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High-strength lightweight concrete

A light-weight concrete and high-strength technology, applied in the field of concrete, can solve the problems of waste concrete recycling and other issues, and achieve the effects of reducing occupation and environmental pollution, good water absorption, good strength and firmness

Inactive Publication Date: 2020-09-11
泰州龙祥现代建筑发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Existing technical solutions fail to recycle waste concrete as renewable raw materials to improve resource utilization, thereby reducing land occupation and pollution by waste concrete and construction waste

Method used

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Experimental program
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Effect test

Embodiment 1

[0038] Embodiment 1: A kind of high-strength lightweight concrete, comprising the following components by weight: 500 parts of lightweight aggregate, 150 parts of recycled aggregate, 80 parts of natural aggregate, 400 parts of fine sand, 220 parts of cement, and 50 parts of fly ash , 40 parts of mineral powder, 0.5 parts of air-entraining agent, 2 parts of foaming agent, 1.5 parts of water-reducing agent, 165 parts of water, including reinforcing fiber with a volume percentage of 0.1%, and the particle size range of light aggregate is 15-22mm The ceramsite, the regenerated aggregate comprises the regenerated coarse aggregate and the regenerated fine aggregate with a weight ratio of 1:0.8; the preparation method of the regenerated aggregate comprises the following steps:

[0039] S1. Put the concrete waste into the jaw crusher for crushing;

[0040] S2. Sieve the crushed concrete particles and classify them once;

[0041] S3. Rinse and dry the screened waste concrete particles w...

Embodiment 2

[0047] Embodiment 2: A kind of high-strength lightweight concrete, comprising the following components in parts by weight: 550 parts of lightweight aggregate, 170 parts of recycled aggregate, 95 parts of natural aggregate, 500 parts of fine sand, 250 parts of cement, and 60 parts of fly ash , 45 parts of mineral powder, 0.8 parts of air-entraining agent, 2.4 parts of foaming agent, 1.8 parts of water-reducing agent, 170 parts of water, including reinforcing fiber with a volume percentage of 0.1%, and the particle size range of light aggregate is 15-22mm The ceramsite, the regenerated aggregate comprises the regenerated coarse aggregate and the regenerated fine aggregate with a weight ratio of 1:1.0; the preparation method of the regenerated aggregate comprises the following steps:

[0048] S1. Put the concrete waste into the jaw crusher for crushing;

[0049] S2. Sieve the crushed concrete particles and classify them once;

[0050] S3. Rinse and dry the screened waste concret...

Embodiment 3

[0056] Embodiment 3: A kind of high-strength lightweight concrete, comprising the following components by weight: 600 parts of lightweight aggregate, 200 parts of recycled aggregate, 110 parts of natural aggregate, 600 parts of fine sand, 280 parts of cement, and 65 parts of fly ash , 50 parts of mineral powder, 1.2 parts of air-entraining agent, 2.6 parts of foaming agent, 2.2 parts of water reducing agent, 175 parts of water, and 0.2% volume percentage of reinforcing fiber, and the particle size range of light aggregate is 15-22mm Ceramsite, regenerated aggregate comprises regenerated coarse aggregate and regenerated fine aggregate with a weight ratio of 1:1.2; the preparation method of regenerated aggregate comprises the following steps:

[0057] S1. Put the concrete waste into the jaw crusher for crushing;

[0058] S2. Sieve the crushed concrete particles and classify them once;

[0059] S3. Rinse and dry the screened waste concrete particles with water;

[0060] S4, car...

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Abstract

The invention relates to the technical field of concrete. The invention aims to provide high-strength lightweight concrete. Key points of the technical scheme are as follows: the high-strength lightweight concrete is prepared from 500 to 650 parts of a lightweight aggregate, 150 to 220 parts of a recycled aggregate, 80 to 120 parts of a natural aggregate, 400 to 650 parts of fine sand, 220 to 300parts of cement, 50 to 70 parts of fly ash, 40 to 60 parts of mineral powder, 0.5 to 1.5 parts of an air entraining agent, 2 to 3 parts of a foaming agent, 1.5 to 2.5 parts of a water reducing agent,165 to 180 parts of water and reinforced fibers with a volume percentage of 0.1-0.3%. The lightweight aggregate is ceramsite with the particle size ranging from 15 mm to 22 mm, and the recycled aggregate comprises a recycled coarse aggregate and a recycled fine aggregate according to the weight ratio of 1: (0.8-1.5). The high-strength lightweight concrete has the advantages of effective utilization of recycled concrete raw materials, high strength, energy saving and environmental protection.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a high-strength lightweight concrete. Background technique [0002] Lightweight concrete, also known as foam concrete and foam cement, is a new type of building energy-saving material that is waste-friendly, environmentally friendly, energy-saving, inexpensive and non-combustible. Lightweight concrete is formed by introducing air or nitrogen, carbon dioxide, oxygen and other gases into the concrete slurry according to the application needs through chemical or physical means, and after reasonable maintenance and molding, it is formed with a large number of small closed pores and has considerable strength. concrete products. Because the foam concrete contains a large number of closed small pores, it has good thermal insulation performance, and at the same time, a large number of small void structures also make the foam concrete have a good sound insulation effect. [0003] The C...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B38/10C04B20/10C04B20/02C04B111/40C04B111/27
CPCC04B28/00C04B20/1085C04B20/026C04B2111/40C04B2201/32C04B2111/27C04B2201/50C04B11/036C04B18/027C04B18/16C04B14/00C04B14/06C04B18/08C04B18/12C04B2103/304C04B2103/42C04B2103/302C04B14/44C04B16/0691C04B16/0633C04B14/48C04B38/106C04B20/1055C04B20/1033
Inventor 庞旭珍火亮庞俊高升吴国平刘永余李星庄万才朱开祥朱瑞丹王蔼文
Owner 泰州龙祥现代建筑发展有限公司
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