Method for producing energy-saving and environmentally-friendly concrete

Abstract

The invention discloses a method for producing energy-saving and environmentally-friendly concrete. The method comprises the following steps of: weighing the following materials in part by weight: 24 to 143 parts of cement, 11 to 38 parts of fly ash, 57 to 95 parts of ceramic granules, 43 to 100 parts of phosphorous slag sand, 39 to 43 parts of mountain sand and 0.3 to 1.7 parts of polycarboxylic acid type high-efficiency water reducing agent; placing the materials into a stirrer, and stirring the mixture to obtain uniformly-mixed powder; and adding 22 to 54 parts of water in the mixture, and stirring to obtain the uniformly-mixed energy-saving and environmentally-friendly concrete. The method has the advantages that: the energy-saving and environmentally-friendly concrete produced by the method has the characteristics of light weight, good insulating performance, low heat loss, environmental protection, no pollution, anti-permeability superior to that of the common concrete, good fire resistance and good durability; and compared with the common concrete, the energy-saving and environmentally-friendly concrete produced by the method has the advantages of: 1, no alkaline corrosion to steel bars; 2, good frost resistance; 3, good contractibility; and 4, good carbonization resistance.

Description

technical field [0001] The invention relates to a production method of energy-saving and environment-friendly concrete. Background technique [0002] The roof of a building is a load-bearing component and an enclosure component. It not only needs to have the ability to bear the load, but also needs to have the functions of light weight, waterproof, heat insulation, sound insulation, heat preservation, durability and fire prevention. The traditional roof is composed of multiple layers such as waterproof layer, structural layer, thermal insulation layer, and bonding layer. This leads to the phenomenon of water seepage and water leakage on the roof, which seriously affects people's life and work. Therefore, it is an important subject to improve the quality of construction projects to explore new methods of roof waterproofing from the perspective of materials and structures. [0003] Ordinary concrete generally uses ordinary stones, ordinary sand and phosphorus slag as fine ag...

AI Technical Summary

Problems solved by technology

[0004] 1) Its dry bulk density is relatively heavy;

[0005] 2) The thermal insulation performance is not very good, and the heat loss is also relatively large. The specific performance is: the thermal conductivity is generally 0.13-0.44W / m.K; the heat transfer coefficient is 18.32W / m.K; the heat storage rate is 15.36W / m.K, so the The thickness of the body increases, the living area decreases, and the thermal insulation performance is poor

[0006] 3) The impermeability is not very good

[0007] 4) The self-weight is heavy, the elastic modulus is high, and the allowable change performance is small, so the seismic performance is poor;

[0009] 6) Poor durability: there is a certain alkali corrosion to steel bars; taking 20MPa concrete as an example, the strength loss of 200 freeze-thaw cycles is greater than 2%; the shrinkage is poor

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