Modified hydraulic lime based material and preparation method thereof

Abstract

The invention discloses a modified hydraulic lime based material and a preparation method thereof and belongs to the technical field of building materials. The modified hydraulic lime based material comprises components of raw materials in percentage by weight as follows: 40%-80% of hydraulic lime, 5%-50% of ground mineral powder (S95level), 1%-5% of calcium nitrite, 1%-3% of lithium carbonate, 0.5%-2% of sodium gluconate, 0.5%-2% of a viscous resisting agent, 0.5%-2% of an adhesion resisting agent, 1%-3% of a thixotropy resisting agent, 1%-3% of an anti-crack resisting agent and 0.5%-1.5% of a water reducer, wherein the water reducer is an ShiJiXingYuan XY-4 type Qingdao naphthalene water reducer. The preparation method comprises steps as follows: the components are uniformly mixed in proportion and put in a grinding machine to be ground, and a mixture is obtained. The raw materials are easy to obtain, a preparation process is simple, and the modified hydraulic lime based material is simple to cure; compared with ordinary hydraulic lime, the hydraulic lime has higher crush resistance, fracture resistance and adhesion strength, has good water resistance, acid resistance, alkali resistance and ultraviolet resistance and can be well used for repairing work of antiques.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a modified hydraulic lime-based material and a preparation method thereof. Background technique [0002] There are a large number of immovable cultural relics in our country. These immovable cultural relics are often huge in size, and most of them are exposed in the wild. Due to natural weathering, environmental pollution and human factors, coupled with the lack of effective protection, these precious historical relics have been damaged to varying degrees. If effective protection measures are not taken, many cultural relics and historic sites will be gradually destroyed. The restoration of cultural relics requires "repairing the old as old", so most modern materials cannot fully meet the protection needs of such cultural relics. Therefore, the development of high-performance cultural relics protection materials has become one of the important tasks in th...

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Problems solved by technology

In our country, this kind of material has been used in ancient houses or temples thousands of years ago, but the research and application are still relatively lagging behind compared with foreign countries.

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