改性乳胶粉对高韧高黏改性砂浆力学性能的影响研究

打开文本图片集

中图分类号：TU528 文献标志码：A 文章编号：1003-5168（2025）21-0068-05

DOI：10.19968/j.cnki.hnkj.1003-5168.2025.21.013

Abstract： [Purposes] To determine the optimal dosage of modified latex powder for preparing hightoughness and high-adhesion modified mortar，thereby addressing issues such as insufficient early strength and poor bonding performance in traditional mortar.[Methods] VAE-based redispersible latex powder was modified using silane coupling agents to obtain modified latex powder，and its effect on the mechanical properties of modified mortar wasanalyzed.[Findings] The experimental results show that the modification with silane coupling agents enables the modified latex powder to form bridging bonds between organic and inorganic materials，enhancing the compactness of the mortar and thus improving its performance. The 1-day compressive strength and flexural strength reached 36.63 MPa and 4.45 MPa， respectively，and the 14-day split tensile strength reached 2.14 MPa.[Conclusions] The research findings enhance the applicability of modified mortar in engineering practice.

Keywords： modified latex powder; high toughness; high adhesion; modified mortar; mechanical properties

0 引言

近年来，水泥基材料作为交通和建筑等领域的关键工程材料，其重要性愈发凸显。（剩余5151字）