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Preparation method of special cement asphalt (CA) mortar for slab track elastic adjusting layer

A technology of slab track and adjustment layer, which is applied in the field of preparation of special CA mortar for elastic adjustment layer of slab track, can solve problems such as not being ideal enough, and achieve the effects of preventing water and soil erosion, simple manufacturing process, and low manufacturing cost

Inactive Publication Date: 2012-02-01
GUIZHOU CONSTR SCI RES & DESIGN INST OF CSCEC +1
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  • Abstract
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Problems solved by technology

Therefore, the existing method of adopting river sand to make CA mortar is still not ideal enough

Method used

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with embodiment.

[0015] Implementation of the present invention: when making special CA mortar for slab track elastic adjustment layer, make according to the preparation method of a kind of special CA mortar for slab track elastic adjustment layer of the present invention, promptly take as the cement 20~ 30 parts, 25-35 parts of emulsified asphalt, 35-55 parts of mountain sand as fine aggregate, 3-7 parts of admixture, 5-9 parts of expansion agent, and the strength grade of cement used in the prior art is not lower than 42.5 Ordinary Portland cement or rapid hardening sulfoaluminate cement; the emulsified asphalt can directly use the emulsified asphalt in the prior art, but the polarity of the emulsified asphalt particles is required to be cationic, and the residue content of the emulsified asphalt is 58%~ 63%, the penetration of emulsified asphalt (25°C, 100g) is 60-120, and the ductility of emu...

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Abstract

The invention discloses a preparation method of special cement asphalt (CA) mortar for a slab track elastic adjusting layer. The special CA mortar for the slab track elastic adjusting layer can be prepared by taking 20 to 30 parts of cement serving as a cementing material, 25 to 35 parts of emulsified asphalt, 35 to 55 parts of mountain sand serving as fine aggregate, 3 to 7 parts of admixture and 5 to 9 parts of expanding agent in part by weight and stirring and mixing water and the raw materials in a water-mortar ratio of 0.20 to 0.50. The CA mortar has the advantage of fully substituting river sand; and the method has the advantages of simplicity in preparation process, low preparation cost, capabilities of reducing excessive exploitation of river sand resources and preventing water loss and soil erosion and the like. Moreover, the CA mortar is particularly suitable to be used in mountainous areas, and the method can provide powerful technical support for application of mountain sand in high-speed rails and can play a positive promoting role in reducing destruction of environmental resources.

Description

Technical field [0001] The present invention involves the preparation method of a plate -type orbital elastic adjustment layer. It belongs to the field of CA mortar production technology. Background technique [0002] The mortar made of cement, emulsion asphalt, sand, sand and various blended materials is called CA mortar.Because the CA mortar has certain elasticity and a certain strength, it has been widely used for plate -orbital elastic adjustment layers as railway tracks.At present, CA mortar in existing technologies generally uses river sand as fine aggregate, and there is a disadvantage of large amounts of river sand.Because river sand is both mineral resources and valuable environmental resources, river sand has the role of cultivation of moisture and protecting the environment, so excessive mining of river sand resources will not only cause geological disasters that collapse the river bank, but also to the water environment along the river.Especially the groundwater envir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B28/04C04B28/36
Inventor 帅颂宪杨松白蓉李琰曾小萍王玉麟张韵
Owner GUIZHOU CONSTR SCI RES & DESIGN INST OF CSCEC
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