A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for solidifying sandy soil
The invention discloses a method for solidifying sandy soil. The method for solidifying the sandy soil comprises the following steps: providing a plant-derived urease solution; fly ash and sandy soil are mixed, and mixed sandy soil is obtained; mixing the plant source urease solution with a first urea solution to obtain a plant source urease inducer; mixing the calcium chloride solution with the second urea solution to obtain a curing agent; alternately pouring a plant-derived urease inducer and a curing agent into the mixed sandy soil, and carrying out curing treatment to obtain cured sandy soil; wherein the concentration of the first urea solution is not higher than that of the second urea solution. The plant source urease is combined with the fly ash, the fly ash has good adsorbability and can adsorb a large amount of urease, and the urease is promoted to be uniformly distributed in the soil body, so that the uniformity of calcium carbonate crystals in the soil body is improved, and the solidification effect of the sandy soil is effectively improved.
本发明公开了一种固化砂土的方法，所述固化砂土的方法包括以下步骤：提供植物源脲酶液；将粉煤灰和砂土混合，得混合砂土；将所述植物源脲酶液与第一尿素溶液混合，得到植物源脲酶诱导剂；将氯化钙溶液与第二尿素溶液混合，得到固化剂；将植物源脲酶诱导剂和固化剂交替灌入所述混合砂土中，进行固化处理，得固化砂土；其中，所述第一尿素溶液的浓度不高于所述第二尿素溶液的浓度。本发明通过采用植物源脲酶联合粉煤灰，粉煤灰的良好吸附性可以吸附大量的脲酶，促使脲酶均匀分布在土体中，从而提高了碳酸钙结晶在土体中的均匀性，有效提高砂土的固化效果。
Method for solidifying sandy soil
The invention discloses a method for solidifying sandy soil. The method for solidifying the sandy soil comprises the following steps: providing a plant-derived urease solution; fly ash and sandy soil are mixed, and mixed sandy soil is obtained; mixing the plant source urease solution with a first urea solution to obtain a plant source urease inducer; mixing the calcium chloride solution with the second urea solution to obtain a curing agent; alternately pouring a plant-derived urease inducer and a curing agent into the mixed sandy soil, and carrying out curing treatment to obtain cured sandy soil; wherein the concentration of the first urea solution is not higher than that of the second urea solution. The plant source urease is combined with the fly ash, the fly ash has good adsorbability and can adsorb a large amount of urease, and the urease is promoted to be uniformly distributed in the soil body, so that the uniformity of calcium carbonate crystals in the soil body is improved, and the solidification effect of the sandy soil is effectively improved.
本发明公开了一种固化砂土的方法，所述固化砂土的方法包括以下步骤：提供植物源脲酶液；将粉煤灰和砂土混合，得混合砂土；将所述植物源脲酶液与第一尿素溶液混合，得到植物源脲酶诱导剂；将氯化钙溶液与第二尿素溶液混合，得到固化剂；将植物源脲酶诱导剂和固化剂交替灌入所述混合砂土中，进行固化处理，得固化砂土；其中，所述第一尿素溶液的浓度不高于所述第二尿素溶液的浓度。本发明通过采用植物源脲酶联合粉煤灰，粉煤灰的良好吸附性可以吸附大量的脲酶，促使脲酶均匀分布在土体中，从而提高了碳酸钙结晶在土体中的均匀性，有效提高砂土的固化效果。
Method for solidifying sandy soil
一种固化砂土的方法
ZENG CHEN (author) / MA QIANG (author) / ZHENG ZHISHAN (author) / DUAN YUPENG (author) / CHEN WEI (author) / ZHOU XINLONG (author)
2024-04-19
Patent
Electronic Resource
Chinese
Method for solidifying sandy soil through MICP low-pH-value mixed grouting
| European Patent Office | 2021
| European Patent Office | 2021