Composite modified cement stabilized regenerative aggregate base mixture and preparation method thereof

A composite modified and recycled aggregate technology, applied in the field of road engineering materials, can solve problems such as hindering urban beauty and occupying land, and achieve the effects of improving temperature shrinkage and frost resistance, low price and excellent performance.

Inactive Publication Date: 2018-08-03
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of construction waste not only occupies land, but also hinders the beauty of the city

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1 A composite modified cement-stabilized recycled aggregate base compound mixed with fiber and rubber is made of the following raw materials in parts by weight: 100 parts of aggregate, 5 parts of cement, 0.25 parts of composite modified material, and 0.5 parts of rubber parts, basalt fiber 0.1 part, purified water 6.2 parts. The aggregates include 45 parts of recycled aggregates and 55 parts of natural aggregates, wherein the natural aggregates are composed of crushed stones and ordinary river sand. The specific composition of the aggregates is shown in Table 2 below, consisting of natural aggregates, The gradation composition of the recycled aggregate-based mixture composed of recycled aggregate meets the standard of C-A-1 in Table 1 of the recommended gradation; the composite modified material contains 0.175 parts of diatomite and 0.075 parts of nano-calcium carbonate.

[0036] Table 2 Composition of aggregates

[0037] .

Embodiment 2

[0038] Example 2 A composite modified cement-stabilized recycled aggregate base compound mixed with fiber and rubber is made from the following raw materials in parts by weight: 100 parts of aggregate, 5 parts of cement, 0.25 parts of composite modified material, and 0.7 parts of rubber parts, basalt fiber 0.1 part, purified water 6.2 parts. The aggregates include 45 parts of recycled aggregates and 55 parts of natural aggregates, wherein the natural aggregates are composed of continuous graded crushed stones and ordinary river sand, and the composition of the continuous graded crushed stones is shown in Table 3 below, consisting of The gradation composition of the recycled aggregate grass-roots mixture composed of natural aggregate and recycled aggregate meets the standard of C-A-1 in Table 1 of the recommended grading; the composite modified material contains 0.175 parts of diatomite and 0.075 parts of nano-calcium carbonate .

[0039] Table 3 Composition of aggregates

[...

Embodiment 3

[0041]Example 3 A composite modified cement-stabilized recycled aggregate base compound mixed with fiber and rubber is made of the following raw materials in parts by weight: 100 parts of aggregate, 5 parts of cement, 0.25 parts of composite modified material, and 0.5 parts of rubber parts, basalt fiber 0.12 parts, purified water 6.2 parts. The aggregates include 45 parts of recycled aggregates and 55 parts of natural aggregates, wherein the natural aggregates are composed of continuous graded crushed stones and ordinary river sand, and the composition of the continuous graded crushed stones is shown in Table 4 below, consisting of The gradation composition of the recycled aggregate grass-roots mixture composed of natural aggregate and recycled aggregate meets the standard of C-A-1 in Table 1 of the recommended grading; the composite modified material contains 0.175 parts of diatomite and 0.075 parts of nano-calcium carbonate .

[0042] Table 4 Composition of aggregates

[0...

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Abstract

The invention discloses a composite modified cement stabilized regenerative aggregate base mixture and a preparation method thereof. The base mixture is prepared from the following raw materials in parts by weight: 100 parts of aggregate, 3 to 7 parts of cement, 0.09 to 0.49 part of composite modified material, 0.2 to 1.2 parts of rubber granules, 0.05 to 0.2 parts of basalt fibers and 5.6 to 6.6parts of water. The composite modified cement stabilized regenerative aggregate base mixture added with fibers and rubber has excellent mechanical strength, such as drying shrinkage, temperature shrinkage, frost resistance and compression resistance. The invention further discloses the preparation method for the composite modified cement stabilized regenerative aggregate base mixture added with fibers and rubber, the sources of the raw materials used by the preparation method are wide, prices are low, the preparation process is simple, and the preparation method has economic and social benefits.

Description

technical field [0001] The invention relates to the technical field of road engineering materials, in particular to a composite modified cement-stabilized recycled aggregate base-layer mixture and a preparation method thereof. Background technique [0002] With the rapid development of the economy, my country's highway construction also maintains a sustained high-speed development. Among them, the semi-rigid base of cement stabilized gravel is widely used for its high strength, low cost and wide source of raw materials. In the base course or subbase course of all grades of roads. However, the current cement-stabilized macadam semi-rigid base is prone to shrinkage cracking, which causes cracking of the surface layer, thereby shortening the service life of the pavement. In addition, non-renewable natural aggregates are commonly used in cement-stabilized macadam semi-rigid infrastructure, and the production cost is high. [0003] Construction waste refers to the general design...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02
CPCC04B28/02C04B2111/0075C04B2201/50C04B14/08C04B14/28C04B18/22C04B18/16C04B14/02C04B14/06C04B14/46
Inventor 陈渊召李振霞王金杨新胜郭玉洁袁遁甲刘丹刘晓南包洵王朝辉冯纪兵赵艳辉张军奇贾得来
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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