A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Improved expansive soil, and preparation method, construction method and application thereof
The invention relates to improved expansive soil, and a preparation method, a construction method and application thereof. The improved expansive soil comprises 12-16% by mass of lithium slag, 4% by mass of alkali and 80-84% by mass of expansive soil of a to-be-improved soil body, and the improved expansive soil is formed by uniformly mixing the lithium slag, the alkali and the expansive soil. According to the invention, the waste lithium slag is used for improving the expansive soil under the condition of alkali doping, so engineering cost is saved, the lithium slag is reutilized, environmentis protected, and a novel improvement method is developed for reducing engineering disasters caused by expansive soil; the waste lithium slag is added as coarse aggregate to function as a skeleton effect and to improve mixture gradation, and can be uniformly distributed in the expansive soil, so excellent physical performance is obtained and physical improvement is realized; and the improved expansive soil is substantially reduced in expansibility, cracks caused by a dry-wet cycle can be eliminated, water stability can be improved, and strength required by engineering can be met.
本发明涉及一种改良膨胀土及其制备方法、施工方法和应用，改良膨胀土包括质量百分比为12％～16％的锂渣，质量百分比为4％的碱，质量百分比为80％～84％的所需改良土体的膨胀土，改良膨胀土由锂渣、碱和膨胀土均匀混合而成。本发明中，在碱掺入的情况下利用废弃的锂渣来改良膨胀土，既节约了工程成本，又使锂渣得到再利用，保护了环境，又为减少膨胀土引起的工程灾害开拓了一个新的改良方法，废弃的锂渣作为粗骨料添加，可以起到骨架作用，并且还可以改善混合物级配，使得锂渣在膨胀土中均匀分布，具有优良的物理性能，属于物理改良方法，经改良后的膨胀土可以大大减弱其膨胀性，消除干湿循环带来的裂隙，提高了水稳定性，满足工程所需强度。
Improved expansive soil, and preparation method, construction method and application thereof
The invention relates to improved expansive soil, and a preparation method, a construction method and application thereof. The improved expansive soil comprises 12-16% by mass of lithium slag, 4% by mass of alkali and 80-84% by mass of expansive soil of a to-be-improved soil body, and the improved expansive soil is formed by uniformly mixing the lithium slag, the alkali and the expansive soil. According to the invention, the waste lithium slag is used for improving the expansive soil under the condition of alkali doping, so engineering cost is saved, the lithium slag is reutilized, environmentis protected, and a novel improvement method is developed for reducing engineering disasters caused by expansive soil; the waste lithium slag is added as coarse aggregate to function as a skeleton effect and to improve mixture gradation, and can be uniformly distributed in the expansive soil, so excellent physical performance is obtained and physical improvement is realized; and the improved expansive soil is substantially reduced in expansibility, cracks caused by a dry-wet cycle can be eliminated, water stability can be improved, and strength required by engineering can be met.
本发明涉及一种改良膨胀土及其制备方法、施工方法和应用，改良膨胀土包括质量百分比为12％～16％的锂渣，质量百分比为4％的碱，质量百分比为80％～84％的所需改良土体的膨胀土，改良膨胀土由锂渣、碱和膨胀土均匀混合而成。本发明中，在碱掺入的情况下利用废弃的锂渣来改良膨胀土，既节约了工程成本，又使锂渣得到再利用，保护了环境，又为减少膨胀土引起的工程灾害开拓了一个新的改良方法，废弃的锂渣作为粗骨料添加，可以起到骨架作用，并且还可以改善混合物级配，使得锂渣在膨胀土中均匀分布，具有优良的物理性能，属于物理改良方法，经改良后的膨胀土可以大大减弱其膨胀性，消除干湿循环带来的裂隙，提高了水稳定性，满足工程所需强度。
Improved expansive soil, and preparation method, construction method and application thereof
一种改良膨胀土及其制备方法、施工方法和应用
SUN SHULIN (author) / DING WEI (author) / WU SUNXING (author) / LI SIYUAN (author) / YANG TONGZHENG (author)
2020-05-12
Patent
Electronic Resource
Chinese
Improved expansive soil as well as preparation method, construction method and application thereof
| European Patent Office | 2022
Improved expansive soil as well as preparation method and construction method thereof
| European Patent Office | 2023
Preparation method and construction process of improved expansive soil
| European Patent Office | 2022
Improved expansive soil as well as preparation method and application thereof
| European Patent Office | 2023