Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for improving shrinkage cracking performance of cement-based grouting material
The invention discloses a method for improving the shrinkage cracking performance of a cement-based grouting material. The method comprises the following steps of: S1, carrying out a primary base material screening test to obtain a primary base material; S2, carrying out a secondary base material screening test on the basis of the primary base material to obtain a secondary base material; S3, performing a fiber-reinforced modification test on the screened secondary base material, and optimizing the fiber mixing amount to obtain a cement-based grouting dry material; and S4, adding 9-11% by mass of water into the cement-based grouting dry material prepared in the step S3, and uniformly stirring to obtain an improved cement-based grouting material. According to the method, firstly, cement-based grouting base materials are screened through related tests, then different mixing amounts of expanding agents and an optimized amount of fibers are added, and therefore the cement-based grouting material meeting the target performance index is obtained. The engineering technical problems that the cement-based grouting material is poor in early-stage cracking resistance, low in tensile property and the like are solved, the mechanical property and durability of the cement-based grouting material are improved, and the service lives of structures and buildings are prolonged.
本发明公开了一种水泥基灌浆材料收缩开裂性能的改善方法，包括如下步骤：S1.进行一级基材筛选试验获得一级基材；S2.以一级基材为基础进行二级基材筛选试验，获得二级基材；S3.对筛选好的二级基材进行纤维增强改性试验，并优化纤维掺量，获得水泥基灌浆干料；S4.向S3制备好的水泥基灌浆干料中加入质量分数为9～11％的水，搅拌均匀，得到改善后的水泥基灌浆材料。该方法首先通过相关试验筛选水泥基灌浆基材，再加入不同掺量的膨胀剂及优化量的纤维，从而获得满足目标性能指标的水泥基灌浆材料，解决了水泥基灌浆材料早期抗开裂性能差、抗拉性能低等工程技术难题，并提高水泥基灌浆材料的力学性能及耐久性能，延长了构筑物、建筑物的使用寿命。
Method for improving shrinkage cracking performance of cement-based grouting material
The invention discloses a method for improving the shrinkage cracking performance of a cement-based grouting material. The method comprises the following steps of: S1, carrying out a primary base material screening test to obtain a primary base material; S2, carrying out a secondary base material screening test on the basis of the primary base material to obtain a secondary base material; S3, performing a fiber-reinforced modification test on the screened secondary base material, and optimizing the fiber mixing amount to obtain a cement-based grouting dry material; and S4, adding 9-11% by mass of water into the cement-based grouting dry material prepared in the step S3, and uniformly stirring to obtain an improved cement-based grouting material. According to the method, firstly, cement-based grouting base materials are screened through related tests, then different mixing amounts of expanding agents and an optimized amount of fibers are added, and therefore the cement-based grouting material meeting the target performance index is obtained. The engineering technical problems that the cement-based grouting material is poor in early-stage cracking resistance, low in tensile property and the like are solved, the mechanical property and durability of the cement-based grouting material are improved, and the service lives of structures and buildings are prolonged.
本发明公开了一种水泥基灌浆材料收缩开裂性能的改善方法，包括如下步骤：S1.进行一级基材筛选试验获得一级基材；S2.以一级基材为基础进行二级基材筛选试验，获得二级基材；S3.对筛选好的二级基材进行纤维增强改性试验，并优化纤维掺量，获得水泥基灌浆干料；S4.向S3制备好的水泥基灌浆干料中加入质量分数为9～11％的水，搅拌均匀，得到改善后的水泥基灌浆材料。该方法首先通过相关试验筛选水泥基灌浆基材，再加入不同掺量的膨胀剂及优化量的纤维，从而获得满足目标性能指标的水泥基灌浆材料，解决了水泥基灌浆材料早期抗开裂性能差、抗拉性能低等工程技术难题，并提高水泥基灌浆材料的力学性能及耐久性能，延长了构筑物、建筑物的使用寿命。
Method for improving shrinkage cracking performance of cement-based grouting material
一种水泥基灌浆材料收缩开裂性能的改善方法
HE JINGJING (Autor:in) / MA LINGYUN (Autor:in) / LU HAODAN (Autor:in) / DI SHENGJIE (Autor:in) / FAN LIHAO (Autor:in) / WU WENBO (Autor:in)
14.09.2021
Patent
Elektronische Ressource
Chinesisch
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