High-strength concrete mixed with low-temperature rice husk ash

Abstract

The invention belongs to the technical field of building materials, and particularly relates to high-strength concrete mixed with low-temperature rice husk ash, which comprises ordinary Portland cement, low-temperature rice husk ash, slag powder, coal powder ash, broken stones, river sand, water and water reducer. The low-temperature rice husk ash is prepared by burning rice husks at the lower temperature (600 DEG C) and grinding the burned rice husks. The specific surface area of nitrogen adsorption measurement of the high-strength concrete is 55-70m2 / g, and the high-strength concrete has ultrahigh pozzolanic activity. By means of the high-strength concrete, the problem of rice husk processing can be solved, and the production cost of the high-strength concrete can be reduced. The high-strength concrete has the advantages of high workability, high strength, rapidity in strength development, mechanical property, durability and the like by being prepared from the ordinary Portland cement serving as cementing materials, the low-temperature rice husk ash, the slag powder and the coal powder ash serving as admixture, and the broken stones and the river sand serving as aggregate and the high-efficiency water reducer. Reusability of the rice husks is effectively realized by the aid of the high-strength concrete so that energy saving, emission reduction and environmental protection are achieved. Besides, production cost of the high-strength concrete can be reduced, and economic returns are improved.

Description

technical field

[0001] The invention belongs to the technical field of building materials, and in particular relates to high-strength concrete mixed with low-temperature rice husk ash. Background technique

[0002] my country is the largest rice producer in the world, producing more than 40 million tons of rice husks every year. The treatment of rice husks in my country, except for a very small part used for fuel, animal feed, filler for wine fermentation and field fertilizer, most of them are treated as agricultural waste or burned in the wild, causing great harm to road traffic safety and environmental quality . At the same time, with the development of my country's modernization construction, the demand for high-strength concrete is increasing. At present, there are some methods to prepare high-strength concrete. However, the raw materials used in the preparation are extremely demanding and the process is complicated. As an engineering material, its cost is too high, wh...

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