Cement mortar stabilized crushed stone pavement base mixture and construction method thereof

Abstract

The invention provides a cement motor mixed material for stabilizing macadam pavement base and a construction method thereof. The mixed material comprises 70 to 90 parts by weight of macadam mixed material with a particle size of 4.75 to 37.5 mm and 10 to 30 parts of cement mortar; wherein the cement mortar is composed of aggregate, cement and water, the water / aggregate ratio is 5 to 12%, the cement / aggregate ratio is 15 to 30%, the water / aggregate ratio represents the mass percentage of water / aggregate, and the cement / aggregate ratio represents the mass percentage of cement / aggregate. The mixed material has the advantages that the construction technology is simple, the used mechanical equipment is small, less mechanical equipment is used; the used materials are common, a compact skeleton can be formed without precisely controlling the using amount of raw materials, and the technology is easy to master, is very matured, and is easy to popularize and use. The provided mixed material and construction method solve the problem that due to the insufficient or excess filling of gap in macadam skeleton, a skeleton is not compact or a skeleton cannot be formed; and can guarantee that pavement base forms a compact skeleton structure, so the cracks are reduced, and the quality and service life of roads are ensured.

Description

technical field [0001] The invention relates to the technical field of pavement base construction and maintenance, in particular to a cement mortar stabilized crushed stone pavement base mixture and a construction method thereof. Background technique [0002] At present, most of the highways and urban roads in my country have been built with inorganic binder base + asphalt binder surface layer structure, and most of the inorganic binder bases are cement stabilized gravel. Cement-stabilized crushed stone consists of aggregates and a mortar volume, wherein the aggregates are graded crushed stones, the mortar volume includes water and cementitious materials, and the cementitious materials consist of cement and mixture. The construction method of cement-stabilized gravel is: mix all the materials used in the mixing station with a lime-soil mixer in proportion and mix them evenly, then transport them to the construction site, pave them with a paver, and then roll them into shape....

AI Technical Summary

Problems solved by technology

[0003] The invention provides a cement mortar stabilized crushed stone pavement base mixture and its construction method, which solves the problem that the gravel skeleton is not compacted or cannot form a skeleton due to insufficient or overfilling of the voids in the gravel skeleton, and ensures that the pavement base forms a dense skeleton structure. Reduce cracks and ensure the quality and service life of the road