Production method of foam cement

Abstract

The invention discloses a production method of foam cement including the components: 42.5-grade ordinary portland cement, 30% hydrogen peroxide, sodium nitrite, calcium oxide, sodium chloride, an aluminum powder, sodium thiosulfate, an iron powder, nekal, tartaric acid, triisopropanolamine, ammonium chloride, rosin, bone glue, sodium hydroxide, gypsum, sodium carbonate, a 5% polyvinyl alcohol solution and water with the mass ratio of 1000:21.3:14.2:14.2:14.2:0.01:2.5:1.1:0.5:0.3:3:1.3:2.1:0.14:1.5:1.9:0.1:0.6:238; concrete prepared from the foam cement has the bending tensile strength and stiffness similar to those of ordinary cement concrete, has the ratio of compressive strength to flexural strength decreased compared with ordinary foamed concrete; and the formula saves 20%-30% of cement than ordinary foam cement.

Description

technical field [0001] The invention relates to a cement used in the construction industry, in particular to a foamed cement used for thermal insulation materials. Background technique [0002] In recent years, the national economy has continued to develop rapidly, but economic development must be based on energy, and energy shortage has become the key to restricting the progress of human society. In the report of the 18th National Congress of our country, a new concept of "beautiful China" was put forward, which was widely accepted by all walks of life. Energy saving, emission reduction and energy consumption reduction are the only way to realize "beautiful China". From the current energy consumption situation in my country, building energy consumption accounts for 1 / 3 of the total energy consumption of the society. The largest share of building energy consumption is cooling and heating. The heating energy consumption per square meter of buildings in my country is about t...

AI Technical Summary

Problems solved by technology

[0004] The flexural tensile strength of foamed cement concrete is generally low. In the current mix design of foamed cement concrete, in order to improve the strength and durability of foamed cement concrete, high-performance water reducers and Fly ash, etc., lead to a great increase in its brittleness, and many foamed cement concrete walls with a large surplus in strength have serious brittle damage or even bursting. The foamed cement concrete is on the wall and other engineering structures (especially The service performance of reinforced concrete structures) is far lower than people's expectations. Its bending ratio is high and the toughness is generally low, which leads to the generally low flexural strength and stiffness of concrete, and the insulation boards of buildings are prone to failure. Large cracks, even wall skin falling off, etc.