Magnesium phosphate cement stabilized macadam road base material

A pavement base material, magnesium phosphate cement technology, applied in the field of building materials, can solve the problems of long maintenance time, high-density traffic interference, etc., and achieves low construction difficulty, good economic and social benefits, and easy large-scale The effect of promoting the application

Inactive Publication Date: 2018-04-06
QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the pavement structure of my country's high-grade highways is mostly semi-rigid base asphalt concrete pavement. In the process of repairing this kind of pavement, the maintenance time is often long, which has a great impact on high-density traffic interference

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A magnesium phosphate cement stabilized gravel pavement base material, said pavement base material comprising the following components by weight: 100 parts of sintered magnesium oxide powder, 125 parts of phosphate, 3 parts of admixture, 700 parts of aggregate and 50 parts of water share. Wherein, the sintered magnesia part is lightly burned magnesite powder, the phosphate is ammonium dihydrogen phosphate, the additive is boric acid, and the aggregate includes gravel.

[0019] The above-mentioned magnesium phosphate cement stabilized crushed stone pavement base material is constructed according to the ratio using the conventional semi-rigid base construction method, and is used for the rapid repair of ordinary roads, high-grade roads, airport runways and other road surfaces.

Embodiment 2

[0021] A magnesium phosphate cement stabilized gravel pavement base material, said pavement base material comprising the following components by weight: 100 parts of sintered magnesium oxide powder, 50 parts of phosphate, 1 part of admixture, 500 parts of aggregate and 40 parts of water share. Wherein, the sintered magnesium oxide is dolomite caustic powder, the phosphate is potassium dihydrogen phosphate, the additive is borax, and the aggregate includes pebbles.

[0022] The above-mentioned magnesium phosphate cement stabilized crushed stone pavement base material is constructed according to the ratio using the conventional semi-rigid base construction method, and is used for the rapid repair of ordinary roads, high-grade roads, airport runways and other road surfaces.

Embodiment 3

[0024] A magnesium phosphate cement stabilized gravel pavement base material, said pavement base material comprising the following components by weight: 100 parts of sintered magnesium oxide powder, 80 parts of phosphate, 2 parts of admixture, 600 parts of aggregate and 80 parts of water share. Wherein, the sintered magnesium oxide is a calcined product of basic magnesium carbonate, the phosphate is sodium dihydrogen phosphate, the additive is boric acid, and the aggregate is artificial stone.

[0025] The above-mentioned magnesium phosphate cement stabilized crushed stone pavement base material is constructed according to the ratio using the conventional semi-rigid base construction method, and is used for the rapid repair of ordinary roads, high-grade roads, airport runways and other road surfaces.

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Abstract

The invention discloses a magnesium phosphate cement stabilized macadam road base material. The road base material is characterized by comprising the following components: sintered magnesia powder, phosphate, an admixture, aggregate and water, wherein the sintered magnesia powder is one or a composition of more than one in magnesite light calcined powder, dolomite caustic powder, basic magnesium carbonate calcined product or calcined product of magnesium hydroxide; the phosphate is one or a mixture of several in ammonium dihydrogen phosphate, potassium dihydrogen phosphate and sodium dihydrogen phosphate; the admixture is boric acid or borax; and the aggregate comprises various kinds of macadam, pebble, artificial stone, river sand, hilly sand, manufactured sand and the like. The road basematerial disclosed by the invention has the advantages of convenience in construction, simpility in operation, fast setting and hardening,and high strength, and is capable of shortening the pavementrepair time and easy to popularize and use.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a magnesium phosphate cement stabilized crushed stone pavement base material. technical background [0002] In recent years, my country's road development and construction have advanced by leaps and bounds, and the transportation industry has become increasingly developed. At the same time, different degrees of damage have appeared on the road surface one after another, such as deformation, rutting, wear, cracking and so on. With the rapid growth of traffic volume, the difficulty of road surface maintenance is increasing; [0003] Roads are public resources, and whether they are smooth or not is closely related to the quality of life of ordinary people. There are many congestion points closely related to road maintenance and construction. Among the many construction sites, many construction units are working brutally, occupying road resources at will, and seriously increasing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/34
CPCC04B28/344C04B2111/0075C04B22/066C04B14/02C04B22/082C04B22/08
Inventor 肖学英李颖文静常成功董金美郑卫新
Owner QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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