Earthen archaeological site crack repairing slurry utilizing original soil as well as preparation and application methods thereof

Abstract

The invention discloses an earthen archaeological site crack repairing slurry utilizing the original soil. The earthen archaeological site crack repairing slurry comprises the following components inpercentage by mass: 50%-55% of earthen archaeological site original soil, 15%-17% of dry fine sand, 28%-34% of water glass with the concentration of 26.6% and 1% of sodium lignin sulfonate. The preparation and use method comprises the following steps: (1) grinding original soil of the earthen site into powder; (2) preparing pure dry fine sand, a 26% sodium silicate aqueous solution, and analytically pure sodium lignin sulfonate; (3) sequentially adding lignin, original soil and fine sand into the sodium silicate aqueous solution, and uniformly stirring; (4) standing an obtained slurry for morethan 1 hour, and releasing bubbles in the slurry after the slurry is uniform; (5) checking the fluidity of the slurry by using a disposable injector, and if the slurry can smoothly pass through a 2mminjector round hole, the fluidity of the slurry is better, and the slurry can be used for repairing thinner cracks; when large cracks are repaired, increasing the proportion of original soil to finesand; and (6) grouting and maintaining for 14-28 days.

Description

technical field [0001] The invention relates to crack repair technology using the original soil of the earth ruins, especially for the rammed earth building made of loess and silt in the northern region, the original soil that has weathered and fallen off can be recycled for crack repair, improving its strength and durability, and reducing artificial bonding The use of materials keeps the original appearance of the earthen site as much as possible. Background technique [0002] There are a large number of earth relics in my country, such as the rammed earth Great Wall and rammed earth buildings. Taking the Great Wall of King Qin Zhao as an example, due to its long history and severe weathering, there are mostly cracks of various causes. If these cracks are not repaired in time, the weathering will be accelerated, causing the rammed earth to crack and collapse. Therefore, it is an important way to protect the cultural relics of the earthen ruins by timely repairing the crac...

AI Technical Summary

Problems solved by technology

This method works well in the short term, but has problems in the long run.

One is that during the anchoring process, it will adversely affect or even destroy the earthen ruins, which is detrimental to the long-term stability of the earthen ruins, and may also accelerate local weathering due to disturbances

The second is that man-made structures are added to the earthen site, which cannot realize the original protection of cultural relics

[0006] 2) A reinforcement method for high-sand content soil sites (CN 105604341 A). This patent is mainly applicable to high-sand content sites. During use, the non-relic soil needs to be washed with water, and mixed with ethyl orthosilicate, ethanol, distilled water, Oxalate, ethanol, etc., the process is complicated, and it is more suitable for sites with high sand content, but not suitable for sites with sticky and weak cohesive soils

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