Tabia as well as preparation method and application thereof

Abstract

The invention discloses tabia as well as a preparation method and application thereof. The tabia is prepared from lime, clay, sand, soybean urease, urea, calcium chloride and water. The preparation method of the tabia comprises the following steps: (1) extracting urease from soybeans, and preparing a urease solution; (2) preparing a urea solution and a calcium chloride solution; (3) mixing the lime, the clay and the sand in proportion, and conducting uniform stirring to obtain a mixed material; and (4) adding the urease solution, the urea solution and the calcium chloride solution into the mixed material in proportion, controlling a water content, and conducting curing to obtain the tabia. The tabia can be applied to cultural relic protection, historic building restoration and geotechnical engineering. According to the tabia disclosed by the invention, the permeability and the penetration depth of a to-be-repaired ancient building are improved; and unconfined compressive strength, surface hardness and weather resistance are improved. The preparation method is simple in process step, easy to operate, environment-friendly in raw material and free of pollution. The invention provides wider application scenes for the tabia.

Description

technical field [0001] The invention relates to the field of preparation of building materials, in particular to a composite clay and its preparation method and application. Background technique [0002] Sanhe clay is a major invention of ancient Chinese science and technology. Its raw materials are simple, easy to get locally, and the soil made of it is firm. It is a common building material in ancient times. Sanhe soil can be seen in many ancient buildings that have been preserved today, such as Tongwan City Site, Fujian Tulou, Dagukou Fort, etc. Due to a long history, natural disasters or human factors, ancient buildings made of composite clay have problems such as external wall flashing, case falling off or collapsing. [0003] When repairing ancient buildings, if you want to use modern building materials, such as silicate reinforcement materials, they can only strengthen and harden the surface of the building, and the penetration depth is poor; epoxy resin materials co...

AI Technical Summary

Problems solved by technology

[0003] When repairing ancient buildings, if you want to use modern building materials, such as silicate reinforcement materials, they can only strengthen and harden the surface of the building, and the penetration depth is poor; epoxy resin materials contain hydroxyl groups, Polar genes such as ether bonds and amino groups have excellent adhesion, but also have poor penetration, and are only suitable for the reinforcement of cultural relics with large pores, and epoxy resin is prone to photoaging and yellowing, which seriously affects the appearance of cultural relics

However, if the traditional composite soil is used for repair, there are problems of slow curing rate and low strength of the repaired building.

Images