Premixing environmental protection energy-saving concrete and preparation method thereof

An energy-saving concrete technology, applied in the field of concrete materials, can solve the problems of slow pace of recycling and utilization rate of less than 5%, and achieve the effect of reducing mining volume, saving cement consumption, reducing energy consumption and resource consumption

Inactive Publication Date: 2008-07-09
TONGJI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, my country's current construction waste recycling and recycling pace is slow, and the comprehensive high-efficiency utilization rate is still less than 5%.
The mix ratio design method of ordinary concrete is no longer applicable to ready-mixed environment-friendly and energy-saving concrete

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The proportion of each component of concrete is as follows:

[0035] Cement: 223kg (42.5 Portland cement)

[0036] Water: 192kg

[0037] Fly ash: 65kg (according to the current national standard "Fly Ash Used in Cement and Concrete" (GB1596-2005) is Class C Class II)

[0038] Mineral powder: 65 kg (according to the current national standard "Granulated Blast Furnace Slag Powder Used in Cement and Concrete" (GB / T 18046-2000) is S95 grade).

[0039] Yellow sand: 785kg (medium sand)

[0040] Natural stone: 0kg

[0041] Regenerated coarse aggregate: 924kg (particle size 5-25mm, meeting claim 3)

[0042] Admixture: 2.13kg (wood-calcium ordinary water reducer, meeting the requirements of "Concrete Pumping Agent" (JC473-2001)) according to the above ratio of materials and in accordance with the "Standards for Test Methods of Mechanical Properties of Ordinary Concrete" (GB / T50081 -2002) and "Test Method for Long-term Performance and Durability of Ordinary Concrete" (GBJ82-...

Embodiment 2

[0049] The proportion of each component of concrete is as follows:

[0050] Cement: 223kg (42.5 Portland cement)

[0051] Water: 192kg

[0052] Fly ash: 65kg (according to the current national standard "Fly Ash Used in Cement and Concrete" (GB1596-2005) is Class C Class II)

[0053] Mineral powder: 65kg (according to the current national standard "Granulated Blast Furnace Slag Powder Used in Cement and Concrete" (GB / T 18046-2000) is S95 grade).

[0054] Yellow sand: 785 kg (medium sand)

[0055] Natural stones: 271kg (particle size 5-25mm)

[0056] Regenerated coarse aggregate: 631kg (particle size 5-25mm, meeting claim 3)

[0057] Admixture: 1.76kg (wood-calcium-based common water reducer, meeting the requirements of "Concrete Pumping Agent" (JC473-2001))

[0058] The materials were prepared according to the proportions mentioned above and their properties were tested according to the "Standards for Test Methods of Mechanical Properties of Ordinary Concrete" (GB / T50081-2...

Embodiment 3

[0065] The proportion of each component of concrete is as follows:

[0066] Cement: 200kg (42.5 Portland cement)

[0067] Water: 192kg

[0068] Fly ash: 65kg (according to the current national standard "Fly Ash Used in Cement and Concrete" (GB1596-2005) is Class C Class II)

[0069] Mineral powder: 88kg (according to the current national standard "Granulated Blast Furnace Slag Powder Used in Cement and Concrete" (GB / T 18046-2000) is S95 grade).

[0070] Yellow sand: 785kg (medium sand)

[0071] Natural stones: 354kg (particle size 5-25mm)

[0072] Regenerated coarse aggregate: 570kg (particle size 5-25mm, meeting claim 3)

[0073] Admixture: 1.76kg (wood-calcium-based common water reducer, meeting the requirements of "Concrete Pumping Agent" (JC473-2001))

[0074] The materials were prepared according to the proportions mentioned above and their properties were tested according to the "Standards for Test Methods of Mechanical Properties of Ordinary Concrete" (GB / T50081-20...

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Abstract

The invention relates to premixing environmental protection energy-saving concrete and a process for preparation, which employs regenerating coarse aggregate formed by slacking waste concrete and mineral admixture processed by waste slag as main materials and adds natural carpolite, sand, cement, additive and water and stir to form. The concrete has good working property and durability, high strength and is adapted for being transported by mixer truck or pump, which can be widely used in road engineering and constructional engineering and the like.

Description

technical field [0001] The invention belongs to the technical field of concrete materials, and in particular relates to a ready-mixed environment-friendly and energy-saving concrete whose main raw materials are recycled coarse aggregate obtained by crushing waste concrete and mineral admixture processed by industrial waste slag and a preparation method thereof. Background technique [0002] According to statistics, the total amount of waste concrete produced in my country every year (the sum of waste concrete in the concrete production process, building construction process and building demolition process) will reach more than 120 million tons. With the further acceleration of my country's economic construction, the total amount of waste concrete will increase. Crushing waste concrete as recycled aggregate can not only solve the problem of shortage of natural aggregate resources, but also benefit the environmental protection of aggregate production areas, and can reduce the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B14/06C04B18/16
CPCY02W30/91
Inventor 肖建庄徐亚玲魏民雷斌黄迎春
Owner TONGJI UNIV
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