An Investigation Of The Strength Properties Of Sand Emulsif Asphalt Mixtures PDF Download

"The objective or this investigation was to determine the optimum percent of asphalt which should be added to the sand asphalt mixture. Also the effects of filler on the properties or the sand-asphalt mixture were evaluated. The variables in this study were mineral filler, asphalt cement, and asphalt content. The sand used in this study was sub-rounded, and uniformly graded. The asphalt was asphalt cement with two different penetrations, one of 85-100 penetration grade and the other of 120-150 penetration grade. Three different groups of mixtures of sand-asphalt were prepared. The first group consisted of adding 85-100 penetration asphalt to a mixture of sand and filler. The second group consisted of adding 85-100 penetration asphalt to sand only. The third group consisted of adding 120-150 penetration asphalt to sand. All mixes were prepared by the Harvard Compaction machine and tested in an unconfined compression machine. The physical properties analyzed were compressive strengths, unit weight and air voids in the mineral aggregate. It was found that an asphalt content of four percent appears to be an optimum percentage for the three groups of mixtures tested. It was found also that filler increased the desirable properties or sand-asphalt mixture"--Abstract, leaf ii.