Sludge concrete and preparation method thereof

Abstract

The invention discloses sludge concrete and a preparation method thereof. The sludge concrete comprises the following raw materials in parts by weight: 200-296 parts of cement, 172-180 parts of water, 1,030-1,066 parts of stone, 56-75 parts of fly ash, 40-78 parts of mineral powder, 530-680 parts of sand and 4.1-6.5 parts of an admixture as well as 150-180 parts of sludge, wherein the sludge is pumped from natural inland rivers, filtered and stacked, the fineness of the sludge is 0.4-0.6, the fly ash is at II grade, and the admixture is a high-performance intensifier. The sludge concrete adopts the sludge as fine aggregate instead of partial sand, as a result, the compactness and permeability of the concrete are enhanced, the durability of the concrete is improved, the production cost is lowered, and the sludge concrete has higher market popularization value and application prospects.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a mud concrete and a preparation method thereof. Background technique [0002] With the increasing development of national urbanization, the number of construction projects is increasing day by day, and at the same time, the demand for concrete is increasing. Cement concrete requires a large amount of natural resources such as sand and gravel. At present, natural sand is used in most areas of my country. Natural sand resources are a kind of local resources. They are not renewable in a short period of time and require long-distance transportation. The cost is high, and the supply and demand of concrete sand are contradictory. particularly prominent. And the price of sand is getting higher and higher. With the increasing development of basic construction and the needs of environmental protection, natural sand resources are gradually decreasing in many areas of my coun...

AI Technical Summary

Problems solved by technology

[0004] Existing concrete widely uses river sand alone as fine aggregate, and the production cost is relatively high. Of course, there are also some new types of concrete, such as the Chinese patent application number 301310183982.8, which discloses a marine silt concrete. These chlorine compounds are corrosive to steel bars, so this type of concrete can only be used for unreinforced concrete such as road surfaces, cushions, and prefabricated blocks, while a large number of industrial and civil buildings, roads and bridges, etc. Reinforced concrete, prestressed concrete, etc. are widely used, so the application range of marine silt concrete has great limitations