A method for strengthening and protecting open-air masonry cultural relics based on nanocomposite materials

A technology for nano-composite materials and cultural relics, which is applied in the field of cultural relics protection materials, can solve the problems of few types of applicable substrates, many types of raw materials, and high cost, and achieves the effects of simple preparation and use methods, excellent permeability, and few raw materials.

Active Publication Date: 2022-07-05
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method provided by the invention solves the problems that the existing cultural relic reinforcement materials require many types of raw materials, high cost, complicated preparation process, few types of suitable substrates, insufficient weather resistance of materials, etc., which are not suitable for large-scale production and application, etc.

Method used

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  • A method for strengthening and protecting open-air masonry cultural relics based on nanocomposite materials
  • A method for strengthening and protecting open-air masonry cultural relics based on nanocomposite materials
  • A method for strengthening and protecting open-air masonry cultural relics based on nanocomposite materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Step 1, using nano-SiO 2 Pre-consolidation of stone samples with aqueous dispersions

[0037] 1.1 Weigh 2.00g of nano-SiO with a particle size of 10nm respectively 2 , measure 24.67ml of deionized water, use an ultrasonic disperser to evenly disperse the nanoparticles into deionized water, and configure a pre-reinforcement agent with a concentration of 7.5%;

[0038]1.2 Weigh 2.00g of flocculent cellulose, and evenly cover the cellulose on the surface of the Italian Leccese (Pietra Leccese, limestone, 35-47% porosity) sample surface with a surface area of ​​5 × 2 square centimeters, and then use pipetting The tube will be configured with nano-SiO 2 The dispersion is added dropwise to the powder, which is then wrapped with Parafilm. When the powder is gradually dry, open the sealing film and then dropwise add nano-SiO 2 Dispersions. This step continued for 8 hours until all of the formulated dispersion was used up.

[0039] Step 2. Reinforce the stone sample with a...

Embodiment 2

[0044] Step 1, using nano-SiO 2 The water-based dispersion liquid pre-reinforces the stone sample, and the specific material dosage and operation method are the same as those in Example 1.

[0045] Step 2. Reinforce the stone sample with a mixture of tetraethylorthosilicate and Silo 112

[0046] 2.10 g of tetraethyl orthosilicate and 0.900 g of Silo 112 were weighed and mixed in a beaker, stirred evenly, and configured as a mixed reinforcement liquid with a mass percentage of 70%:30%. After removing the flocculent cellulose powder paste, the mixture was directly added dropwise to the surface of the sample using a pipette, and the reinforcement solution was added every 5 minutes. This step was continued until the reinforcement agent was used up.

[0047] The reinforced samples were placed in a laboratory environment for 30 days and then tested according to EU standard test methods. Drilling tests were carried out on the samples, and the results showed that the mechanical stre...

Embodiment 3

[0049] Step 1, using nano-SiO 2 The water-based dispersion liquid pre-reinforces the stone sample, and the specific material dosage and operation method are the same as those in Example 1.

[0050] Step 2. Reinforce the stone sample with a mixture of tetraethylorthosilicate and Silo 112

[0051] 1.43 g of tetraethyl orthosilicate and 0.075 g of Silo 112 were weighed and mixed in a beaker, stirred evenly, and configured as a mixed reinforcement liquid with a mass percentage of 95%:5%. After removing the flocculent cellulose powder paste, the mixture was directly added dropwise to the surface of the sample using a pipette, and the reinforcement solution was added every 4 minutes. This step was continued until the reinforcement agent was used up.

[0052] The reinforced samples were placed in a laboratory environment for 30 days and then tested according to EU standard test methods. Drilling tests were carried out on the samples, and the results showed that the mechanical stren...

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Abstract

The invention relates to a method for strengthening and protecting open-air masonry cultural relics based on nano-composite materials. 2 After dispersing in deionized water, it was added dropwise to cellulose under the protection of a sealing film, and then the mixture of tetraethyl orthosilicate and Silo 112 was directly added dropwise to the surface of the cultural relics and continued until the substrate was saturated. The whole process does not require extreme conditions such as high temperature and high pressure, and can be carried out in an outdoor environment with high practicability. Due to nano-SiO 2 The water dispersion has excellent permeability and can reach a depth of 2 cm and above, ensuring the deep reinforcement effect. While reinforcing the masonry cultural relics, the substrate is given hydrophobic properties, and the surface water contact angle of the substrate after the reinforcement treatment is greater than 100°. The raw materials used in the present invention have moderate cost, are non-toxic to humans and the environment, and are green and environmentally friendly.

Description

technical field [0001] The invention belongs to the field of cultural relic protection materials and technology, and relates to a method for strengthening and protecting open-air masonry cultural relics based on nano-composite materials. Background technique [0002] Brick and stone cultural relics, including grotto temples, stone statues, cliff stone carvings, archway stone bridges, stone inscriptions, the Great Wall and the ancient city walls of the past dynasties, are widely distributed in my country, and there are a large number of remains. These masonry relics have high historical, artistic and scientific value. They are non-renewable cultural heritages, an important part of my country's historical and cultural heritage, and witnesses to the splendid culture of the Chinese people for thousands of years. However, in fact, because most of the masonry cultural relics are directly exposed to the natural environment, they suffer from various diseases caused by physical facto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/52
CPCC04B41/52C04B41/5035C04B41/4539C04B41/4922C04B41/4961C04B41/4535Y02W30/91
Inventor 曹颐戬王聪玛拉·卡玛依蒂
Owner NORTHWESTERN POLYTECHNICAL UNIV
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