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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: 2009-07-29
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 deionized water, made into 0.01mol / L calcium ion solution; then accurately weighed 0.040g NaOH, dissolved in 50ml deionized water, made into 0.01mol / L hydroxide ion solution; 10ml of the solution was slowly added dropwise to 500ml of deionized water, and kept stirring gently to form a supersaturated calcium hydroxide solution, which was filtered to obtain a clear and transparent calcium hydroxide supersaturated solution.

[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 insoluble matter, add water to quantify to 100mL, and obtain pullulan organic template solution.

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

[0021] First wash off the floating dust on the ma...

Embodiment 2

[0027] Same example 1, just do not use ethanol but make cleaning agent with propanol in marble surface cleaning, all detection properties of the result are basically the same as example 1.

Embodiment 3

[0029] Same example 1, just do not use ethanol in marble surface cleaning but use deionized water as cleaning agent, electron microscope SEM observation result shows that the particle tip of the calcium carbonate biomineralization that generates is bigger, and the acid resistance and stain resistance of sample are the same as example 1 Essentially the same, except that biomineralization is less adherent to the basement rock.

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Abstract

A calcium carbonate biomineralization reinforcement method for calcium carbonate stone cultural relics. It first cleans the stone surface with a solvent; Functional groups; then infiltrate with a supersaturated solution of calcium carbonate, calcium carbonate is induced to nucleate and directional crystal growth under the control of functional groups, so that the loose particles of the rock are connected, thereby strengthening and protecting the stone surface. The advantages of the invention: the protective material has the same properties as the base material, and has good compatibility; the appearance, color and feel of the protected stone cultural relics are not changed; the compressive strength, water immersion resistance, acid resistance and stain resistance are improved and enhanced .

Description

technical field [0001] The invention relates to a calcium carbonate biomineralization reinforcement method for loose rocks, which is mainly used for surface layer reinforcement of endangered calcium carbonate stone cultural relics. Background technique [0002] A large number of stone cultural relics left over thousands of years are important records of the civilization history of the Chinese nation, and are valuable physical historical materials and tourism resources. Years of rain, snow, wind and frost have gradually deteriorated the rock surface. Modern industrial pollution and acid rain have accelerated the rate of erosion and damage. The surface structure of some rocks is already very loose, even in a loose state that will fall off powder when touched. It is urgent to take necessary measures. Surface reinforcement treatment to prolong the life of cultural relics. However, there are currently no satisfactory surface reinforcement materials. Inorganic reinforcement mate...

Claims

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Application Information

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