Coral sand hydraulicity road base, road base material and preparation method thereof

Abstract

The invention discloses a coral sand hydraulicity road base, road base material and preparation method thereof, and relates to the field of a road engineering construction. The preparation method of the road base material comprises the following steps: measuring 80 to 95 percent of coral sand and 20 to 5 percent of ordinary Portland cement, uniformly mixing and stirring the coral sand and ordinary Portland cement to obtain a primary mixture; then measuring 99.5 to 99.95 percent of the primary mixture and 0.5 to 0.05 percent of coral sand hydraulicity curing agent, uniformly mixing and stirring the primary mixture and coral sand hydraulicity curing agent to obtain a pre-mixed material, and controlling the water content of the pre-mixed material at 6 to 8 percent; the coral sand hydraulicity curing agent is formed by mixing the following components: 40 to 60 percent of elastic styrene-acrylic latex, 30 to 20 percent of nano aluminum sol and 30 to 20 percent of nano silicon sol, and the solid content of the elastic styrene-acrylic latex is more than 55 percent. The road base is formed by adopting the road base material according to a standard road base construction method. The coral sand is used for producing the road base material, thereby tailoring measures to suit local conditions; the formed road base is high in crack resistance, unlikely to corrode and long in service life.

Description

technical field [0001] The invention relates to the field of road engineering construction, in particular to a coral sand hydraulic road base, a road base material and a preparation method thereof. Background technique [0002] Due to the long distance, poor conditions, and complicated sea conditions, if the road base materials composed of lime, cement, and yellow sand in the traditional technology are used to reclaim land, lay roads and build airports, not only the freight of these materials will be extremely high, but also The quality requirements cannot be met for the following reasons: [0003] Traditional road base materials include cement-stabilized soil, lime-stabilized soil and fly ash macadam. In cement-stabilized soil, cement, as a hydraulic material, produces colloids when it meets water. These colloids cannot form a unified whole in the soil, and will also destroy the structure and connection of the soil itself, resulting in a large number of unstable spaces. U...

AI Technical Summary

Problems solved by technology

The road base formed by fly ash gravel is a semi-rigid base, which has obvious hydraulic and retarding properties. However, once the aggregates, lime and fly ash are combined, the chemical reaction inside stops, and the road matrix formed is too rigid and easy to build. Cracked by temperature and humidity, poor crack resistance

[0004] In addition, most of the beaches of Xisha, Nansha and Zhongsha Islands are composed of coral sand. Coral sand is calcareous sand composed mainly of coral debris and debris. Its calcium content is as high as 90%, and it is mainly distributed around coral islands and coral reefs. , coral sand is rich in resources and is cheap construction sand, but there is no way to use coral sand to produce road base materials