EXPERIM ENTAL STUDY OF STONE MATRIX ASP HALT WITH COIR FIBER AND PINEAPPLE FIBER
Journal: International Journal of Engineering Sciences & Research Technology (IJESRT) (Vol.5, No. 11)Publication Date: 2016-11-30
Authors : M.Satyavathi; B. Someswara Rao; G.Venkata Rao;
Page : 378-385
Keywords : Draindown; Marshall Stability; Pineapple fiber; C oir fiber; Stone Matrix Asphalt;
Abstract
Stone Matrix Asphalt (SMA) is a gap graded mix which consists of 70−80% coarse aggregate, 8−12% filler, 6.0−7.0% binder, and 0.3 percent fiber. SMA was first used in Europe and later, other countries had adopted the use of SMA for pavements like Germany and US etc. The problem with SMA is drain down during transportation and laying. To reduce the draindown of SMA, stabilizing ad ditives like chemical and natural additives are used. In this present study, the fibers used for Grade - I (MORTH) and Grade - II (IRC) mixes. This research is to check the feasibility of fibers as stabilizing additives in which the flow values and stability v alues were analyzed by performing Marshall Stability test. Various percentages such as 5.5%, 6%, 6.5% and 7% of bitumen are selected for this study. Draindown test is initially performed to find the optimum fibre content and finally to find the optimum bit umen content. The test results for both grade - 1 and grade - 2 mixes by the use of fibres reduced the drain down value and maximum stability value for both grade - 1 and grade - 2 mixes is obtained for coir fibre when compared with pineapple fibre.
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