Multi-phase combined lightweight aggregate concrete and preparation method thereof

A technology for lightweight aggregate concrete and raw materials, which is applied in ceramic products, other household appliances, sustainable waste treatment, etc. High density and other problems, to achieve the effect of light weight, good thermal insulation performance and good shock resistance

Active Publication Date: 2011-10-05
HEBEI INSTITUTE OF ARCHITECTURE AND CIVIL ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a multi-phase composite lightweight aggregate concrete and a preparation method thereof, to solve the problems of high cost of raw materials and high energy consumption in production of existing lightweight aggregate concrete; Concrete has high density, high thermal conductivity, and poor thermal insulation effect; it also solves the technical problem that the preparation method of ordinary lightweight aggregate concrete is easy to delaminate inside the concrete during mixing, which affects product performance.

Method used

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  • Multi-phase combined lightweight aggregate concrete and preparation method thereof
  • Multi-phase combined lightweight aggregate concrete and preparation method thereof
  • Multi-phase combined lightweight aggregate concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment one, this heterogeneous composite lightweight aggregate concrete, described its raw material ratio by weight is as follows:

[0051] 1 part of cement;

[0052] 0.43 parts of fly ash;

[0053] Pumice sand 2.028 parts;

[0054] Corn straw fiber 0.038 parts;

[0055] 0.007 parts of polystyrene particles;

[0056] 0.280 parts of rubber particles;

[0057] Admixture 0.015 parts;

[0058] Foaming agent 0.006 part;

[0059] 0.53 parts of water.

[0060] The pumice sand and corn stalk fibers are processed into thin-layer shell-coated pumice sand and thin-layer shell-coated straw fibers respectively, and the polystyrene particles and rubber particles are polystyrene particles and rubber particles that have been treated with an interface treatment agent. The treatment agent is prepared by diluting silane coupling agent with sodium silicate aqueous solution.

Embodiment 2

[0061] Embodiment two, this heterogeneous composite lightweight aggregate concrete, described its raw material proportioning by weight is as follows:

[0062] 1 part of cement;

[0063] 0.42 parts of fly ash;

[0064] Pumice sand 2.219 parts;

[0065] Corn straw fiber 0.043 part;

[0066] 0.006 parts of polystyrene particles;

[0067] 0.23 parts of rubber particles;

[0068] Admixture 0.012 parts;

[0069] Foaming agent 0.007 part;

[0070] 0.55 parts of water.

[0071] The pumice sand and corn stalk fibers are processed into thin-layer shell-coated pumice sand and thin-layer shell-coated straw fibers respectively, and the polystyrene particles and rubber particles are polystyrene particles and rubber particles that have been treated with an interface treatment agent. The treatment agent is prepared by diluting silane coupling agent with sodium silicate aqueous solution.

Embodiment 3

[0072] Embodiment three, this heterogeneous composite light aggregate concrete, described its raw material ratio by weight is as follows:

[0073] 1 part of cement;

[0074] 0.50 parts of fly ash;

[0075] 1.836 parts of pumice sand;

[0076] Corn straw fiber 0.028 parts;

[0077] 0.008 parts of polystyrene particles;

[0078] 0.33 parts of rubber particles;

[0079] Admixture 0.010 parts;

[0080] Foaming agent 0.005 parts;

[0081] 0.55 parts of water.

[0082]The pumice sand and corn stalk fibers are processed into a thin layer of shell-coated pumice sand and a thin layer of shell-coated straw fiber before use. Both the polystyrene particles and the rubber particles are polystyrene particles and rubber particles that have been treated with an interface treatment agent. The treating agent is prepared by diluting titanate coupling agent with sodium silicate aqueous solution.

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Abstract

The invention discloses multi-phase combined lightweight aggregate concrete and a preparation method thereof. The multi-phase combined lightweight aggregate concrete is prepared from the following raw materials in part by weight: 1 part of cement, 0.40 to 0.50 part of fly ash, 1.836 to 2.219 parts of pumice sand, 0.028 to 0.043 part of corn straw fibers, 0.006 to 0.008 part of polyphenyl particles, 0.23 to 0.33 parts of rubber particles, 0.010 to 0.015 part of additive, 0.005 to 0.007 part of foaming agent, and 0.50 to 0.55 parts of water. The preparation method comprises the following steps:1, preparing thin-coating pumice sand and thin-coating straw fibers; 2, performing interference treatment of polyphenyl particles and rubber particles; 3, uniformly stirring the cement, fly ash, water, additive and thin-coating pumice sand; and 4, adding the polyphenyl particles, rubber particles and thin-coating straw fibers in turn, and continuing to stir. When the method is used, the mechanical performance of the lightweight aggregate concrete can be improved effectively, the thermal-insulation and heat-preservation performance is enhanced, and production cost is lowered.

Description

technical field [0001] The invention relates to a lightweight aggregate concrete and a preparation method thereof. Background technique [0002] Light aggregate concrete is light concrete made of light aggregate with a bulk density not greater than 1900 kg / m, also known as porous aggregate light concrete. Because light aggregate concrete contains a large number of closed pores, it has light weight, good thermal insulation performance, and convenient construction. Compared with ordinary concrete of the same grade, it can reduce its own weight by more than 20-30%. Existing lightweight aggregate concrete is usually prepared into foam by mechanical means, and then the foam is added to the slurry composed of siliceous materials, calcium materials, water and various admixtures, etc. After mixing, stirring, It is formed by pouring and curing. At present, ceramsite, slag, pumice, expanded perlite, polystyrene foam plastic particles, etc. are mainly used as light raw materials. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B14/06C04B38/02C04B18/22C04B16/08C04B18/24C04B28/00
CPCY02W30/91
Inventor 麻建锁白润山孙婧卜娜蕊
Owner HEBEI INSTITUTE OF ARCHITECTURE AND CIVIL ENGINEERING
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