1. Experimental Study on High-Bonding Acrylic-polymer Waterproofing Materials.
- Author
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Dong Yan, Shuai Cheng, Xuedang Xiao, Lei Zhang, and Inchen Chen
- Subjects
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ACRYLIC coatings , *WATER pressure , *WATERPROOFING , *ACRYLIC compounds , *BOND strengths - Abstract
Acrylic waterproofing materials are known for their excellent physical properties, waterproofing capabilities, and convenient construction, but their high cost and under-researched bonding strength pose challenges. To enhance adhesion and elucidate the imperviousness mechanism of engineering waterproofing materials while effectively controlling costs, this study proposed the compounding of acrylic ester polymer emulsion with low-cost styrene-acrylate copolymer emulsion for the preparation of waterproofing materials. By integrating theoretical analysis with experimental research, the physical and mechanical properties, as well as the imperviousness of the waterproofing materials, were investigated. The optimal mix-ratio design for the waterproofing materials was determined. Results demonstrate that, (1) The compounding of styrene-acrylic emulsion with pure-acrylic emulsion can achieve good performance while lowering costs. (2) The common silicate cement strength 42.5MPa (C42.5) had better comprehensive properties than the common silicate cements strength 32.5MPa (C32.5) and 52.5MPa (C52.5) and the rapid-hardening sulfate-aluminate cement. (3) In the imperviousness and bonding-strength tests of the coating, when the waterborne non-silicone defoamer was added at 0.3%, it was dense inside the coating with reduced microspaces, and the coating passed the imperviousness test after 30 min under a water pressure of 0.3 MPa. (4) The bonding strength with cement-based surfaces was 1.8 MPa. This study can serve as a good reference for research on high-bonding waterproofing coatings of acrylic acid for underground engineering applications and imperviousness-performance tests. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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