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Semi-flexible pavement injection grout

A semi-flexible pavement and mud technology, applied in the field of materials, can solve problems such as pinholes, linear cracks, surface cracks, etc., and achieve the effects of improving road performance, prolonging service life, and reducing dry shrinkage

Inactive Publication Date: 2010-04-14
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, during the use of semi-flexible pavement, a series of damage problems also appeared, such as surface cracks, linear cracks, pinholes, scars on the road surface, etc.

Method used

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  • Semi-flexible pavement injection grout

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Taking the preparation of semi-flexible pavement perfusion cement slurry 100kg of the present invention as an example, the raw materials used and their mass proportions are:

[0032] Qinling 42.5# cement 59.4072kg

[0033] Water 33.5807kg

[0034] TH-928 polycarboxylate superplasticizer 0.637kg

[0035] UEA expansion agent 6.37kg

[0036] ZY-99 type triterpene saponin air-entraining agent 0.0051kg

[0037] Its preparation method is as follows:

[0038] Take water, Qinling 42.5# cement, TH-928 polycarboxylate water reducer, UEA expansion agent and ZY-99 type triterpene saponin air-entraining agent according to the mass parts proportioning of the present invention, and water, TH-928 polycarboxylate Water reducer and ZY-99 type triterpene saponin air-entraining agent are mixed to make a mixed liquid, then Qinling 42.5# cement and UEA expansion agent are put into a mixing pot, stirred evenly with a mixer, added the mixed liquid, stirred until uniform, and prepared Fill...

Embodiment 2

[0040] Taking the preparation of semi-flexible pavement pouring cement slurry 100kg of the present invention as an example, the raw materials used and their proportioning ratio are as follows:

[0041] Qinling 42.5# cement 54.0064kg

[0042] Water 37.3kg

[0043]TH-928 polycarboxylate superplasticizer 0.662kg

[0044] UEA expansion agent 7.944kg

[0045] ZY-99 type triterpene saponin air-entraining agent 0.0876kg

[0046] The preparation method is the same as that of Example 1, and the cement slurry is poured into the semi-flexible pavement.

Embodiment 3

[0048] Taking the preparation of semi-flexible pavement pouring cement slurry 100kg of the present invention as an example, the raw materials used and their proportioning ratio are as follows:

[0049] Qinling 42.5# cement 65.6958kg

[0050] Water 33.1kg

[0051] TH-928 polycarboxylate superplasticizer 0.001kg

[0052] UEA expansion agent 1.2032kg

[0053] ZY-99 type triterpene saponin air-entraining agent 0kg

[0054] The preparation method is the same as that of Example 1, and the cement slurry is poured into the semi-flexible pavement.

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Abstract

A semi-flexible pavement injection grout is characterized in that the semi-flexible pavement injection grout comprises the following raw materials by mass percentage: 54.0064-65.6958 percent of common silicate cement, 33.1-37.3 percent of water, 0.001-0.662 percent of water reducing agents, 0-7.944 percent of plumping agents and 0-0.8028 percent of air entraining agents. By employing the semi-flexible pavement injection grout for construction, the grout can be easily poured into the clearances of asphalt mixtures and well combined with the asphalt mixtures. The semi-flexible pavement injection grout of the invention has small dress shrinkage and strong intensity, which can improve the road performance of semi-flexible pavement and prolong the life time of the semi-flexible pavement.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a semi-flexible pavement pouring cement slurry. Background technique [0002] At present, with the further development of high-grade highway construction, the traffic volume and axle load are increasing rapidly, which not only makes the requirements for the strength and stability of the highway pavement structure increasingly higher, but also the requirements for driving speed and comfort. However, asphalt pavement is greatly affected by temperature due to the special properties of asphalt materials such as viscoelasticity. When the temperature is low in winter, the asphalt mixture’s ability to resist deformation is greatly reduced, showing brittleness, and cracks will occur under the action of load; Permanent deformation such as rutting occurs, especially in highway toll stations, intersections, steep and long slope sections, service areas and other sections where...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04E01C7/26C04B111/70
Inventor 裴建中陈祥峰张红张志辉张久鹏常明丰
Owner CHANGAN UNIV
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