EFFECT OF REDUCTION IN PRODUCTION TEMPERATURES ON PROPERTIES OF BITUMINOUS MIXES WITH AN ORGANIC WMA ADDITIVE
Journal: International Journal of Engineering Sciences & Research Technology (IJESRT) (Vol.6, No. 2)Publication Date: 2017-03-02
Authors : Ashok Julaganti; Rajan Choudhary; S. S. Porwal; Abhinay Kumar;
Page : 433-442
Keywords : warm mix asphalt; modified binders; production temperature; organic additive;
- EFFECT OF REDUCTION IN PRODUCTION TEMPERATURES ON PROPERTIES OF BITUMINOUS MIXES WITH AN ORGANIC WMA ADDITIVE
- EFFECT OF ZYCOTHERM ADDITIVE ON PERFORMANCE OF NEAT BITUMEN AND BITUMINOUS CONCRETE MIXES
- EFFECT OF USING BANANA FIBRE AND ZEOLITE AS AN ADDITIVE ON THE ENGINEERING PROPERTIES OF BITUMINOUS CONCRETE
- Waste Plastic’s Effect on the Deterioration of Bituminous Mixes in Cold Climates
- Effect of a Complex Plant Additive on Flour Mixes and Wheat Dough
Abstract
Warm m ix a sphalt (WMA) refers to the group of technologies that allow a considerable decrease in production, placement and compaction temperatures of bituminous mixes through the addition of organic additives, chemical additives or foaming processes. The use of modi fied binders in the bituminous courses has become common practice to sustain the high vehicular traffic, climatic variations, and heavy axle loads. This paper presents properties of bituminous concrete (BC) mixes at different additive contents and producti on temperatures for two modified binders (polymer modified, PMB, and crumb rubber modified, CRMB). WMA additive selected in the study belongs to an organic family. Statistical analysis is performed to analyse the effects of individual factors and their int eractions on the test results. Results show that an increase in the additive content improves bulk density and Marshall stability of WMA mixes at all production temperatures. Warm mixes prepared with both binders (PMB and CRMB) were able to satisfy all the requirements set forth by MoRTH specifications of India up to 40°C reduction in production temperatures. Statistical analysis revealed that binder type, additive content, and reduction in production temperature significantly affect properties of BC mixes.
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