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, and the titanium gypsum-based semi-rigid base material comprises the following components: undisturbed titanium gypsum, cement, fly ash, mineral powder, recycled aggregate, water, an excitation activator and a viscosity reduction dispersant. Wherein the excitation activator comprises the following components: quick lime, calcium acrylate, magnesium fluosilicate, alunite, sodium tripolyphosphate, potassium sulfate and sodium metaaluminate, and the viscosity reduction dispersant is maleic anhydride grafted polytetrafluoroethylene. The semi-rigid base material meets the strength requirement of a road pavement base, the mixing amount of the undisturbed titanium gypsum is large, a large amount of undisturbed titanium gypsum can be consumed, pollution is reduced, the industrial byproduct titanium gypsum is mixed in an undisturbed mode, processes such as drying, calcination dehydration and grinding are not needed, ecological resources are further protected, and the cost is reduced. The method has wide social benefits and obvious economic benefits and ecological 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

Images