-2.2, and gravel with a size of 20-25 mm to obtain the first mixture;

[0068] S2, the fiber mixture composed of glass fiber, polypropylene fiber and steel fiber with a ratio of parts by weight of 2.5:1.5:1, and lignin and silicon powder with a ratio of parts by weight of 2-3:3-3.5:1 , quartz sand, and limestone to form a second mixture, which is uniformly mixed with the first mixture obtained in S1 to form a third mixture, wherein the aspect ratio of the fiber mixture is 25-60, and the particle size of the filler is 200-250 mesh; S3, the adhesive composed of epoxy resin, unsaturated polyester resin, SBS modified asphalt with a ratio of parts by weight of 6:2.5:1, and a ratio of parts by weight of 1.52:1 : 1.65 SY-T composite fiber anti-cracking age...

Embodiment 2-3

[0069] Example 2-3: Concrete, the difference from Example 1 is that the components and their corresponding parts by weight are shown in Table 1.

[0070] Components and their corresponding parts by weight in Table 1 Embodiment 1-3

[0071]

Embodiment 4

[0072] Embodiment 4: concrete, the difference from embodiment 1 is that the fiber mixture is a mixture of glass fiber and polypropylene fiber.

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Abstract

The invention discloses concrete and a preparation method thereof. The concrete is prepared from components in parts by weight as follows: 103-133 parts of cement, 20-36 parts of river sand, 21-31 parts of gravel, 45-60 parts of water, 12-23 parts of a fiber mixture, 21-33 parts of lignin, 20-36 parts of an adhesive, 12-18 parts f a concrete expansive material and 35-51 parts of padding, wherein the fiber mixture comprises two or more of glass fibers, polypropylene fibers and steel fibers; the adhesive comprises at least two of epoxy resin, unsaturated polyester resin and SBS (styrene butadiene styrene) modified asphalt; the padding comprises silica powder, quartz sand and limestone; the concrete expansive material comprises at least two of an SY-T complex fiber anti-crack agent, an SY-K expansive fiber anti-cracking waterproof agent and a CAL fiber compound type four-element expanding agent. The concrete has the advantages of better cold resistance, stability and durability and low probability of cracking.

Description

technical field [0001] The invention relates to the technical field of concrete, more specifically, it relates to a concrete and a preparation method thereof. Background technique [0002] Concrete is an engineering composite material in which the aggregate is cemented into a whole by a cementitious material. The cementitious material is usually cement, and the aggregate is sand and stone, which are mixed with water in a certain proportion and obtained by stirring. As a very important building material, it is widely used in civil engineering. [0003] In the prior art, in the extremely cold environment in winter in Northeast China, it is easy to cause severe shrinkage of concrete and cause cracks, resulting in poor stability and durability. Therefore, a concrete with better cold resistance, stability and durability, and less prone to cracks has certain commercial value. Contents of the invention [0004] Aiming at the deficiencies in the prior art, the first object of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
CPCC04B28/00C04B2201/50C04B14/06C04B14/02C04B14/42C04B16/0633C04B14/48C04B14/28C04B24/281C04B24/24C04B24/36C04B24/283C04B2103/0068
Inventor 卫晓勇马洪利朱斌王鑫任铁钺陈志朋
Owner 北京城建九混凝土有限公司
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