Building material prepared from dredged sand and preparation method thereof

Abstract

The invention discloses a building material prepared from dredged sand and a preparation method thereof. The building material is prepared from the following raw materials in part by weight: 60 to 85 parts of the dredged sand, 5 to 7 parts of quicklime, 2 to 9 parts of fly ash, 2 to 4 parts of shell, 0.2 to 2.2 parts of inorganic fiber and 0.1 to 0.4 part of performance modifier. The building material is prepared by mixing the wastes in the sea and the river, such as the dredging sludge, the shell and the like, and the inorganic fiber in a specific weight ratio and has the advantages of higher tensile strength, achievement of waste utilization and relatively low raw material cost.

Description

technical field [0001] The invention relates to a building material, in particular to a building material prepared from dredged sand and a preparation method thereof, belonging to the technical field of building materials. Background technique [0002] At present, building materials such as crushed stones, bricks (including lime-sand bricks), blocks, and plates commonly used in construction have high compressive strength and low tensile strength, and the tensile strength is only about 10% of the compressive strength, resulting in The advantage of its strong ability to resist pressure cannot be fully utilized, which restricts its application. [0003] On the other hand, a large amount of dredged sand is produced every year due to port construction and waterway dredging in coastal areas. At present, there is no good treatment method for these dredged sands, and most of them are thrown outside. The cost of throwing out is relatively high, about 8-15 yuan per square meter, and ...

AI Technical Summary

Problems solved by technology

[0002] At present, building materials such as crushed stones, bricks (including lime-sand bricks), blocks, and plates commonly used in construction have high compressive strength and low tensile strength, and the tensile strength is only about 10% of the compressive strength, resulting in The advantages of its strong pressure resistance cannot be fully utilized, which restricts its application

[0003] On the other hand, a large amount of dredged sand is produced in the coastal area every year due to port construction and waterway dredging. At present, there is no good treatment method for these dredged sand, and most of them are thrown out.

The cost of throwing outside is relatively high, about 8-15 yuan per square meter, and it will generate a lot of carbon emissions, causing serious environmental pollution

For many coastal and mountainous areas, if the building materials such as crushed stones, bricks, and blocks are transported from other places, the distance is long, the cost is high, and the economy is poor, and long-distance transport will generate a lot of carbon emissions. Pollution of the environment, poor social benefits

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