期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2013
卷号：2
期号：9
页码：4500
出版社：S&S Publications
摘要：Thermal power plants or similar plants in India which use pulverised coal as a fuel, generates million tonnesof fly ash every year as a waste. Conventional disposal of this material which gets easily air-borne and constitutes aserious health hazards to the community, is an expensive operation. On the other hand compacted fly ash can be used inembankments, road sub-bases and also for structural fills. The main limitations of such materials are their limited loadcarrying capacity and poor settlement characteristics. The performance of such materials can substantially be improvedby introducing reinforcing element in the direction of tensile strain. Use of natural materials such as Jute, coir andbamboo, as reinforcing materials to fly ash are very cheap and they are locally available in large quantity. They arebiodegradable and hence do not create disposal problem in environment. If these materials are used effectively, therural economy can get uplift and also the cost of construction can be reduced. Of all the natural fibers, coir has thegreatest tearing strength and it retains this property even in wet conditions. Keeping this in view the present study wastaken up. In this study the influence of coir fibers on shear strength parameters (c and ϕ) and stiffness modulus (ϭd /ϵ) offly ash have been investigated. In the present investigation, samples of fly ash compacted to its maximum dry density atthe optimum moisture content were prepared without and with randomly distributed coir fiber for triaxial compressiontests. The coir fiber were taken as 0.25 %, 0.5 %, 0.75 % and 1 % by dry weight of fly ash and the shear strengthparameters (c and ϕ) and stiffness modulus (ϭd /ϵ) of reinforced fly ash for each fiber content was determined in thelaboratory. Finally these strength parameters (c, ϕ and ϭd /ϵ) of reinforced fly ash were compared with that ofunreinforced fly ash. Tests results indicate that on inclusion of coir fiber, the shear strength parameters and stiffnessmodulus of fly ash increases. It was also observed that on increasing the fiber content, the values of these strengthparameters further increases and the improvement is substantial at fiber content of 1 %.Thus there is a significant improvement in the strength parameters of fly ash due to inclusion of coir fiber.
