Earthen archaeological site protection material and preparation method thereof

A technology for protecting materials and soil sites, applied in the field of soil site protection materials and their preparation, can solve the problems of incompatibility between materials and soil sites, unsatisfactory reinforcement effect, limited protection time, etc. The protection effect is improved and the effect of avoiding weathering damage

Inactive Publication Date: 2021-10-29
XUZHOU NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the long history, earthen ruins suffered from salt damage, water damage, and the impact of climate and environment changes, and there were diseases such as brittleness, pulverization, and collapse, which urgently needed reinforcement and protection
[0003] At present, the protective materials for earthen ruins are mainly divided into organic materials and inorganic materials. The reinforcement effect of organic polymer materials is remarkable. It is difficult to remove after degradation, and it is easy to cause secondary damage to cultural relics; inorganic materials have problems such as poor permeability, poor adhesion, and unsatisfactory reinforcement effects
[0004] In recent years, enzyme-induced calcium carbonate precipitation (EICP) technology has emerged. It mainly uses enzymes to hydrolyze urea to produce carbonate ions, and then combines with exogenous calcium ions to generate calcium carbonate to play a role in reinforcement. However, due to the lack of nucleation sites point, the produced calcium carbonate is free, and the reinforcement effect is not good

Method used

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  • Earthen archaeological site protection material and preparation method thereof
  • Earthen archaeological site protection material and preparation method thereof
  • Earthen archaeological site protection material and preparation method thereof

Examples

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preparation example Construction

[0022] A method for preparing earthen site protection materials, comprising the steps of:

[0023] 1) Grinding the dried soybeans with a grinder, and passing the crushed soybean powder through a 100-140 mesh steel sieve;

[0024] 2) adding the sieved soybean powder obtained in step 1) into distilled water to prepare a solution with a soybean powder concentration of 50-70 g / L, and placing the solution in a conical flask to seal;

[0025] 3) Place the soy flour solution obtained in step 2) in a gyratory shaker for 2.5-3.5 hours, then refrigerate in a refrigerator for 0.8-1.2 hours;

[0026] 4) Use a centrifuge to centrifuge the soy flour solution after standing, the centrifugal speed is 4000-5000r / min, the centrifugation time is 12-17min, and the obtained supernatant is the urease solution;

[0027] 5) the urease solution obtained in step 4) is mixed with urea solution, calcium chloride solution and sucrose according to a mass ratio of 10:5:5:1 to obtain the protection material...

Embodiment

[0030] Taking the traditional sanhe soil site in my country as an example, a batch of traditional sanhe soil samples were prepared. The preparation process is as follows:

[0031] 1) Crush the clay, soak it in water, remove floating impurities on the water surface, change the water every day until the pH value of the aqueous solution is neutral, air-dry the soil naturally, crush the air-dried clay, and pass through a 35-mesh sieve to obtain the experimental soil;

[0032] 2) Pass the sand through 18-mesh and 35-mesh sieves in turn, and take the intermediate sand samples of 18 and 35 mesh sieves as the sand for experiment;

[0033] 3) Mix lime, clay and sand according to the volume ratio of 1:2:4, add distilled water, stir and mix thoroughly, so that the moisture content of the soil sample is 16% to 18%, and use a tamping rod on a 40mm×40mm×40mm steel The mold was made to tamp the soil sample, and then the mold was demoulded to obtain a composite soil sample.

[0034] The trad...

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Abstract

The invention provides an earthen archaeological site protection material and a preparation method thereof. The material comprises a plant source urease solution, a urea solution, a calcium chloride solution and cane sugar; the plant source urease solution, the urea solution, the calcium chloride solution and the cane sugar are mixed according to the mass ratio of 10: 5: 5: 1. Sucrose modifying enzyme is added into the components to induce calcium carbonate precipitation, so that on one hand, a nucleation site is provided for the generated calcium carbonate and is used as an organic template for regulating and controlling the growth of the calcium carbonate, and the structure of the calcium carbonate is more compact; on the other hand, the sucrose has a certainviscidity, the sucrose contains hydroxyl functional groups which are coordinated with calcium ions in the solution, so that the curing protection effect is remarkably improved, the compatibility of the material with a soil body is good, and the surface hardness, the salt corrosion resistance, the weather resistance and the water repellency of the soil body are remarkably improved; and the preparation process is simple, green and environment-friendly, carbon dioxide in air can be absorbed to accelerate solidification of the soil body, and the greenhouse effect is relieved.

Description

technical field [0001] The invention relates to an earthen site protection material and a preparation method thereof, belonging to the technical field of earthen site protection. Background technique [0002] Our country has a splendid history and culture, and has left many historical relics. The earthen ruins are an important cultural relic resource, such as the Wancheng ruins, the Jinsha ruins, and the Liye ruins. An important basis for examining ancient civilizations. However, due to its long history, the earthen ruins suffered from salt damage, water damage, and the impact of climate and environment changes, and there were diseases such as brittleness, pulverization, and collapse, which urgently needed reinforcement and protection. [0003] At present, the protective materials for earthen ruins are mainly divided into organic materials and inorganic materials. The reinforcement effect of organic polymer materials is remarkable. It is difficult to remove after degradati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/61
CPCC04B41/61C04B41/5012C04B41/4807C04B41/46C04B41/4535
Inventor 董瑾刘效彬
Owner XUZHOU NORMAL UNIVERSITY
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