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Calcium carbonate biomineralization reinforcing method for calcium carbonate type stone cultural relics

A technology for biomineralization and stone cultural relics, applied in the field of calcium carbonate biomineralization reinforcement, can solve problems such as unsatisfactory long-term effects, reduce porosity and unevenness, no environmental pollution, and good compatibility Effect

Inactive Publication Date: 2008-03-12
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Despite the advantages of organic polymers, the long-term effect of reinforcement is still unsatisfactory

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Solution preparation

[0018] Calcium hydroxide supersaturated solution: accurately weigh CaCl 2 0.055g, dissolved in 50ml of deionized water to form a 0.01mol / L calcium ion solution; then accurately weigh out 0.040g of NaOH and dissolve in 50ml of deionized water to form a 0.01mol / L hydroxide ion solution; take each of the above 10ml of the solution was slowly added dropwise to 500ml of deionized water, and continuously stirred gently to prepare a supersaturated calcium hydroxide solution. After filtration, a clear and transparent calcium hydroxide supersaturated solution was obtained.

[0019] Organic template solution: Weigh 3g of pullulan, put it into a 250mL beaker, add 100mL of water, heat and boil for 6 hours, filter to remove insolubles, add water to quantify to 100mL, and obtain a pullulan organic template solution.

[0020] (2) Preparation of calcium carbonate biomineralization reinforcement layer on the surface of calcium carbonate loose rocks

[0021] First ...

Embodiment 2

[0027] The same as Example 1, except that ethanol is not used as the cleaning agent in the marble surface cleaning, and all the detection performance is basically the same as that of Example 1.

Embodiment 3

[0029] Same as Example 1, except that ethanol was not used in the cleaning of the marble surface but deionized water was used as the cleaning agent. The SEM observation results showed that the particles of calcium carbonate biomineralization produced were larger. The acid resistance and stain resistance of the sample were the same as those of Example 1. Basically the same, except that the adhesion of the biomineralization to the base rock is reduced.

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Abstract

The present invention discloses a calcium carbonate biological mineralizing and strengthening method for calcium carbonate stone cultural relic. The technical process of the present invention is that: the solvent is first used for cleaning the surface of the stone cultural relic; and then the present invention uses a compound solution with biological amphipathic function as a organic molding board to pretreat the surface of the stone cultural relic and to make the surface of the stone add with a functional group unit; the supersaturation solution of calcium carbonate is used for making with infiltration treatment; under the control of the functional group unit, the calcium carbonate is inducted to grow into core directional crystal; the rocked and incompact grain can be connected so as to make the strengthened protection for the surface of the stone material. The present invention has the advantages of similar property between the protective material and the base material, much better compatibility; the present invention does not change the appearance, color and hand feeling of the protected stone cultural relic; and the compression strength, water resistance, acidity resistance and soiling resistance are improved and enhanced greatly.

Description

Technical field [0001] The invention relates to a calcium carbonate biological mineralization reinforcement method for loose rocks, which is mainly used for surface reinforcement of endangered calcium carbonate stone cultural relics. Background technique [0002] A large number of stone cultural relics survived over thousands of years are important records of the civilization history of the Chinese nation, and are precious historical materials and tourism resources. Years of rain, snow, wind and frost have gradually deteriorated the surface of the rock. Modern industrial pollution and acid rain have accelerated the rate of erosion and destruction. The surface structure of some rocks has been very loose, even in a loose state where the powder can be touched. It is urgent to take necessary measures. The surface layer is reinforced to extend the life of cultural relics. However, there is currently no satisfactory surface reinforcement material. Inorganic reinforcement materials were...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/45C04B41/50
Inventor 张秉坚刘强梁哓林
Owner ZHEJIANG UNIV
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