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Preparation method for impact resistant ecological concrete

An ecological concrete, impact-resistant technology, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as poor impact resistance, and achieve good impact resistance, good construction performance, and high strength Effect

Inactive Publication Date: 2009-01-14
CHINA BUILDING MATERIAL TEST & CERTIFICATION GRP XIAMEN HONGYE
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Problems solved by technology

[0004] Aiming at the deficiency of ordinary concrete with poor impact resistance, the invention discloses a preparation technology and method of rubber aggregate concrete with good impact resistance

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  • Preparation method for impact resistant ecological concrete
  • Preparation method for impact resistant ecological concrete

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Embodiment Construction

[0025] The mix ratio (the weight of various materials in every cubic meter of concrete, unit kg / m) as the benchmark ordinary concrete of contrast, the ordinary rubber aggregate concrete that is not processed by interface modifier and the impact-resistant rubber aggregate concrete of the present invention 3 ) and impact resistance are shown in Table 1 and Table 2. The cement is P.O42.5 ordinary Portland cement, the sand is medium sand with a fineness modulus of 2.8, the gravel is continuously graded crushed stone of 5-25mm, and the average particle size of the rubber aggregate is 2mm, 3mm and 5mm. The high-efficiency water reducer is a polycarboxylic acid-based high-efficiency water reducer. The specific implementation method is as described above.

[0026] The impact test method adopts the bending impact test method, and the size of the test pieces for the bending impact test is 100mm×100mm×400mm, with 6 test pieces in each group. The free fall hammer is a solid cylinder wit...

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Abstract

Disclosed is a preparation method of shock-proof ecological concrete, belonging to the concrete material field. Aiming at the defect of poor shock resistance of common concrete, the preparation method firstly adopts rubber and a cement stone matrix interface modifier to pre-treat rubber aggregates, then mixes and agitates materials such as cement, coarse and fine aggregates, rubber aggregates, water and admixture in a certain proportion evenly, and prepares the concrete after the curing for a certain period of time. The concrete has compositions per cubic meter, in proportion: cement: 350 to 500kg / m<3>; water: 150 to 250kg / m<3>; fine aggregates: 200 to 650kg / m<3>; coarse aggregates: 1000 to 1200kg / m<3>; high-efficient water-reducing agent: 0 to 8kg / m<3>; interface modifier: 1.8 to 6kg / m<3>; and rubber aggregates: 50 to 200kg / m<3>. Compared with the common concrete and common rubber aggregate concrete, the concrete in the invention has advantages of obviously improved shock resistance and excellent concrete workability, and can be widely used for various impact load-bearing structures such as foundation engineering as well as roadbeds and sleepers of trains, and has broad promotion and application prospect.

Description

technical field [0001] The invention belongs to the technical field of new concrete materials. In particular, it relates to a method for preparing concrete material mixed with surface-modified waste rubber tire particles. The impact resistance of this kind of concrete is significantly higher than that of ordinary concrete of the same strength and rubber aggregate concrete without surface modification, and the concrete has good working performance. Background technique [0002] The impact resistance of concrete is an important aspect to evaluate the quality of concrete dynamic properties. Vibration, shock and explosion-resistant structures, such as highway pavement, foundation engineering of buildings in high-seismic areas, roadbed sleepers of trains, etc., put forward higher requirements for the impact resistance of concrete. However, ordinary cement concrete is easy to crack during the application process, has low tensile strength and poor impact resistance, which often l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/22C04B24/24C04B24/28
CPCC04B2111/00017C04B28/04Y02W30/91C04B14/02C04B14/06C04B18/22C04B20/0076C04B20/0092C04B24/2623C04B24/42C04B40/0028C04B2103/302C04B24/2641
Inventor 李悦韩兆兴金彩云闫子颖王敏吴玉生
Owner CHINA BUILDING MATERIAL TEST & CERTIFICATION GRP XIAMEN HONGYE
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