{"title":"轻型挠度计测量路面基层挠度的试验机理分析","authors":"Yao Yao , Shuo Li , Guangyuan Zhao , Yi Jiang","doi":"10.1016/j.jtte.2021.08.006","DOIUrl":null,"url":null,"abstract":"<div><p>An extensive experimental-mechanistic study was conducted to reveal the relationship between the light weight deflectometer (LWD) measured deflections and the degree of compaction of pavement base materials. Both laboratory experiments and test pits experiments were performed with different types of pavement base materials. The modulus based maximum allowable LWD deflections under different structural and compaction conditions were developed for the most commonly used pavement base aggregate in Indiana. The maximum allowable deflections are based on the equivalent subgrade modulus and the thickness of the layer to be compacted. It is emphasized that the LWD deflections must be measured as soon as the material is compacted or before the moisture content decreases beyond a specified range. Therefore, the maximum allowable deflections are specified in terms of the difference between the actual moisture content and the optimum moisture content. The maximum allowable deflection values provide a sound basis for compaction quality control using LWD devices.</p></div>","PeriodicalId":47239,"journal":{"name":"Journal of Traffic and Transportation Engineering-English Edition","volume":null,"pages":null},"PeriodicalIF":7.4000,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Experimental-mechanistic analysis of pavement base deflections measured with light weight deflectometer\",\"authors\":\"Yao Yao , Shuo Li , Guangyuan Zhao , Yi Jiang\",\"doi\":\"10.1016/j.jtte.2021.08.006\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>An extensive experimental-mechanistic study was conducted to reveal the relationship between the light weight deflectometer (LWD) measured deflections and the degree of compaction of pavement base materials. Both laboratory experiments and test pits experiments were performed with different types of pavement base materials. The modulus based maximum allowable LWD deflections under different structural and compaction conditions were developed for the most commonly used pavement base aggregate in Indiana. The maximum allowable deflections are based on the equivalent subgrade modulus and the thickness of the layer to be compacted. It is emphasized that the LWD deflections must be measured as soon as the material is compacted or before the moisture content decreases beyond a specified range. Therefore, the maximum allowable deflections are specified in terms of the difference between the actual moisture content and the optimum moisture content. The maximum allowable deflection values provide a sound basis for compaction quality control using LWD devices.</p></div>\",\"PeriodicalId\":47239,\"journal\":{\"name\":\"Journal of Traffic and Transportation Engineering-English Edition\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":7.4000,\"publicationDate\":\"2023-04-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Traffic and Transportation Engineering-English Edition\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2095756423000260\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CIVIL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Traffic and Transportation Engineering-English Edition","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2095756423000260","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
Experimental-mechanistic analysis of pavement base deflections measured with light weight deflectometer
An extensive experimental-mechanistic study was conducted to reveal the relationship between the light weight deflectometer (LWD) measured deflections and the degree of compaction of pavement base materials. Both laboratory experiments and test pits experiments were performed with different types of pavement base materials. The modulus based maximum allowable LWD deflections under different structural and compaction conditions were developed for the most commonly used pavement base aggregate in Indiana. The maximum allowable deflections are based on the equivalent subgrade modulus and the thickness of the layer to be compacted. It is emphasized that the LWD deflections must be measured as soon as the material is compacted or before the moisture content decreases beyond a specified range. Therefore, the maximum allowable deflections are specified in terms of the difference between the actual moisture content and the optimum moisture content. The maximum allowable deflection values provide a sound basis for compaction quality control using LWD devices.
期刊介绍:
The Journal of Traffic and Transportation Engineering (English Edition) serves as a renowned academic platform facilitating the exchange and exploration of innovative ideas in the realm of transportation. Our journal aims to foster theoretical and experimental research in transportation and welcomes the submission of exceptional peer-reviewed papers on engineering, planning, management, and information technology. We are dedicated to expediting the peer review process and ensuring timely publication of top-notch research in this field.