Method for preparing artificial ecological aggregate by using inland sludge and near-shore high-sand mud

Abstract

The invention provides a method for preparing artificial ecological aggregate by using inland sludge and near-shore high-sand mud. The method comprises the following steps: filtering sludge and high-sand mud to remove large particles with particle diameter being greater than 2 millimeters; naturally withering the filtered sludge and high-sand mud; uniformly mixing the sludge, the high-sand mud, cement, coal ash, quicklime, steel slag, silicon ash, an activator, an early strength agent and water; pelletizing the mixture into balls in a pelletizer; naturally curing finished balls, spraying water for curing, spraying a waterproof coating or an alkaline activation curing agent, and curing naturally. The ecological aggregate which can be applied to planting concrete is mainly prepared from sludge and near-shore high-sand mud, so that natural gravels and cobbles in planting cement are replaced completely or partially, sludge is treated effectively, and environmental problems caused by sludge are solved. Moreover, sludge is turned into a usable resource to be utilized effectively, so that the method has good economical value and social value.

Description

Technical field [0001] The invention belongs to the field of materials, and particularly relates to a method for preparing artificial ecological aggregate by using inland silt and nearshore high sand mud. Background technique [0002] Silt is a flocculent and honeycomb structure formed by the deposition of fine particles such as clay minerals in slow flowing water environments such as oceans or lakes under the action of inter-particle electrostatic force and molecular gravity. At the beginning of the development of industry and agriculture, our country did not pay enough attention to environmental protection. With the further development of industry and agriculture, a large amount of industrial, agricultural and domestic sewage was directly discharged into rivers and lakes without treatment, resulting in damage to the water environment. The pollutants in the sludge settle, and the pollutant content in the sludge increases, making the sludge seriously polluted. The polluted sludg...

AI Technical Summary

Problems solved by technology

However, most of the aggregates in the planting concrete slope protection technology researched and applied at present are natural crushed stones or pebbles, which will inevitably cause a large consumption of natural non-renewable stone resources.