Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Improved expansive soil as well as 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, by mass, 8%-10% of silica fume, 1%-2% of linen fiber and 88%-91% of expansive soil of a soil body needing to be improved, and the improved expansive soil is formed by evenly mixing the silica fume, the linen fiber and the expansive soil. According to the invention, the expansive soil is improved by using the by-product silica fume in large-scale industrial smelting and the natural material linen fiber, so that the engineering cost is saved, and a new improvement method is developed for reducing engineering disasters caused by the expansive soil in combination with the application of the natural material linen fiber. In the improvement process, the linen fibers give full play to the advantage of softness, the fiber reinforcement effect, the reinforcement-soil interface interaction effect and the fiber caking effect are exerted in an embedded, bent and interwoven mode, creep deformation of the soil body in the deformation process is reduced, the strength of the expansive soil can be remarkably improved, meanwhile, the expansion and shrinkage performance of the expansive soil is reduced, and the expansive soil has the good application prospect. And the damage caused by expansion and shrinkage deformation is reduced.
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8％～10％的硅灰，质量百分比为1％～2％的亚麻纤维，质量百分比为88％～91％的所需改良土体的膨胀土，所述改良膨胀土由硅灰、亚麻纤维和膨胀土均匀混合而成。本发明中，利用大工业冶炼中的副产物的硅灰和天然材料亚麻纤维来改良膨胀土，既节约了工程成本，又结合天然材料亚麻纤维的应用，为减少膨胀土引起的工程灾害开拓了一个新的改良方法。在改良过程中，亚麻纤维充分发挥其柔软的优势，以嵌入、弯曲和交织的形式发挥纤维加筋作用、筋土界面相互作用和纤维结块效应，减少了土体在变形过程中的蠕变，能够显著提高膨胀土的强度，同时降低其胀缩性，减少因胀缩变形而发生的破坏。
Improved expansive soil as well as 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, by mass, 8%-10% of silica fume, 1%-2% of linen fiber and 88%-91% of expansive soil of a soil body needing to be improved, and the improved expansive soil is formed by evenly mixing the silica fume, the linen fiber and the expansive soil. According to the invention, the expansive soil is improved by using the by-product silica fume in large-scale industrial smelting and the natural material linen fiber, so that the engineering cost is saved, and a new improvement method is developed for reducing engineering disasters caused by the expansive soil in combination with the application of the natural material linen fiber. In the improvement process, the linen fibers give full play to the advantage of softness, the fiber reinforcement effect, the reinforcement-soil interface interaction effect and the fiber caking effect are exerted in an embedded, bent and interwoven mode, creep deformation of the soil body in the deformation process is reduced, the strength of the expansive soil can be remarkably improved, meanwhile, the expansion and shrinkage performance of the expansive soil is reduced, and the expansive soil has the good application prospect. And the damage caused by expansion and shrinkage deformation is reduced.
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8％～10％的硅灰，质量百分比为1％～2％的亚麻纤维，质量百分比为88％～91％的所需改良土体的膨胀土，所述改良膨胀土由硅灰、亚麻纤维和膨胀土均匀混合而成。本发明中，利用大工业冶炼中的副产物的硅灰和天然材料亚麻纤维来改良膨胀土，既节约了工程成本，又结合天然材料亚麻纤维的应用，为减少膨胀土引起的工程灾害开拓了一个新的改良方法。在改良过程中，亚麻纤维充分发挥其柔软的优势，以嵌入、弯曲和交织的形式发挥纤维加筋作用、筋土界面相互作用和纤维结块效应，减少了土体在变形过程中的蠕变，能够显著提高膨胀土的强度，同时降低其胀缩性，减少因胀缩变形而发生的破坏。
Improved expansive soil as well as 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
HUANG MANJIE (Autor:in) / SUN SHULIN (Autor:in) / LI SIYUAN (Autor:in) / JIANG BAOLUO (Autor:in)
01.03.2022
Patent
Elektronische Ressource
Chinesisch
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