Biological ash portland cement with low probability of cracking and production method of biological ash portland cement

Abstract

The invention discloses biological ash portland cement with low probability of cracking and a production method of the biological ash portland cement. The biological ash portland cement is prepared from the following components by weight percent: 55-75% of ordinary Portland cement clinker, 4-8% of flue gas desulfurization gypsum, 4.5-10.0% of humus, 7-15% of biological ash, 1-3% of polyvinyl alcohol, 5-10% of gravel powder, 5-8% of zeolite powder and 0.2-1.0% of a biological bacterium additive. The biological ash portland cement can permeate into fine seams among cement seams, stratum and a sleeve joint, has favorable cement squeezing, leakage stopping and tiny gap filling functions for easy-to-leak layers, vertically fractured stratum or porous stratum, and meets the actual application demands; and the compactness and the strength of cement paste are enhanced, and the cement paste based on biological ash is a very good culture medium of biological bacteria.

Description

technical field [0001] The invention relates to the technical field of Portland cement, in particular to a biological ash Portland cement which is not easy to crack and a production method thereof. Background technique [0002] In my country, with the recycling of renewable energy being paid more and more attention by the whole society, biomass (mainly crop straw, etc.) has been rapidly promoted as a fuel for thermal power generation instead of traditional coal, while the remaining biomass fuel in power plants The ash has become one of the industrial wastes whose discharge volume is increasing year by year in our country. These remaining ash not only pollute the environment, but also waste resources if not utilized. The field of cement production has the characteristics of a large number of additives and a wide variety of materials. Generally, there are various fly ash, volcanic ash, silica fume, slag and other materials, but it has not been seen to use bioash as an admixture...

AI Technical Summary

Problems solved by technology

[0002] In my country, with the recycling of renewable energy being paid more and more attention by the whole society, biomass (mainly crop straw, etc.) has been rapidly promoted as a fuel for thermal power generation instead of traditional coal, while the remaining biomass fuel in power plants Ash has become one of the industrial wastes with increasing discharge in our country. The remaining ash not only pollutes the environment, but also wastes resources if it is not used.

The field of cement production has the characteristics of a large number of additives and a wide variety of materials. Generally, there are various fly ash, volcanic ash, silica fume, slag and other materials, but the use of bioash as an admixture has not been seen.

[0003] Therefore, if the biological ash after burning various cotton stalks, rice husks, orange stalks, reed stalks, wood stalks, and bamboo branches and leaves can be applied to the preparation of cement, it will solve the problems of high cement cost and poor crack resistance in the prior art. , The lack of easy cracking of cement is of great significance

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