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Improvement Method of Abrasion Resistance of Cement Concrete Pavement

A technology of cement concrete and wear resistance, which is applied in the field of road construction, can solve the problems of production cost, road performance limitation of construction technology, difficulty in popularization and implementation, etc., and achieve the effect of easy control of construction quality, easy promotion and application, and improvement of surface quality

Inactive Publication Date: 2015-11-11
CHONGQING UNIV
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Problems solved by technology

In recent years, under the influence of developed countries generally adopting epoxy floor coatings, or metal and non-metal wear-resistant materials for wear-resistant treatment of concrete floors, wear-resistant concrete and wear-resistant materials have developed rapidly in my country, and there have been There are many types of wear-resistant ground and new wear-resistant materials, but these new materials have not been used for reference in road concrete. Difficult to popularize and implement on concrete pavement with large quantity and wide area

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  • Improvement Method of Abrasion Resistance of Cement Concrete Pavement

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Embodiment Construction

[0020] The present invention will be described in detail below.

[0021] A method for improving the wear resistance of cement concrete pavement, comprising the following steps:

[0022] 1) After the cement concrete pavement is formed, spray K once before the initial setting of the concrete 2 CO 3 aqueous solution;

[0023] 2) After the initial setting of concrete, use K 2 CO 3 Water solution curing concrete for 3-5 days, spray once a day;

[0024] In steps 1 and 2), the K 2 CO 3 K in aqueous solution 2 CO 3 The mass ratio to water is 13-18:100, preferably 15:100, and the dosage per square meter of cement concrete pavement is 120-150 grams.

[0025] 3) Use the aqueous solution of composite polycarboxylic acid-based high-efficiency water-reducing agent and shrinkage reducing agent to maintain the concrete surface for 3-7 days, and spray once a day. In the aqueous solution of composite polycarboxylic acid-based high-efficiency water-reducing agent and shrinkage reducing ...

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Abstract

The invention belongs to the technical field of road construction, and provides a method for improving wearing resistance of cement concrete pavement. The method comprises the following steps: (1) after the cement concrete pavement is molded, spraying a K2CO3 solution before prehardening of the concrete; (2) after the prehardening of the concrete, nursing the concrete for 3-5 days by using the K2CO3 aqueous solution; and (3) nursing the concrete for 3-7 days by using an aqueous solution containing composite polycarboxylic acid high-efficiency water reducing agents and shrinkage reducing agents. Compared with the prior art, the method provided by the invention can effectively improve the surface quality of the cement concrete pavement, improve the wearing resistance of the cement concrete pavement, improve the nursing condition and prolong the service life of the cement concrete pavement; the materials used in the method are wide in resource, stable in quality and free of adverse effect on other pavement properties except the wearing resistance of the concrete pavement, and thus the method is easy to use.

Description

technical field [0001] The invention belongs to the technical field of road construction, and in particular relates to a method for improving the wear resistance of cement concrete pavement. Background technique [0002] Due to many advantages such as high strength, high rigidity, no rutting, good durability, and low construction and maintenance costs, cement concrete pavement is widely used in various road projects. In recent years, due to insufficient supply of asphalt and other reasons, it is urgent to speed up the development of cement concrete pavement. At present, a large number of cement concrete pavements have been built in our country, but many pavements have severe wear and tear diseases such as peeling, pockmarked surface, and exposed skin shortly after they are opened to traffic, which greatly reduces the quality of the pavement and affects the life of the pavement. As one of the important properties of road concrete, the research on wear resistance of cement co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B40/00
Inventor 黄煜镔余帆范英儒任葳葳
Owner CHONGQING UNIV
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