Research On Adaptability Of Cement Concrete By Organic Fiber

With the developing highway communications,the traffic is increasing and axle is becoming heavier and heavier ,all of these demand the high quality of cement concrete pavement the experience of past ten years in highway construction shows that the practical life time of cement concrete pavement is far more shorter than anticipated.damages such as cracking are offen occurred in first serval years they caused direct and indirect economic losses and bad social influences.in addition to control overloaded vehicles by means of administration,the compressive strength,bending strength wear-ability should be improved to solve all these problems.By far the primary methods to improve the quality of cement concrete is to vary the ratio of differete conpound,but of effection is not evidently the tensile strength and toughness of soil stabilization with Portland cement mixed fiber obtained is higher than those of the soil stabilization with Portland cenment.adding polypropylene to cement concrete can increase the conrete pavement performance,improve the flexural fatigue property.The essay researched the compressive strength,bending strength,impact resistance and abrasion resistance of high strength polypropylene fibermesh concrete the mechanism of enhancing the properties of high strengh poloypropylence fibemesh road concrete composite was discussed and analyzed the regression on tensile strengh with Portland cement mixed with fiber was derived using experiment the tensile strength of fiber soil stablization with porland cement was increased with dosage and length of fiber while the former was more effective than the latter test and analysis results indicate that polypropylene fiber can not only reinforce the strength of concrete,but also obviously promote the flexural fatigue life by the great stress the application of polypropylence fiber reinforced concrete in pavement construcion are also introduced.