Evaluation of foamed sulfur asphalt stabilized soils for road applications

被引：19

作者：

Abdullah, Gamil M. S. ^{[1
]}

Wahhab, Hamad I. Al-Abdul ^{[2
]}

机构：

[1] Najran Univ, Dept Civil Engn, Najran, Saudi Arabia

[2] King Fahd Univ Petr & Minerals, Dept Civil Engn, Dhahran 31261, Saudi Arabia

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2015年 / 88卷

关键词：

Foamed sulfur asphalt; Sulfur; Marginal soils; Statistical; Stabilized base;

D O I：

10.1016/j.conbuildmat.2015.04.013

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper summarizes the research carried out to evaluate and compare the performance of marginal soils, namely marl, sabkha and dune sand treated with foamed sulfur asphalt (FSA) with the mixes of the same soils treated with conventional foamed asphalt (FA) for the construction of road bases. FSA and FA mixes were designed for the three soils utilizing low percentage of Portland cement (2%) and were optimized to meet dry and wet indirect tensile strength (ITS) requirements. Designed mixes were evaluated for Marshall stability, static triaxial (shear strength) and dynamic resilient modulus at 22 degrees C. Results indicate that properly designed FSA mixes displayed a significant improvement in ITS (17% for marl and 9.4% for sand soils), Marshall stability (14% for marl and sand soils) and shear strength (135%, 76% and 250% for marl, sabkha and sand soils, respectively) as compared with those of conventional FA mixes. Resilient modulus testing indicated that FSA has marginally reduced the resilient modulus of soils compared with FA Foamed sulfur asphalt technology can be used successfully to construct road bases from available marginal soils. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：149 / 158

页数：10

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