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Effect Of Natural Rubber Compound (NRC)/ Methyl Methacrylate (MMA) Coating On Abrasion And Hardness, Adhesive And Shear Properties For Pavement Surface

Matuphum Phuthotham, Laongdaw Techawinyutham, Rapeephun Dangtungee

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The efficiency of the modify natural rubber (NR) combination with methyl methacrylate (MMA) monomer for pavement surface was studied. The modified coating for pavement surface consisted of MMA resin and natural rubber compound (NRC) at the weight ratio of 70:30, 60:40, 50:50, 40:60 and 30:70, respectively. The effect of rubber in MMA was studied in terms of hardness (shore A and pencil tests), adhesive, abrasion and shear strength. The results showed that hardness (shore A) and adhesion of the compound coating slightly decreased with addition of NRC. Abrasion, hardness pencil tests and shear strength notably reduced as decreasing MMA and increasing NRC concentration. The most optimum sample satisfing the pavement surface standard is M7N3 consisting of MMA:NRC of 70:30.