Pervious concrete and preparation method thereof

Abstract

The invention provides pervious concrete and a preparation method thereof. The pervious concrete is prepared from, in parts by weight, 200-300 parts of cement, 30-80 parts of mineral powder, 30-80 parts of fly ash, 1400-1700 parts of gravel, 1-5 parts of rubber powder, 0.5-5 parts of cellulose and cellulose ether, 0.5-5 parts of starch ether, 3-4 parts of an additive and 57-84 parts of water. The raw materials used in the pervious concrete are common and easy to obtain, the production process is simple, and cellulose/cellulose ether and starch ether are added as thickening and water-retaining agents, so that the produced pervious concrete is suitable for long-distance transportation, high-strength pervious concrete can be prepared while good pervious rate is met, and the pervious concrete is suitable for production of common commercial concrete mixing plants.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a permeable concrete and a preparation method thereof. Background technique [0002] With the continuous progress of the urbanization process, asphalt concrete pavement gradually covers the streets of the city, and urban waterlogging often occurs in cities with a lot of rain, which brings unnecessary losses to urban traffic and people's property safety. How to ensure the normal operation of urban roads in urban waterlogged places is an urgent problem for road builders and material engineers. Pervious concrete is gradually being applied in the research of roadbed materials, and it has obvious effects in solving the problem of road water accumulation. [0003] The difference between permeable concrete and ordinary concrete is that there is no sand or less sand. The cementitious materials, aggregates, admixtures, etc. are mixed according to the mix ratio. Wid...

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Problems solved by technology

[0004] However, pervious concrete has not been widely used so far, which may be related to the following factors. The compressive strength of pervious concrete is generally between C10-C25, and it can only be used as a lightweight road such as a park landscape road; pervious concrete has a higher water consumption than ordinary concrete. Generally, it is easy to lose water during long-distance transportation. During the on-site pressing and forming process, the slurry between the aggregates cannot be well bonded, resulting in a decrease in strength. If the water consumption of the permeable concrete leaves the factory is too much, the slurry will flow Phenomenon, the slurry cannot wrap the aggregate well, and a slight bump during transportation will cause the slurry to settle

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