A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
RUTTING AND MOISTURE SUSCEPTIBILITY ASSESSMENT OF ASPHALT WEARING COURSE GRADATIONS
This research focused the impact of various aggregate gradationson permanent deformation and moisture susceptibility of asphalt concrete mixtures. Fivewearing course of different gradation,namelyNHA-A, NHA-B, SP-1, SP-2 and MS-2,were adopted. Two pavinggradebitumeni.e. 40/50 and 60/70wereused. Hamburg Wheel Tracking Test (HWTT) and Modified Lottmantestwereperformed to assess rutting propensity and moisture damageof asphaltmixtures.The results indicatedthe superior performance ofNRL 40/50binderin HWTTwhile mixes prepared with Parco 60/70showed better resistance against moisture. In HWTT, NHA-A performed well followed by NHA-B and SP-2 while MS-2 and SP-1 failed the minimum rut depth criteria. All the mixtures passed the minimum benchmark for Tensile Strength Ratio (TSR). Aggregate gradation SP-1 given in Superpaveguidelinesprovided greater resistance to moisture damagedue to compact natureofthe blend. Rutting tendencyof the mixtures increased with increasing TSRand decreasing Indirect Tensile Strength (ITS).
RUTTING AND MOISTURE SUSCEPTIBILITY ASSESSMENT OF ASPHALT WEARING COURSE GRADATIONS
This research focused the impact of various aggregate gradationson permanent deformation and moisture susceptibility of asphalt concrete mixtures. Fivewearing course of different gradation,namelyNHA-A, NHA-B, SP-1, SP-2 and MS-2,were adopted. Two pavinggradebitumeni.e. 40/50 and 60/70wereused. Hamburg Wheel Tracking Test (HWTT) and Modified Lottmantestwereperformed to assess rutting propensity and moisture damageof asphaltmixtures.The results indicatedthe superior performance ofNRL 40/50binderin HWTTwhile mixes prepared with Parco 60/70showed better resistance against moisture. In HWTT, NHA-A performed well followed by NHA-B and SP-2 while MS-2 and SP-1 failed the minimum rut depth criteria. All the mixtures passed the minimum benchmark for Tensile Strength Ratio (TSR). Aggregate gradation SP-1 given in Superpaveguidelinesprovided greater resistance to moisture damagedue to compact natureofthe blend. Rutting tendencyof the mixtures increased with increasing TSRand decreasing Indirect Tensile Strength (ITS).
RUTTING AND MOISTURE SUSCEPTIBILITY ASSESSMENT OF ASPHALT WEARING COURSE GRADATIONS
Muhammad Kamran Khan (author) / Arshad Hussain (author)
2019
Article (Journal)
Electronic Resource
Unknown
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