Oyster shell powder desalted sea sand AC-20 asphalt mixture and preparation method thereof

Abstract

The invention belongs to the technical field of building materials, and particularly relates to an oyster shell powder desalted sea sand AC-20 asphalt mixture and a preparation method thereof. The oyster shell powder desalted sea sand AC-20 asphalt mixture is prepared from, by mass, 3.0%-3.8% of oyster shell powder; 3.7%-4.3% of asphalt; 23.8%-26.6% of desalted sea sand; 6.4%-9.3% of 4 # broken stone (3-6mm); 15.2%-18.4% of 3 # broken stone (6-11mm); 17.9%-20.5% of 2 # broken stone (11-16 mm); and 25.1%-29.6% of 1 # broken stone (16-22 mm). The oyster shell powder desalted sea sand AC-20 asphalt mixture prepared by the method is a novel building material and has the characteristics of convenience in material taking, energy conservation and environmental protection; a large amount of oystershell powder and sea sand are utilized, the problems of environmental protection and land occupation of oyster shells can be solved, increasingly scarce river sand resources are relieved, the application range of the oyster shells and the sea sand is expanded, various pavement performance indexes of the asphalt mixture meet specification requirements, the cost of used materials is low, and the material cost of the AC-20 asphalt mixture can be reduced; and wide application prospects are realized.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an AC-20 asphalt mixture desalinated with oyster shell powder and a preparation method thereof. Background technique [0002] Sand is also called concrete fine aggregate, which is a necessary material for construction projects; salvaging river sand for construction aggregate production is a traditional method in my country. River sand often contains more mud and needs to be washed and dried for dry powder Mortar; as my country's economy continues to take off today, the demand for sand and gravel aggregates is naturally increasing; river sand can no longer meet the construction requirements of my country's rapid development. Every year, my country's infrastructure construction requires hundreds of billions of tons of sand, resulting in the phenomenon of "green mountains hanging white and rivers turning yellow", which seriously affects the ecological environme...

AI Technical Summary

Problems solved by technology

[0005] Oysters are one of the main varieties of marine culture in my country. In recent years, people's consumption of oysters has been increasing, and the scale of oyster farming has continued to expand. However, a large number of oyster shells, which account for 90% of oysters, are treated as garbage, causing environmental pollution and waste of resources

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