Alkali-activated concrete for sewage pipeline

Abstract

The invention provides alkali-activated concrete for a sewage pipeline and a preparation method of the alkali-activated concrete, and the concrete material comprises the following raw materials in parts by weight: 45-75 parts of slag, 10-15 parts of silica fume, 6-12 parts of metakaolin, 5-10 parts of fly ash, 40-50 parts of water, 35-45 parts of an alkali activator, 0.25-0.5 part of an additive,0.5-1 part of fibers, 100-150 parts of fine aggregate and 75-125 parts of coarse aggregate. The anti-permeability and durability of the concrete can be remarkably improved, so that the concrete has relatively good sulfate corrosion resistance.

Description

technical field [0001] The invention relates to the preparation of an alkali excitation material, in particular to the preparation of an alkali excitation material used in sewage pipelines, and belongs to the field of building materials. Background technique [0002] Urban sewage pipes are important infrastructures that play a vital role in urban ecological security and social production development. In recent years, with the rapid development of social economy and the continuous acceleration of urbanization, urban water consumption and sewage discharge have continued to increase, and the composition of sewage has become more complex, which will undoubtedly aggravate the sewage corrosion of pipeline concrete, and in the construction of urban environmental engineering Most of them use concrete as raw material for the processing of underground sewage pipelines. Because they are in the buried closed or semi-closed form, and are subject to various corrosion effects such as acid ...

AI Technical Summary

Problems solved by technology

In recent years, with the rapid development of social economy and the continuous acceleration of urbanization, urban water consumption and sewage discharge have continued to increase, and the composition of sewage has become more complex, which will undoubtedly aggravate the sewage corrosion of pipeline concrete, and in the construction of urban environmental engineering Most of them use concrete as raw material for the processing of underground sewage pipelines. Because they are in the buried closed or semi-closed form, and they are subjected to various corrosion effects such as acid and alkali, atmosphere, erosion, and microorganisms for a long time, they will cause damage to the concrete structure, and then Affect the service life of the sewer pipe

Because the sewage pipeline is buried underground, its durability is often ignored by people. If it is not paid attention to, it will bring huge social and economic losses and ecological environment pollution.

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