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Thermal-insulation loading recycled concrete

A technology for recycling concrete and concrete, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of high price, restrictions on promotion and application, difficult price of recycled concrete, etc. The effect of good distribution and improved resource recycling utilization

Active Publication Date: 2012-09-12
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there have been some researches on the performance of recycled concrete in China, its popularization and application are restricted, mainly because its price is higher than that of ordinary concrete, and it is also very difficult to simply pursue the reduction of the price of recycled concrete

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Insulation and load-bearing recycled concrete, the components of the concrete and their weight ratio (kg / m3) are as follows:

[0034] Composite lightweight bone admixture: cement: recycled fine aggregate: sand: recycled coarse aggregate: stone: ceramsite: fly ash: water: admixture=5:800:20:300:30:1400:50:10: 50:0.1;

[0035] The composite lightweight bone admixture is a mixture of vitrified microbeads and airgel, the weight ratio of vitrified microbeads and aerogel is 1:1, and the density of the mixture is (80-180) kg / m3;

[0036] Among the above additives: 80 parts of silica fume, 40 parts of air-entraining agent, 20 parts of foaming agent, 30 parts of water reducing agent, 15 parts of polypropylene fiber, and 150 parts of waste slag.

[0037] The production method is as follows:

[0038] In the first step, the composite lightweight bone admixture is subjected to hydrophobic treatment;

[0039] In the second step, the admixture and the composite lightweight bone adm...

Embodiment 2

[0043] Insulation and load-bearing recycled concrete, the components of the concrete and their weight ratio (kg / m3) are as follows:

[0044] Composite lightweight bone admixture: cement: recycled fine aggregate: sand: recycled coarse aggregate: stone: ceramsite: fly ash: water: admixture = 100: 500: 250: 200: 200: 900: 200: 200: 250:50;

[0045] The composite lightweight bone admixture is a mixture of vitrified microbeads and airgel, the weight ratio of vitrified microbeads and aerogel is 1:0.7, and the density of the mixture is (80-180) kg / m3;

[0046] Among the above additives: 10 parts of silica fume, 20 parts of air-entraining agent, 5 parts of foaming agent, 15 parts of water reducing agent, 1 part of polypropylene fiber, and 80 parts of waste slag.

[0047] The production method is as follows:

[0048] In the first step, the composite lightweight bone admixture is subjected to hydrophobic treatment;

[0049] In the second step, the admixture and the composite lightwei...

Embodiment 3

[0052] Insulation and load-bearing recycled concrete, the components of the concrete and their weight ratio (kg / m3) are as follows:

[0053] Composite lightweight bone admixture: cement: recycled fine aggregate: sand: recycled coarse aggregate: stone: ceramsite: fly ash: water: admixture = 250: 200: 500: 5: 600: 5: 800: 600: 500:200;

[0054] The composite lightweight bone admixture is a mixture of vitrified microbeads and airgel, the weight ratio of vitrified microbeads and aerogel is 1:1.5, and the density of the mixture is (80-180) kg / m3;

[0055] Among the above additives: 150 parts of silica fume, 5 parts of air-entraining agent, 30 parts of foaming agent, 3 parts of water reducing agent, 30 parts of polypropylene fiber, and 10 parts of waste slag.

[0056] The production method is as follows:

[0057] In the first step, the composite lightweight bone admixture is subjected to hydrophobic treatment;

[0058] In the second step, the admixture and the composite lightweig...

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Abstract

The invention relates to a concrete commonly used in building materials, and especially relates to a thermal-insulation loading recycled concrete. A technical problem to be solved is to provide a recycled concrete which is an integration of thermal insulation, loading, quake resisting, and energy saving and emission reduction. A technical scheme adopted is characterized in that a weight ratio (kg / m<3>) of a composite lightweight aggregate admixture: cement: recycled fine aggregate: sand: recycled coarse aggregate: cobblestone: ceramsite: coal ash: water: additives is (5-250):(200-800):(20-500):(5-800):(30-600):(5-1400):(50-800):(10-600):(50-500):(0.1-200); the composite lightweight aggregate admixture is a mixture of glazed hollow beads and an aerogel, and the weight part ratio of the glazed hollow beads to the aerogel is 1:(0.7-1.5); and the additives comprise the following components, by weight, 10-150 parts of silica fume, 4-40 parts of an air entraining agent, 5-30 parts of a foaming agent, 3-30 parts of a water reducing agent, 1-30 parts of a polypropylene fiber, and 10-150 parts of waste slag. The technical scheme is used for making the recycled concrete.

Description

technical field [0001] The invention relates to heat-retaining and load-bearing regenerated concrete, which relates to concrete commonly used in building materials, in particular to a heat-retaining and load-bearing regenerated concrete. Background technique [0002] Our country is in a period of rapid economic development. With the development of our country's economy, population growth, and urbanization of towns, the basic construction is also at a climax of development. The centralized planning of second-tier and lower cities has led to the demolition of a large number of existing buildings. The resulting disposal of construction waste also puts a huge pressure on the environment, among which waste concrete accounts for 30%-40% of construction waste; on the other hand, Daxing Construction has an increasing demand for sand and gravel aggregates , due to a large amount of mining, it has caused great damage to the natural environment, and the natural resources are gradually ...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B18/16C04B14/36C04B16/06C04B20/02
CPCY02W30/91
Inventor 李珠赵林
Owner TAIYUAN UNIV OF TECH
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