Open AccessPerformance evaluation of road base stabilized with styrene–butadiene copolymer latex and Portland cement
Author(s) -
Mojtaba Shojaei Baghini,
Amiruddin Ismail,
Seyed Saber Naseralavi,
Ali Akbar Firoozi
Publication year - 2016
Publication title -
international journal of pavement research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 26
eISSN - 1997-1400
pISSN - 1996-6814
DOI - 10.1016/j.ijprt.2016.08.006
Subject(s) - portland cement , materials science , flexural strength , composite material , cement , creep , compressive strength , styrene butadiene , styrene , copolymer , polymer
This study investigated the effects of the addition of a carboxylated styrene–butadiene emulsion (Tylac® 4190) and Portland cement on the long-term performance of road base. To achieve the goals of this study, a literature review, laboratory investigation, and data processing and analyses were accomplished. The specimens stabilized with Portland cement (0–6%) and Tylac® 4190 (5–10%) and subjected to different stress sequences in order to study the unconfined compressive strength, flexural strength, soaked and unsoaked California bearing ratio, dynamic creep, and wheel-tracking characteristics of 7-day-cured specimens. The permanent strain behavior of the samples was assessed by the Zhou three-stage creep model. The results of dynamic creep and wheel-tracking tests showed that the permanent deformation characteristics were considerably improved by the addition of a 4% Portland cement–8% Tylac® 4190 mixture, which resulted in reduction of permanent strain of the mixture. The use of the 4% cement–8% Tylac® 4190 mixture increased the flexural strength by 81.4% and 288.2% as compared to the use of 4% cement and 8% Tylac® 4190, respectively