介绍使用动态锥入度仪 (DCP) 测试的 CBR 估算模型和路面基层的压实特性

IF 0.8 4区材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Journal of Testing and Evaluation Pub Date : 2024-07-01 DOI:10.1520/jte20230157

Mohammad Reza Elyasi, D. Daryaee, Fatemeh Sarabi

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引用次数: 0

摘要

一般来说，任何一种管理决策系统的基础都是对现状的正确评估、对未来的预测以及最终的优化决策。路面评估有多种现场方法，其中包括破坏性和非破坏性方法。动态圆锥贯入仪（DCP）测试是无损检测方法之一。本研究的主要目的是调查使用 DCP 控制路面层质量以及估算加州承载比（CBR）和压实比等参数的可行性。为此，DCP、CBR 测试和密度百分比测定被用作控制路面层质量的参数。动态阻力仪或 DCP 是一种用于快速测量不同路面层阻力的设备。该装置会对路面造成轻微破坏。因此，它也被称为无损检测。不过，要使用 DCP，必须将其结果与 CBR 等普遍和广泛使用的测试结果进行测量，并研究它们之间的关系。本研究在两个地点（一条在建高速公路和一个景观美化项目）进行了 DCP、CBR、密度、筛分分析、含水量和阿特伯格极限测试。然后，对两个不同地点的 DCP 试验结果、CBR 和土壤压实比（R）进行了研究，并确定了这些参数之间的关系。结果表明，在这两个地点，DCP 与 CBR 参数之间存在良好的统计关系。此外，R 参数与动态渗透仪锥测结果之间也首次出现了很好的相关性。观测结果表明，公路位置的相关系数高于 0.9，与景观美化工程相比，公路位置的土壤具有良好的平整度。

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Presenting a CBR Estimation Model and Compaction Characteristics of Base Layer of Pavement Using a Dynamic Cone Penetrometer (DCP) Test

In general, the basis of any type of management decision-making system is a correct evaluation of the current situation, future prediction, and finally optimal decision-making. There are various field methods for road pavement evaluation, among which are destructive and nondestructive methods. One of the nondestructive testing methods is dynamic cone penetrometer (DCP) testing. The main objective of this study is to investigate the feasibility of using DCP to control the quality of pavement layers and estimate parameters such as California bearing ratio (CBR) and compaction ratio. For this purpose, DCP, CBR tests, and determination of density percentage have been used as parameters used to control the quality of pavement layers. The dynamic resistance meter or DCP is a device that is used to quickly measure the resistance of different pavement layers. This device causes a small destruction on the surface. Hence, it is also called nondestructive testing. However, to use DCP, it is necessary to measure its results with the results of prevalent and widely used tests such as CBR and to examine their relationships. In this research, the DCP, CBR, density, sieve analysis, moisture content, and Atterberg limit tests were performed on two locations (a highway under construction and a landscaping project). Then, the results of the DCP test with CBR and soil compaction ratio (R) in two different locations were investigated and the relationships between these parameters were determined. The results showed that there is a good relationship statistically between DCP and CBR parameters in both locations. Also, for the first time, a very good correlation between the R parameter and the results of the dynamic penetrometer cone test was obtained. The observations represented that the correlation coefficients are higher than 0.9 in the highway location, which had well-graded soil in comparison with the landscaping project.

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来源期刊

Journal of Testing and Evaluation 工程技术-材料科学：表征与测试

CiteScore

2.30

自引率

8.30%

发文量

221

审稿时长

6.7 months

期刊介绍： This journal is published in six issues per year. Some issues, in whole or in part, may be Special Issues focused on a topic of interest to our readers. This flagship ASTM journal is a multi-disciplinary forum for the applied sciences and engineering. Published bimonthly, the Journal of Testing and Evaluation presents new technical information, derived from field and laboratory testing, on the performance, quantitative characterization, and evaluation of materials. Papers present new methods and data along with critical evaluations; report users'' experience with test methods and results of interlaboratory testing and analysis; and stimulate new ideas in the fields of testing and evaluation. Major topic areas are fatigue and fracture, mechanical testing, and fire testing. Also publishes review articles, technical notes, research briefs and commentary.