Anti-crack type rubber powder cement stabilized macadam mixture and preparation method thereof

Abstract

The invention relates to an anti-crack type rubber powder cement stabilized macadam mixture which comprises the following components in parts by weight: 89.5-91.7 parts of a graded broken stone mixture, 4-5 parts of cement, 0.3-0.5 part of scrap tire rubber powder particles for road and 4.0-5.0 parts of drinking water. The invention further relates to a preparation method of the anti-crack type rubber powder cement stabilized macadam mixture. The preparation method comprises the following steps: (1) preparing a graded broken stone mixture, namely adopting a graded broken stone mixture with thefollowing grading range; (2) mixing, namely uniformly stirring the graded broken stone mixture, namely adding 4-5 parts of cement by weight into 89.5-91.7 parts of the graded broken stone mixture, continuously stirring to a uniform state, adding 0.3-0.5 part of scrap tire rubber powder particles for road, adding drinking water with a weight percentage of 4.0-5.0%, and uniformly stirring. The anti-crack type rubber powder cement stabilized macadam mixture mixed with the scrap tire rubber powder particles for road serves as a semi-flexible asphalt pavement of the base to be reasonably applied to high-grade highways.

Description

technical field [0001] The invention belongs to the field of pavement materials, in particular to a crack-resistant rubber powder cement stabilized gravel mixture and a preparation method thereof. Background technique [0002] Based on the advantages of cement-stabilized macadam mixture, such as strong bearing capacity, high rigidity, good slab performance, simple and easy-to-control construction technology, and good temperature and humidity stability, most of the projects that have been built or are under construction adopt cement-stabilized macadam base Structural form of asphalt pavement. In a large number of applications, it was found that although the traditional cement-stabilized macadam mixture has many advantages as the base of asphalt pavement, there are also problems that are difficult to solve. The most prominent problem is the early asphalt pavement caused by its cracking. damage problem. Indoor tests and a large number of solid engineering applications have sh...

AI Technical Summary

Problems solved by technology

In terms of layer structure, it is assumed that there is a continuous interlayer system between the asphalt surface layer and the cement-stabilized macadam structure layer. The cement-stabilized macadam used as the pavement base mainly bears bending and tensile stress, while the material itself has good board properties and relatively low rigidity. The high tensile strength and low tensile strength make it particularly sensitive to traffic loads, and it is difficult to withstand the bending and tensile stress caused by heavy traffic and the bending and tensile fatigue stress caused by repeated traffic loads, so it will inevitably be damaged during use. cracking phenomenon

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