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Modified rubber particle lightweight ultra-high performance concrete and preparation method thereof

A modified rubber, ultra-high-performance technology, applied in the field of building materials, can solve the problems of restricting the development and application of prefabricated assembly construction technology, the size and self-weight of bridge prefabricated components, transportation and hoisting construction difficulties, etc., to avoid alkali aggregates. Reaction problems, life extension, effect of improving hydrophilic properties

Inactive Publication Date: 2020-05-19
CHINA STATE CONSTR READY MIXED CONCRETE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the high density and low strength of the ordinary high-performance concrete currently used, the size and weight of the prefabricated components of the bridge make its transportation and hoisting difficult, which limits the development and application of prefabricated construction technology

Method used

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  • Modified rubber particle lightweight ultra-high performance concrete and preparation method thereof
  • Modified rubber particle lightweight ultra-high performance concrete and preparation method thereof

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Embodiment 1～5

[0045] A modified rubber particle lightweight ultra-high performance concrete, the preparation method of which comprises the following steps:

[0046] 1) take each raw material according to the proportioning described in Table 1;

[0047] 2) Soak the pottery sand in water until it is saturated with water to obtain pre-wet pottery sand, add the pre-wet pottery sand, cement, silica fume and rubber particles into the concrete mixer for pre-mixing for 2 minutes, add fly ash microbeads and water retention and shrinkage reduction internal curing Add the agent and continue to dry mix for 1 minute, then pour water and water reducing agent and stir for 3 minutes, pour water-based epoxy resin and stir for 1 minute, then evenly add copper-plated steel fiber and stir for 3 minutes; After the permeable film is cured, the formwork is removed, and the curing is carried out according to the standard curing regulations for concrete in GB / T50081-2019 "Standards for Test Methods of Physical and ...

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Abstract

The invention discloses modified rubber particle lightweight ultra-high performance concrete and a preparation method thereof. The concrete is prepared from cement, fly ash microbeads, silica fume, pottery sand, rubber particles, copper-plated steel fibers, waterborne epoxy resin, a water-retaining shrinkage-reducing internal curing agent, a water reducing agent and water as main raw materials, wherein the rubber particles are prepared by crushing waste tires and then modifying the crushed waste tires. The modified rubber particle lightweight ultra-high performance concrete has the advantagesof light weight, high strength, high impact toughness, abrasion resistance and good volume stability, and has practical application value.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a modified rubber particle lightweight ultra-high performance concrete and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of the national economy, the increase of urban population and the continuous expansion of urban construction scale, the problem of urban traffic congestion has become more and more serious. The construction of urban viaducts and overpasses is an effective measure to solve urban traffic congestion. At present, in the construction of urban viaducts and overpasses in my country, most of them adopt the traditional concrete pouring construction method on site, which has a long construction period (3-5 years), great environmental pollution, land occupation and encirclement, and traffic congestion is very serious. It is the development trend of urban bridge construction technology to change the tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/40
CPCC04B28/04C04B2201/50C04B2201/20C04B2111/40C04B18/027C04B18/146C04B18/08C04B18/22C04B14/48C04B24/281C04B2103/302C04B24/023C04B24/04C04B18/248C04B24/26C04B24/124C04B24/045C04B14/26C04B14/34C04B22/126C04B22/143
Inventor 谯理格王军赵日煦杨文吴雄黄汉洋
Owner CHINA STATE CONSTR READY MIXED CONCRETE CO LTD
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