Determining Geotextile Effects on Bearing Capacity Ratio and Cost of Pavement Layers by Conducting CBR Tests

ABSTRACT

In this study, California Bearing Ratio (CBR) tests in a laboratory were performed to observe the effects of geotextiles on bearing capacity ratio, pavement layer thickness, and cost for geotextile reinforced soils. Fourteen geotextile samples, most of which were produced from recycled materials, were used in the experiments. Therefore, physical properties of geotextiles were compared to each other in order to find the most effective type of geotextiles by CBR tests. Then, relationship and adaptation between soil particles and geotextile types were researched by using microscope analyses. Additionally, AASTHO pavement thickness calculations were conducted and cost analysis according to reinforced pavement design were investigated either for reinforced base and for reinforced subbase layers. As a result of the study, it was found that using geotextile can increase CBR behavior, and the bearing capacity ratio values can be more almost 3.5 times than unreinforced models. Each geotextile reinforcement type has a characteristic behavior on the pavement layer and generally, they decrease the pavement thickness and as for long span they can be more economical.

摘要

在本研究中, 在实验室进行了加州承载比 (CBR) 试验, 以观察土工布对土工布加筋土承载力比、路面层厚度和成本的影响. 实验中使用了14个土工布样品, 其中大部分是由回收材料制成的. 因此, 通过CBR试验对土工织物的物理性能进行比较, 以找到最有效的土工织物类型. 然后, 通过显微镜分析研究了土颗粒和土工织物类型之间的关系和适应性. 此外, 根据加筋路面设计, 对加筋基层和加筋底基层进行了AASTHO路面厚度计算和成本分析. 研究结果表明, 使用土工布可以提高CBR性能, 承载力比值几乎是未加筋模型的3.5倍. 每种土工布加筋类型在路面层上都有其特有的性能, 通常, 它们会减少路面厚度, 而且从长远来看, 它们更经济

KEYWORDS:

• Recycled reinforcements
• geotextiles
• cost analysis
• pavement
• CBR

关键词:

• 回收的钢筋
• 土工布
• 成本分析
• 路面

Disclosure statement

No potential conflict of interest was reported by the author(s).