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Improving the Skid Resistance and Surface Texture of Asphalt Pavement Using AMIR Compactor Technology- Juniper Publishers

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 Civil Engineering Research Journal- Juniper Publishers Abstract The asphalt compaction process is one of the most important factors affecting long term performance of asphalt pavements. The compaction of asphalt pavements reduces the air voids in the asphalt mixture and repositioning the aggregate particles more closely together in order to create a denser and more effective asphalt mixture. A good compaction provides mechanical stability and resistance to deformation, while reducing the permeability of the mixture and prolonging durability. In practice for decades, the conventional method of compaction of asphalt pavements adopted by the Canadian road agencies encompasses three stages with one specific roller for each stage. Although, this compaction method satisfies the road authority’s requirement of densification, the design objectives of asphalt pavements are rarely met because the pavements deteriorate earlier than the expected design service life. Further, the conventional ...

Investigation of Rice Husk Ash (RHA) as a Supplement in Cement for Building Applications- Juniper Publishers

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 Civil Engineering Research Journal- Juniper Publishers Abstract An investigation of Rice husk ash Pozzolan as a supplement in cement for building applications was carried out. A controlled burning of rice husk ash (RHA) at 5000C produced amorphous Silica (SiO 2 ). The rice husk ash (RHA) was substituted for cement in proportions of 0%, 5%, 10%, 20% and 30% of concrete. The concrete was cured for 7 days, 14 days, 21 days and 28 days respectively. It was observed that 20% replacement of Rice husk ash (RHA) provides the optimum strength. Comparison of mixtures with particle sizes of 600 microns, 425 microns, 300 microns, 212 microns, 150 microns and 75 microns, showed that 75 microns provide the optimum strength. X-ray fluorescence (XRF) analysis was performed to determine the content of various chemical oxides in RHA, which indicated that Mg 0.9%, Si 81.8%, P 5.48%, K 3.19%, Ca 1.80%, Mn 0.417%, Fe 0.782%, Zn 0.140% and Ru 0.270%. X-ray diffraction (XRD) analysis to determine low cr...