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Coral aggregate aggregate base layer or cushion layer material and preparation method thereof

A technology for pellets and corals, which is applied to clay preparation devices, chemical instruments and methods, cement mixing devices, etc., can solve the problems of unfavorable road engineering durability, unconsumed solid waste of islands and reefs, low environmental benefits and economic benefits, etc. Achieve the effect of improving seawater corrosion resistance, protecting the environment, and high rate of local material collection

Pending Publication Date: 2021-03-12
CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, it is disclosed that Portland cement stabilized coral sand is used as road base or cushion material. Although the rate of local materials is improved, due to the special natural environment of oceanic islands and reefs, seawater has a strong resistance to ordinary Portland cement after hardening. Strong corrosion effect, which is not conducive to the durability of road works
At the same time, none of the existing technologies can eliminate the solid waste on islands and reefs, and even need to transport gravel from the inland, which is very low in terms of environmental protection and economic benefits

Method used

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  • Coral aggregate aggregate base layer or cushion layer material and preparation method thereof
  • Coral aggregate aggregate base layer or cushion layer material and preparation method thereof
  • Coral aggregate aggregate base layer or cushion layer material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A coral aggregate granular base material, comprising: 4% slag sulphoaluminate cement, 30.5% coral aggregate pellets with a particle diameter of 0mm to 20mm, 10.6% coral aggregate pellets with a particle diameter of 0mm to 45mm, 20 % steel slag fine sand, 20% waste concrete and 14.9% seawater. The final gradation after mixing the four kinds of pellets is: the mass ratio of the particle size ranges of 0mm-4.75mm, 4.75mm-31.5mm, and 31.5mm-45mm is 40:50:10.

[0044] The preparation method of the above-mentioned base material comprises the following steps:

[0045] (1) Determination of the water content of the coral aggregate pellets is 10.5%, and the water content of the coral aggregate pellets is calculated according to the quality of the coral aggregate pellets to be 4.3%;

[0046] (2) Through the compaction test, determine the optimum water content of the base layer to be 19.2%;

[0047] (3) Subtracting the water content quality of the coral aggregate pellets from the o...

Embodiment 2

[0051] A coral aggregate granular base or subbase material, comprising: 6% slag sulphoaluminate cement, 21.4% coral aggregate pellets with a particle size of 0mm to 20mm, and 34.1% coral aggregate particles with a particle diameter of 0mm to 45mm materials, 20% waste concrete, 10% waste incineration slag and 8.5% seawater. The final gradation of the four kinds of pellets is: 0mm~4.75mm, 4.75mm~31.5mm, 31.5mm~45mm, the mass ratio of particle size range is 35:45:20.

[0052] The preparation method of the above-mentioned base material comprises the following steps:

[0053] (1) Determining the water quality of the coral aggregate pellets is 14.2%, and calculating the water quality of the coral aggregate pellets according to the quality of the coral aggregate pellets is 7.9%;

[0054] (2) Through the compaction test, it is determined that the optimum water content of the base is 16.4%;

[0055] (3) Subtracting the water content of the coral aggregate pellets from the optimal wat...

Embodiment 3

[0059] A cement-stabilized base material, comprising: 9% marine cement, 13.8% coral aggregate pellets with a particle size of 0mm to 20mm, 31.3% coral aggregate pellets with a particle diameter of 0mm to 45mm, 10% steel slag fine sand, 20% % waste concrete, 5% waste incineration slag and 10.9% seawater. The final gradation of the four kinds of pellets is: 0mm~4.75mm, 4.75mm~31.5mm, 31.5mm~45mm, the mass ratio is 30:55:15.

[0060] The preparation method of the above-mentioned base material comprises the following steps:

[0061] (1) Determining the water quality of the coral aggregate pellets is 8.9%, and calculating the water quality of the coral aggregate pellets according to the quality of the coral aggregate pellets is 4.0%;

[0062] (2) Through the compaction test, determine the optimum water content of the base layer to be 15.9%;

[0063] (3) Subtracting the water content of the coral aggregate pellets from the optimal water content of the grassroots to obtain the cons...

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Abstract

The invention discloses a coral aggregate aggregate base layer or cushion layer material and a preparation method thereof. The raw materials comprise cement, aggregates and seawater, and the cement isslag aluminate cement or maritime work cement; and the aggregates comprise coral aggregate aggregates and one or more of steel slag fine sand, waste concrete and waste incineration slag. Local materials are used, the cost is low, the seawater corrosion resistance is high, the flexural-tensile strength is high, the anti-cracking performance is high, the anti-permeability performance is high, the early hydration heat is low, the construction period is short, and the material is suitable for serving as a pavement base layer or cushion layer material. A vibration stirring mode is adopted for mixing, the mixture is uniform, and the material can be applied to pavement base layer or cushion layer engineering construction of airfield runways on islands and reefs, highways, ports, wharfs and the like.

Description

technical field [0001] The invention relates to the technical field of road engineering materials, in particular to a coral aggregate granular base or cushion material and a preparation method thereof. Background technique [0002] In the construction of remote islands and reefs, traditional construction materials are used, which have long transportation cycles, high transportation costs, and poor economic benefits. In order to speed up the construction of remote islands and reefs, broken corals can be used as building materials to increase the rate of local materials. In the prior art, it is disclosed that ordinary portland cement stabilized coral sand is used as road base or cushion material. Although the rate of local materials is improved, due to the special natural environment of oceanic islands and reefs, seawater has the effect of hardening ordinary Portland cement. Strong corrosion effect is not conducive to the durability of road works. At the same time, none of t...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B28/08B28C5/00E01C3/00C04B111/24
CPCC04B28/00C04B28/08E01C3/00E01C3/003B28C5/006B28C5/003C04B2111/24C04B2201/50C04B14/28C04B18/142C04B18/16C04B22/0026C04B18/10
Inventor 丁小平韩宇栋齐晓彤余以明宋涛文侯东伟王振波
Owner CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP
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