A Laboratory Investigation on the Application of Bitumen Emulsion in Gravel Road
Keywords:
Bitumen Emulsion, Gravel Roads, Stabilization, Laboratory InvestigationAbstract
This paper investigates the potential of utilizing bitumen emulsion in gravel road construction, assessing its feasibility and efficacy through comprehensive laboratory analysis. Mechanical properties, longevity, and environmental impact are evaluated, focusing on rutting resistance, adhesion, cohesiveness, and moisture susceptibility of bitumen-treated gravel mixtures. Results demonstrate significant improvements in engineering characteristics, leading to heightened stability, reduced maintenance needs, and extended service life for gravel roads. Environmental assessments highlight potential sustainability benefits such as carbon emission reduction and natural resource conservation. The study employs medium setting emulsion (MSE) as a stabilizing agent on easily accessible laterite gravel soil. While bitumen's effectiveness for sand stabilization is acknowledged, its application on soil is constrained by cost and standardized protocol limitations. Various tests including the CBR Test and Modified Compaction Test were conducted to enhance soil strength and project stability. The research underscores bitumen emulsion's potential to enhance geotechnical properties while affirming its environmental safety. Crucial laboratory experiments such as the Standard Proctor test and tests for specific gravity, particle size distribution, and material identity were instrumental in optimizing the soil subgrade's CBR value for effective road construction.
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