MODIFIED MARSHAL CHARACTERISTIC OF DENSE GRADED ASPHALT EMULSTON MTXES

• Main Author: Subroto (NIM :269 95 012), Sigit
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/9258
• Institution: Institut Teknologi Bandung

Abstract: <br /> <br /> <br /> <br /> <br /> Growth in the use of asphalt emulsions was rolativcly slow, and limited by thc type of ,asphalt emulsions available and a lack of knowledge as to how they shuld be used. continuing equipment of new types and grades of asphalt emulsion, ooupled with improved construction equipment and practices now give a broad range of choices, with which virtually any roadway requiremeilL can be meL. Judicious seiec;Lion and use of an appropriate asphalt emulsion can yield significant economic profits. <br /> <br /> <br /> <br /> <br /> This thesis describes an investigation of the oharacteristirs of an asphalt emulsion mix comprising a dense graded aggregate and a slow-setting cationic emulsion. The Marshall procedure was modified to evaluate the strength and deformation characteristics, of Lhe mix; samples were Lested in the dry condition at 35farenheit C. The influence of curing period on these two parameters was also asscsscd. <br /> <br /> <br /> <br /> <br /> Preliminary tests showed that the aggregate and emulsion were compatihle and indicated a suitable premix water content. Tests indicated that there is an optimum compaction water content tor maximum modified Marshall stability, and this parameter is a function of curing period. Measurement of strengLh and deformation made on specimens prepared at various asphalt emulsion contents indicated the following trends : <br /> <br /> <br /> <br /> <br /> -Modified Marshall stability decreases with increase in residual asphalt content. <br /> <br /> <br /> <br /> <br /> -Dry density decreases with increase in residual asphalt content. <br /> <br /> <br /> <br /> <br /> -The modified Marshall flow generally decreases to a minimum value wiLh increase in residual ctphalL content. <br /> <br /> <br /> <br /> <br /> -At any residual asphalt content, modified Marshall stability, Marshall quotient, and dry density generally increase with increase in curing time. <br />