الفهرس 
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Abstract
The present work describes the friction behavior of the grooves introduced in the rubber surface sliding against ceramic as flooring materials. The friction coefficient displayed by sliding of rubber against ceramic tiles under different sliding conditions: dry, water, water/detergent dilution and oily condition is discussed. Besides, the effect of the groove width and depth as well as rubber thickness and hardness on the friction coefficient is investigated.
Based on the experiments carried out in the present work, it was found that at dry sliding, soft rubber slid against ceramic surface showed higher friction coefficient than hard one. The difference might be attributed to the extra deformation offered by soft rubber. The same trend was observed when sliding against ceramics wetted by water. The difference in friction coefficient displayed by hard and soft rubber significantly increased as the load increased. Soft rubber displayed lower friction than hard rubber when sliding against detergent wetted ceramic surfaces. In presence of oil on the sliding surfaces, friction coefficient remarkably increased with increasing applied load for soft rubber. The comparative performance of the tested flooring tiles showed that the groove width had significant effect on friction coefficient values, where as groove width increased the rubber deformation increased and facilitated fluid film to escape from the contact area resulting in an increase in friction coefficient.