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A pavement base material

A pavement base material and raw material technology, applied in roads, roads, buildings, etc., can solve the problems of destroying the integrity of the soil and reducing the strength of the soil, achieving good market and application prospects, low material costs, and good technical and economic effects Effect

Active Publication Date: 2020-08-04
ARCHITECTURAL DESIGN RES INST OF GUIZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Guizhou Province is the main distribution area of ​​red clay in my country. Affected by the alternating hot and humid climate, the red clay will shrink and form cracks. Most of the cracks on the surface are vertical openings, which gradually close downwards to form a network of cracks, thus destroying the soil. In the rainy season, its natural water content is often greater than the plastic limit, or even close to the liquid limit, so that the strength of the soil decreases sharply; however, with the rapid development of road construction in Guizhou in recent years, red clay often occurs The construction work is carried out on the foundation, but affected by the characteristics of the red clay itself, the pavement subgrade needs to be built on the red clay foundation. In view of the above problems, the applicant designed a new pavement base material that can effectively use red clay

Method used

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Experimental program
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Effect test

Embodiment 1

[0082] Embodiment 1, the preparation of red clay solidifying agent: get fly ash 45kg; Silica fume 1kg; Portland cement 18kg; Gypsum 3kg; Sodium carbonate 8kg; Sodium silicate 8kg; 1kg can be mixed and stirred to prepare the red clay curing agent. The fly ash used is ultra-fine fly ash with a particle size of 0.9-5 μm; the water-soluble polymer used is one of magnesium aluminum silicate, magnesium lithium silicate, magnesium sodium silicate, bentonite, and modified bentonite. a mixture of one or more species.

[0083] Preparation of cured red clay: Take 70kg of prepared red clay curing agent and 930kg of red clay and mix evenly to obtain cured red clay.

[0084] Preparation of pavement base material: take 600kg of gravel and 400 kg of solidified red clay and mix them to obtain the pavement base material.

[0085] The construction shall strictly abide by the relevant technical specifications, and remove stones and other sundries on the original surface of the subbase. After m...

Embodiment 2

[0086] Embodiment 2, the preparation of red clay curing agent, get fly ash 50kg; Silica fume 5kg; Portland cement 22kg; Gypsum 7kg; Sodium carbonate 12kg; Sodium silicate 12kg; The red clay curing agent can be obtained by mixing and stirring. The fly ash used is ultra-fine fly ash with a particle size of 0.9-5 μm; the water-soluble polymer used is one of magnesium aluminum silicate, magnesium lithium silicate, magnesium sodium silicate, bentonite, and modified bentonite. a mixture of one or more species.

[0087] Preparation of cured red clay: take 120 kg of red clay curing agent and 880 kg of red clay and mix them evenly to obtain cured red clay.

[0088] Preparation of pavement base material: Take 800kg of gravel and 200kg of solidified red clay and mix to obtain the pavement base material.

[0089] The construction shall strictly abide by the relevant technical specifications, and remove stones and other sundries on the original surface of the subbase. After mixing, the ...

Embodiment 3

[0090] Embodiment 3, the preparation of red clay curing agent: get fly ash 460kg; Silica fume 50kg; Portland cement 200kg; Gypsum 40kg; Sodium carbonate 100kg; Sodium silicate 100kg; The red clay curing agent can be obtained by mixing and stirring. The fly ash used is ultra-fine fly ash with a particle size of 0.9-5 μm; the water-soluble polymer used is one of magnesium aluminum silicate, magnesium lithium silicate, magnesium sodium silicate, bentonite, and modified bentonite. a mixture of one or more species.

[0091] Preparation of cured red clay: take 90 kg of red clay curing agent and 910 kg of red clay and mix them evenly to obtain cured red clay.

[0092] Preparation of pavement base material: Take 700kg of gravel and 300kg of solidified red clay and mix them to obtain the pavement base material.

[0093] The construction shall strictly abide by the relevant technical specifications, and remove stones and other sundries on the original surface of the subbase. After mi...

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Abstract

The invention discloses a novel pavement base material, which is prepared from the following raw materials according to a mass ratio: 20-40 parts of cured red clay and 60-80 parts of gravel; the cured red clay is prepared by doping a red clay curing agent into the red clay in parts by mass, wherein the doped red clay curing agent accounts for 7 to 12 percent of the mass of a mixture of the red clay and the red clay curing agent. The red clay curing agent is adopted to cure the improved red clay and the graded gravel to compound the novel pavement base material, so that the novel pavement base material not only has good road performance but also has low material cost, and good technical and economic effects are achieved.

Description

technical field [0001] The invention relates to a pavement base material, which belongs to the technical field of application of engineering building materials. Background technique [0002] Red clay is a special kind of soil in geotechnical engineering. It belongs to carbonate rocks such as limestone and dolomite. It is a highly plastic red clay formed by weathering under subtropical high-temperature and humid climate conditions. It has high dispersibility and high water content. , high plasticity, high content of colloidal components and other engineering properties. Guizhou Province is the main distribution area of ​​red clay in my country. Affected by the alternating hot and humid climate, the red clay will shrink and form cracks. Most of the cracks on the surface are vertical openings, which gradually close downwards to form a network of cracks, thus destroying the soil. In the rainy season, its natural water content is often greater than the plastic limit, or even clos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04E01C3/00
CPCC04B28/04C04B2111/0075E01C3/00C04B18/08C04B18/146C04B22/10C04B12/04C04B14/104C04B22/00C04B14/10C04B14/02
Inventor 杨兴之周纯赖正林谢先浩
Owner ARCHITECTURAL DESIGN RES INST OF GUIZHOU