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Title: Performance of cement modified dense graded cold-mix asphalt and establishing mathematical model
Authors: Oruc, Seref
Celik, Fazil
Aksoy, Atakan
Issue Date: Dec-2006
Publisher: CSIR
IPC CodeC08L95/00
Abstract:  Cold-mix asphalts have several advantages regarding economical, ecological and logistical aspects over hot-mix asphalts. But, cold-mix asphalts have poor performance and are deteriorated in case of additional external water entrance before mixture curing is completed. This study has been focused on to solve these problems and present an alternative to hot mixtures. Cold-mix asphalt specimens with dense graded aggregate were prepared according to Marshall method for emulsified asphalt-aggregate cold mixture design. Portland cement has been substituted for mineral filler in an increased percent, from 0% to 6%. Cold-mix asphalt specimens have been prepared with 4.2%, 5.2% and 6.2% of residual asphalt contents. Indirect tensile test, static and repeated load asphalt creep tests, and water damage test have been performed on the specimens. In addition to these tests, the moisture losses of specimens that took place in time are also measured. Based on the experimental work, it has been concluded that dense graded cement modified emulsion mixtures are of great performance compared to hot mixtures with the same aggregate grading and bitumen content. A mathematical model has also been developed for determining the resilient modulus of cold-mix asphalt.
Page(s): 512-519
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Source:IJEMS Vol.13(6) [December 2006]

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