Sulfur-oxygen-magnesium cement stable gravel road surface base material

A technology of pavement base material and magnesium oxysulfate cement, which is applied in the field of building materials, can solve the problems of broken plate surface structure, poor corrosion resistance, damage, etc., and achieve the effect of convenient operation, low construction difficulty, and easy large-scale application

Inactive Publication Date: 2018-05-15
QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, the pavement structure of high-grade highways in my country is mostly semi-rigid ordinary concrete base pavement, which is prone to premature plate breakage a

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A magnesium oxysulfate cement stabilized crushed stone pavement base material, characterized in that it comprises the following components by weight: 100 parts of activated magnesium oxide powder; 125 parts of magnesium sulfate solution with a mass fraction of 20%; 5 parts; 750 parts of aggregate; wherein the active magnesium oxide is lightly burned magnesite powder, wherein the content of active magnesium oxide is ≧60%, the additive is phosphoric acid, and the aggregate is crushed stone.

[0017] The above-mentioned magnesium phosphate cement stabilized crushed stone pavement base material is constructed by using a semi-rigid base layer construction method according to the proportion, and is used for laying high-salt brine corrosion roads in coastal areas of my country and western salt lake areas.

Embodiment 2

[0019] A magnesium oxysulfate cement stabilized crushed stone pavement base material, characterized in that it comprises the following components by weight: 100 parts of activated magnesium oxide powder; 50 parts of magnesium sulfate solution with a mass fraction of 5%; 0.05 parts; 600 parts of aggregate; wherein the active magnesium oxide is dolomite caustic powder, wherein the content of active magnesium oxide is ≧60%, the additive is phosphate, and the aggregate includes pebbles.

[0020] The above-mentioned magnesium phosphate cement stabilized crushed stone pavement base material is constructed by using a semi-rigid base layer construction method according to the proportion, and is used for laying high-salt brine corrosion roads in coastal areas of my country and western salt lake areas.

Embodiment 3

[0022] A magnesium oxysulfate cement stabilized crushed stone pavement base material, characterized in that it comprises the following components by weight: 100 parts of activated magnesium oxide powder; 200 parts of magnesium sulfate solution with a mass fraction of 30%; 10 parts; 900 parts of aggregate; wherein the active magnesium oxide is a basic magnesium carbonate calcined product, wherein the content of active magnesium oxide is ≧60%, the additive is citric acid, and the aggregate is artificial stone.

[0023] The above-mentioned magnesium phosphate cement stabilized crushed stone pavement base material is constructed by using a semi-rigid base layer construction method according to the proportion, and is used for laying high-salt brine corrosion roads in coastal areas of my country and western salt lake areas.

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PUM

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Abstract

The invention discloses a sulfur-oxygen-magnesium cement stable gravel road surface base material. The material comprises the following components: active magnesium oxide powder, a magnesium sulfate solution, an additive, an aggregate and water, wherein the active magnesium oxide powder is one or a compound of more selected from a group consisting of magnesite light burning powder, dolomite caustic powder, a calcined product of basic magnesium carbonate, and various calcined products of magnesium hydroxide, wherein the content of the active magnesium oxide is greater than or equal to 60%, theadditive is one or more selected from phosphoric acid, phosphates and citric acid, and the aggregate comprises one or more selected from various gravel, pebbles, artificial stones, river sand, mountain sand, artificial sand and the like. The magnesium phosphate cement stable gravel road surface base material is used for construction according to a semi-rigid base construction method, and is used for paving roads with high salt-halogen corrosion in coastal areas and western salt lake areas of China. The construction is convenient, the operation is simple, and the material is easy to promote andapply.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a magnesium oxysulfate cement stabilized crushed stone pavement base material. technical background [0002] Ordinary concrete is a brittle material with heterogeneity, multiple defects, low tensile strength, and hard plastic deformation. application. my country's transportation industry is increasingly developed, but my country's transportation tasks are increasingly arduous. At present, the pavement structure of high-grade highways in my country is mostly semi-rigid ordinary concrete base pavement, which is prone to premature plate breakage and surface structure damage during use; at the same time, the corrosion resistance is poor, and it is not suitable for high-salt brine in western my country corrosion area. Therefore, finding pavement base materials with stable structure and resistance to brine corrosion has important practical significance and social benefit...

Claims

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Application Information

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IPC IPC(8): C04B28/30C04B111/20
CPCC04B28/30C04B2111/0075C04B2111/20C04B2201/50C04B22/165C04B14/02C04B22/16C04B24/06
Inventor 肖学英李颖文静董金美常成功郑卫新
Owner QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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