Construction garbage concrete brick and production process thereof

Abstract

The invention discloses a construction waste concrete brick and a method for making the same. The concrete brick is prepared by mixing the following raw materials: 15 to 35 portions of construction waste concrete, 50 to 70 portions of construction waste brick dust and 10 to 15 portions of cement. The method for making the brick is as follows: construction wastes are sorted and sieved so as to be mixed and stirred with other raw materials; wet basis water content is controlled between 12 and 16 percent; the mixed materials are formed under a pressure of between 15 and 35 MPa; and a formed brick undergoes natural curing or steam curing. The product meets the requirements of the agricultural industry standards of the people's republic of china, i.e. the 'Concrete Common Brick and Decorative Brick' (NY / T671-2003), and the strength of the product can reach to above MU10. The technology ensures that the total use of construction waste reaches to above 85 percent, and has the advantages of no sintering, low energy consumption and no exhaust emission, etc.; moreover, the technology solves the problems of the prior construction waste wall brick process such as low treatment efficiency of construction waste, more raw materials, high cost of a jelling material and poor market applicability; meanwhile, the technology accords with national energy-saving and emission-reduction policies, and has enormous environmental benefit, economic benefit and social benefit.

Description

technical field [0001] The invention belongs to the technical field of resource utilization of construction waste, and in particular relates to a concrete brick produced by using construction waste as a raw material and a production method thereof. Background technique [0002] Along with the rapid development of the construction industry, the construction waste generated by the construction industry has also increased unprecedentedly. my country has 40 billion m 2 Buildings will mostly be converted into construction solid waste in the next 100 years. At present, my country produces more than 300 million tons of construction solid waste annually, and the existing disposal methods are mainly landfill. In addition to the staggering cost of disposal of huge amounts of construction waste, it has also caused many environmental problems and social hazards. [0003] The country is also gradually strengthening the protection of land resources. The price of coal resources continue...

AI Technical Summary

Problems solved by technology

The disadvantage is that the amount of cement is large and the cost is high. In addition, the coarse wet ash discharge raw material requires a coal-fired power plant near the brick factory

[0006] In the Chinese patent document "Building Bricks Prepared Using Construction Waste" (publication number CN101157532, published on April 09, 2008), 65-70 parts of construction waste, 30-35 parts of mixture, additive: sodium rosinate 0.2-0.4 parts, 0.1-0.3 parts of sodium tripolyphosphate dissolved in 6-8 parts of water; the mixture is made of fly ash, slag or gangue 13-16 parts, carbide slag or lime powder 7-9 parts, It is composed of 2.5-4 parts of phosphogypsum or gypsum powder and 7-9 parts of waste clay brick particles. The raw material process is relatively complicated, especially in the mixing of raw materials, it is difficult to control the sieve balance of 180 mesh standard sieve at 40-60%.

[0007] On the whole, in the past construction waste wall brick technology, the construction waste treatment efficiency is low, the number of raw materials is large, the cost of cementitious materials is high, and the market applicability is poor