EPS (Expandable Polystyrene) light aggregate concrete thermal insulation hollow block and construction method thereof

A technology of lightweight aggregate concrete and thermal insulation masonry, which is applied in thermal insulation, building components, climate change adaptation and other directions to achieve the effects of saving energy, eliminating environmental pollution and improving quality

Inactive Publication Date: 2012-09-19
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

EPS light aggregate concrete thermal insulation formwork solves the weight problem and thermal insulation performance problem when the brick-concrete structure is used as the wall, and because of the reuse of a large amount of fly ash and EPS, it relieves the environmental pressure and plays a very good role in eliminating environmental pollution. the role of

Method used

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  • EPS (Expandable Polystyrene) light aggregate concrete thermal insulation hollow block and construction method thereof
  • EPS (Expandable Polystyrene) light aggregate concrete thermal insulation hollow block and construction method thereof
  • EPS (Expandable Polystyrene) light aggregate concrete thermal insulation hollow block and construction method thereof

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preparation example Construction

[0058] The preparation process of EPS lightweight aggregate concrete insulation formwork can be divided into three steps: mixing process, forming process and curing process. The mixing process is to first mix cement, fly ash, silica fume, perlite and some water into a low water-cement ratio clean slurry, then mix it with EPS particles, and finally add the remaining water and mix well. Since the density of EPS particles is much smaller than that of cement mortar, serious delamination will occur when the usual vibration molding process is used; resulting in uneven quality of EPS lightweight aggregate concrete, which greatly reduces its performance. In order to overcome this defect, a pressurized vibration molding process with a low water-cement ratio should be used. When vibrating, a flat plate is used to cover the mold, and a slight pressure is applied to make the plate and the mold vibrate at the same time. During the vibration process, the floating EPS particles are limited b...

Embodiment 1

[0066] The EPS light aggregate concrete raw material ratio that is used to prepare embodiment 1 thermal insulation formwork is as shown in table 2:

[0067] Table 2 EPS light aggregate concrete raw material mix ratio (per cubic meter)

[0068]

[0069] The water reducer is UNF-5 type water reducer, the particle size of silica fume is 0.1μm-0.2μm, and the density is 2.0-2.4g / cm 3 , bulk density 200-350kg / m 3 , specific surface area 15000-25000m 2 / kg; the river sand is medium sand, the sand rate is 20-25% by volume, and the bulk density is 1225-1325kg / m 3 , the water absorption rate is 0.95-1.05%; the bulk density of EPS particles is 10-20kg / m 3 ; Perlite is expanded perlite.

[0070] The preparation method of EPS light aggregate concrete formwork is as follows:

[0071] Stir according to the ratio of raw materials listed in Table 2:

[0072] First, mix cement, fly ash, silica fume, perlite, water reducer, river sand and 20%-30% water into a low water-cement ratio clea...

Embodiment 2

[0087] The EPS light aggregate concrete raw material ratio that is used to prepare embodiment 2 thermal insulation formwork is as shown in table 3:

[0088] Table 3 EPS light aggregate concrete raw material mix ratio (per cubic meter)

[0089]

[0090] The water reducer is UNF-5 type water reducer, the particle size of silica fume is 0.1μm-0.2μm, and the density is 2.0-2.4g / cm 3 , bulk density 200-350kg / m 3 , specific surface area 15000-25000m 2 / kg; the river sand is medium sand, the sand rate is 20-25% by volume, and the bulk density is 1225-1325kg / m 3 , the water absorption rate is 0.95-1.05%; the bulk density of EPS particles is 10-20kg / m 3 ; Perlite is expanded perlite.

[0091] The preparation method and construction method of building mold are the same as embodiment 1.

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Abstract

The invention provides an EPS (Expandable Polystyrene) light aggregate concrete thermal insulation hollow block and a construction method thereof, belonging to the technical of a concrete building material. The hollow block is prepared by using waste EPS (Expandable Polystyrene) particles as aggregates in concrete, the cement as a cementing material and adding pulverized fuel ash, silica fume, polymer emulsion and water. The EPS light aggregate concrete thermal insulation hollow block solves the problems of weight and thermal insulation property when a brick-concrete structure is used as a wall; and due to the recycling of lots of pulverized fuel ash and EPS, the environmental stress is eased, and the EPS light aggregate concrete thermal insulation hollow block has very effect on the elimination of environmental pollution. The hollow block provided by the invention has the characteristics of light weight, excellent thermal insulation property, simple construction method and green environmental protection.

Description

technical field [0001] The invention belongs to the field of concrete building materials, and in particular relates to an EPS light aggregate concrete thermal insulation formwork and a construction method thereof. Background technique [0002] Over the years, a large number of civil buildings have been dominated by brick-concrete structures. The brick-concrete structure uses a huge amount of bricks, which consumes a lot of soil for farming and consumes a lot of energy in the process of firing clay bricks, which has a negative impact on the environment. adverse effects. In addition, solid clay bricks have poor thermal insulation performance, which greatly increases the annual heating energy consumption. Therefore, the brick-concrete structure is difficult to meet the requirements of the growing building functions. [0003] EPS lightweight aggregate concrete insulation formwork is made by using waste polystyrene particles as thermal materials in concrete, sand as aggregate, ...

Claims

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Application Information

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IPC IPC(8): C04B28/00E04C1/00E04B1/78
CPCY02A30/244
Inventor 张雪松
Owner CHINA ELECTRIC POWER RES INST
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