TITLE SKID RESISTANCE 1.0 INTRODUCTION DOCX

Title	TITLE SKID RESISTANCE 1.0 INTRODUCTION
Author	Acap Moon
Pages	8
File Size	234 KB
File Type	DOCX
Total Downloads	127
Total Views	529

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TITLE SKID RESISTANCE 1.0 INTRODUCTION The skidding resistance is a measure of the friction generated between a pavement surface and vehicle tire. Skidding occurs when the available friction is not enough to react to the forces imposed by a moving vehicle. The available friction depends upon the microtexture and macrotexture of the road surface, the properties of the tire, vehicle speed and weather conditions. The frictional properties of wearing course of a pavement, is a function of the resistance to skidding which relies on pavement surface texture of exposed aggregate. The movement of vehicle at a high speed removes bulk of water from tire and stone interface there by maintaining grip contact on the road surface. This is achieved by the macrotexture of aggregate particles on the road surface. In this laboratory activity students will be exposed to the apparatus and appropriate methods to carry out the skid resistance for the surface pavement. The slipperiness of surface pavement can be measured either in terms of the friction between a freely-spinning wheel and the pavement surface. One of the requirements of surface pavement is skid resistance. With skid resistance it allow better grip between tires and road surface. Most road surface has adequate skid resistance on dry condition compared during the wet condition. The presence of water between tires and road surface reduce the contact area which is needed to create the grip of vehicle tyres. 1.1 OBJECTIVES The objectives of the test is: To determine the skid resistance value of the road pavement surface dry and wet....