Study on the Influence of Polypropylene Fiber and SBR latex on the Mechanical Properties of Rubber Mortar and Microstructures analyzed

摘要

This paper presents a study on the mechanical properties of rubber mortar with the inclusion SBRL (butylbenzene latex) and PP (polypropylene) fiber and the microstructures of SBR latex modified mortar were analyzed. The results proved for specimens with 20 vol.% of rubber, when the P/C of SBR latex was 10%, the compressive and flexural strength of SBR latex modified rubber mortar was optimal. Besides, for specimens with 20 vol.% of rubber, the compressive and flexural strength of SBR latex and polypropylene fiber modified rubber mortar increased with the inclusion of polypropylene fiber, especially when the P/C of SBR latex was 10%. Through scanning electron microscope (SEM), it was founded that polymer has formed a consecutive reticulate film which has a toughening effect on cement matrix.