A kind of titanium gypsum-based semi-rigid base material and preparation method thereof

Abstract

The invention relates to the field of building materials, in particular to a titanium gypsum-based semi-rigid base material and a preparation method thereof, comprising the following components: original titanium gypsum, cement, fly ash, mineral powder, recycled aggregate, water, and an excitation activator , viscosity reducing dispersant; wherein the excitation activator includes the following components: quicklime, calcium acrylate, magnesium fluorosilicate, alunite, sodium tripolyphosphate, potassium sulfate, sodium metaaluminate, and the viscosity reducing dispersant is grafted cis-butyl Polytetrafluoroethylene of olefinic anhydride. The semi-rigid base material of the present invention meets the strength requirements of the road pavement base, and the original titanium gypsum is added in a large amount, which can consume a large amount of the original titanium gypsum and reduce pollution, and the industrial by-product titanium gypsum is added in its original state without drying, calcination, dehydration and powder. Grinding and other processes also protect ecological resources and have a wide range of social benefits, obvious economic benefits, and ecological and environmental benefits.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a titanium gypsum-based semi-rigid base material and a preparation method thereof. Background technique [0002] When the sulfuric acid method is used to produce titanium dioxide, a large amount of CaSO will be produced by neutralizing waste sulfuric acid. 4 ·2H 2 O, after removing water, it will produce red-yellow industrial solid waste titanium gypsum. At present, most of the disposal of titanium gypsum is stored in the open air, and only a small part is applied to cement, roadbed backfill, building materials and other fields. [0003] Domestic industrial gypsum is mainly used in two aspects: first, it is used as a setting material in cement production after modification, granulation, drying and other processes; the second is to produce hemihydrate gypsum through processes such as modification, calcination, dehydration and grinding powder, and then use it as a raw material ...

AI Technical Summary

Problems solved by technology

[0005] Although the aforementioned two approaches have utilized increasing industrial gypsum to a certain extent, the cost of utilization is high, even surpassing natural gypsum. For the latter approach, due to the differences in the physical and chemical properties of various industrial gypsums, the produced The performance of gypsum building material products is often unstable, and there is a certain gap between the performance of natural gypsum products, and the economic benefits are not obvious

At the same time, a large amount of earth and stone is required for roadbed filling and pavement base in road construction, which not only consumes land resources, but also damages the environment and ecology

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