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Permeation type hydraulic stone cultural relics reinforcing material and reinforcing method

A technology for reinforcing materials and stone cultural relics, which is applied in the field of cultural relics protection, can solve the problems of salt crystal damage, affecting the permeability of protective materials, and weak reinforcement effect, and achieves the effect of low price, excellent permeability and good compatibility

Inactive Publication Date: 2009-01-14
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The problem of soluble salts. In osmotic water-based protective agents, inorganic materials are often introduced in the form of salts, so it is difficult to avoid bringing in soluble salts, which will cause damage to salt crystals;
[0004] 2. The problem of reinforcement strength. Due to the solvation of water, after the inorganic substance solution penetrates into the micropores of the rock, what is precipitated is often a powdery substance, and the reinforcement effect is not strong;
[0005] 3. The problem of permeability. In order to reduce the harm of soluble salts, insoluble or slightly soluble inorganic substances are often used. In this way, many inorganic protective materials can only be made into paste, which seriously affects the permeability of protective materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Solution configuration: weigh 5.1g phosphorus pentoxide, 0.17g butyl titanate, and prepare 50ml A alcohol solution with ethanol as solvent; weigh 3.0g trimethyl aluminate, 0.18g acrylic acid, and use ethanol as solvent The solvent is prepared into 50ml B alcohol solution; weigh 0.53g calcium oxide, and use ethylene glycol as solvent to prepare 75ml C alcohol solution. Mix the three solutions and ultrasonically disperse for 15 minutes under airtight conditions. The mixed solution was used within 1 hour.

[0028] (2) Reinforcement strength test: Accurately weigh 75g of granular calcium carbonate (100-mesh sieve) and 75g of powdered calcium carbonate (1000-mesh sieve), mix well, add 15ml of water, and continue to fully mix. move in In a 39.8mm×80mm stainless steel compaction mold, a 566g compaction hammer with a height of 277mm was compacted 50 times. After demoulding, it was naturally dried to obtain a formed loose rock imitation sample, that is, a blank imitation ...

Embodiment 2

[0033]Same as in Example 1, except that 15ml of the prepared mixed solution was infiltrated into the imitation sample of blank loose rock by means of dropwise infiltration to obtain an infiltration-strengthened sample. After 7 days, the compressive strength of the osmotic reinforced sample was about 8 times higher than that of the blank sample, and it did not disintegrate after soaking in water for more than 15 days. Profile testing found that the penetration depth of the mixed solution was similar to that of pure water, but the penetration rate was about 2 / 3 of that of pure water. It shows that the penetration reinforcement method is feasible.

Embodiment 3

[0035] Same as Example 2, except that the C alcohol solution is first infiltrated into the blank loose rock imitation sample, and then the mixed solution of A alcohol solution and B alcohol solution is infiltrated, the ratio of each substance is the same as in Example 1, and the volume of the total infiltration solution is still 15ml . As a result, the compressive strength of the obtained infiltration-strengthened sample was lower than that of Example 2.

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PUM

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Abstract

Disclosed is a permeation type hydraulicity stone cultural relic reinforcing material as well as a reinforcing method thereof. The reinforcing material is a solution with main compositions of phosphorus and aluminum prepared by taking alcohols as solvents, the solution containing phosphorus and aluminum impregnates into rock micro-pores and produces gelatification along with the volatilization of solvents and water inlet in air. An inorganic sticky matter having the main composition of aluminum dihydrogen phosphate is generated, so as to glue micro-particles and micro-cracks of deteriorated rock and achieve the purpose of reinforcing endangered stone cultural relics. The reinforcing material has advantages of easy taking of materials, mild preparation conditions, simple and convenient using method, strong permeability, good compatibility with rock, obvious reinforcing effect, soaking resistance and environmental protection.

Description

technical field [0001] The invention belongs to the technical field of cultural relic protection, and in particular relates to a permeable hydraulic stone cultural relic reinforcement material and a reinforcement method thereof. Background technique [0002] my country has a long history, and many stone cultural relics are in an endangered state, and there is an urgent need for protective materials with excellent performance for reinforcement and protection. At present, most commonly used protective materials are organic materials, such as epoxy resins, acrylic esters, siloxanes, and the like. Patent CN101186766 uses amphiphilic fluorine-containing organic compounds, and patent CN1840551A discloses an acrylate-organosilicon-epoxy resin reinforcement material. These reinforcement materials form a network structure dominated by organic substances through cross-linking reactions, and have good reinforcement strength. Although there are many advantages, there are also many dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/45
Inventor 张秉坚潘昌初
Owner ZHEJIANG UNIV
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