Construction waste recycled composite admixture based geopolymer concrete

Abstract

The invention discloses construction waste recycled composite admixture based geopolymer concrete which is prepared from the following raw materials in parts by weight: 92 parts of recycled compositeadmixture, 368 parts of fly ash, 1200 parts of a coarse aggregate, 540 parts of a fine aggregate, 133.4 parts of a sodium silicate solution, 21.63 parts of sodium hydroxide and 45.07 parts of water.

Description

technical field [0001] The invention relates to the technical field of construction waste recycling, in particular to construction waste regeneration compound admixture base polymer concrete. Background technique [0002] Concrete is the most widely used and used building material today. Traditional concrete uses cement as the cementitious material. With the development of cities and the massive construction of infrastructure, the demand and output of cement are also increasing year by year. According to statistics from China Cement Network: In 2018, the global cement output was about 3.95 billion tons, and China's cement output was about 2.21 billion tons. However, the production of cement is a high-consumption process. On average, 1 kg of cement consumes 850 kcal of energy, which accounts for about 2-3% of global energy consumption; on average, 1.5 tons of raw materials are consumed for each ton of cement produced. Cement raw materials are indispensable. A renewable res...

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Problems solved by technology

However, at present, the reuse of construction waste is only tens of millions of tons, and its reuse rate is less than 5%. Most of the construction waste is directly transported to the suburbs for open storage or landfill without treatment. garbage dump

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