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Dissertations / Theses on the topic 'Light falling weight deflectometer'

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Published: 8 September 2021

Last updated: 26 January 2023

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1

Burhani, Ahmadudin. "Correlation Study on the Falling Weight Deflectometer and Light Weight Deflectometer for the Local Pavement Systems." Ohio University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1470663356.

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2

Coleri, Erdem. "Relationship Between Resilient Modulus And Soil Index Properties Of Unbound Materials." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608660/index.pdf.

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In the mechanistic design approach, which has already been started to utilize in several countries, the variations in material properties are better taken into account based on fundemental engineering principles. Resilient modulus is the most important material property that is used in the mechanistic design since it describes the true martial performance of unbound pavement layers under traffic loading. In this thesis, the objective is to determine the resilient modulus, used in the mechanistic design of pavement structures, for the unbound material types used in Turkey and develop linear and

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3

Mataramba, Kankanamge Kasun Dilhara Wimalasena. "Evalutate the performance of geosynthetic reinforced subgrades under monotonic loading." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/235924/1/Kasun_Kankanamge_Thesis.pdf.

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A series of large-scale pavement model tests were conducted in a laboratory environment to investigate the effect of geosynthetics in improving the modulus of weak subgrades. Then, a series of supplement design charts that could be useful for industry practitioners to design geosynthetic reinforced flexible pavements were developed. The outcomes of this study promote the use of geosynthetics in road construction to make economical, environmentally friendly, climate resilient, and sustainable road infrastructure.

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4

Steinert, Bryan Christopher. "Field and Laboratory Evaluation of the Portable Falling Weight Deflectometer." Fogler Library, University of Maine, 2005. http://www.library.umaine.edu/theses/pdf/SteinertBC2005.pdf.

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5

Qin, Jianfeng. "Predicting Flexible Pavement Structural Response Using Falling Weight Deflectometer Deflections." Ohio University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1275612839.

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6

Jansen, Dirk. "Temperaturkorrektur von mit dem Falling-Weight-Deflectometer gemessenen Deflexionen auf Asphaltbefestigungen." Essen Inst. für Straßenbau und Verkehrswesen, 2009. http://d-nb.info/1000217728/34.

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7

Mehta, Jay. "Rigid pavement condition evaluation using dynaflect and falling weight deflectometer measurements." Ohio : Ohio University, 1990. http://www.ohiolink.edu/etd/view.cgi?ohiou1183652762.

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8

Sveinsdóttir, Berglind Ösp. "Pavement behaviour evaluation during spring thaw based on the falling weight deflectometer method." Thesis, KTH, Transportvetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-45981.

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The bearing capacity of a road decreases greatly during spring thaw, when the previously frozen road begins to thaw. The extent of this decrease can be evaluated by making Falling Weight Deflectomter (FWD) measurements on the road, measuring the deflection of the road when an impact load is applied to it. The bearing capacity of the road can then be evaluated by backcalculating the layer modules with backcalculation programs, or through more simple calculations based on the deflection basin indices. Both analyses were carried out in this thesis with data from FWD measurements which were carrie

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9

Park, Hee Mun. "Use of Falling Weight Deflectometer Multi-Load Level Data for Pavement Strength Estimation." NCSU, 2001. http://www.lib.ncsu.edu/theses/available/etd-20011120-151143.

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<p>PARK, HEE MUN. Use of Falling Weight Deflectometer Multi-Load Level Data for Pavement Strength Estimation. (Under the direction of Y. Richard, Kim).The objective of this study is to describe a mechanistic-empirical approach to developing an analysis method for assessing pavement layer conditions and estimating the remaining life of flexible pavements using multi-load level Falling Weight Deflectometer (FWD) deflections. A dynamic finite element program, incorporating a stress-dependent soil model, was developed to generate the synthetic deflection database. Based on this synthetic database,

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10

Meier, Roger William. "Backcalculation of flexible pavement moduli from falling weight deflectometer data using artificial neural networks." Diss., Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/18991.

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11

Schweiger, Daniel J. "Instrumentation of flexible pavement." Ohio University / OhioLINK, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1178911279.

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12

Bueno, Lucas Dotto. "AVALIAÇÃO DEFLECTOMÉTRICA E DE RIGIDEZ: ESTUDO DE CASO EM TRÊS TRECHOS MONITORADOS EM SANTA MARIA/RS." Universidade Federal de Santa Maria, 2016. http://repositorio.ufsm.br/handle/1/7926.

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Petróleo Brasileiro S/A<br>It is unusual practice, in national projects of new pavements and restorations, the consideration of viscoelastic behavior and non-linear elastic of materials that compound or will compound the layers of pavement. However, the linear elastic response is a simplification of the actual behavior of the pavements layers, since the materials used in the structure have dependent stiffness of the stress state (granular layers and subgrades) or temperature and load application time (asphalt concrete). Therefore, it was aimed to study the behavior of the pavements structures

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13

Roussel, Jean-Marie. "Apport de la viscoélasticité dans l’analyse dynamique des essais au Heavy Weight Deflectometer." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSET015.

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Le Heavy ou Falling Weight Deflectometer (F/HWD), est un appareil d’auscultation non destructive des chaussées basé sur la mesure de la déflexion engendrée par un chargement impulsionnel. Les essais F/HWD sont généralement exploités par des méthodes d’analyse inverse, dont le but est de déterminer les propriétés mécaniques des couches de chaussée. Ces méthodes consistent en la recherche du jeu de propriétés mécaniques pour lequel les déflexions calculées à l’aide de modèles numériques sont comparables aux déflexions mesurées in situ. Malgré son utilisation très répandue sur chaussées routières

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14

Luis, Andre Denis. "Utilização do equipamento tipo Falling Weight Deflectometer para medição de deflexão recuperavel para diferentes tipos de pavimentos asfalticos." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/258119.

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Orientador: João Virgilio Merighi<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo<br>Made available in DSpace on 2018-08-14T08:55:45Z (GMT). No. of bitstreams: 1 Luis_AndreDenis_M.pdf: 9014700 bytes, checksum: b97f4cb26221bdd835d39342c297c2b8 (MD5) Previous issue date: 2009<br>Resumo: Esta pesquisa versa sobre a utilização do equipamento FWD - Falling Weight Deflectometer, sendo analisados os diversos aspectos que influenciam nos resultados dos ensaios com o equipamento FWD. Dificuldade de interpretações das especificidade

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15

Alkasawneh, Wael Mohammad. "Backcalculation of Pavement Moduli Using Genetic Algorithms." University of Akron / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=akron1176831189.

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16

Wasniak, Daniel L. "Subgrade and base variability on the Ohio SHRP test road." Ohio : Ohio University, 1999. http://www.ohiolink.edu/etd/view.cgi?ohiou1175276775.

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17

Young, Tyler B. "Early Age Assessment of Cement Treated Materials." BYU ScholarsArchive, 2007. https://scholarsarchive.byu.edu/etd/885.

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In order to avoid the occurrence of early-age damage, cement-treated base (CTB) materials must be allowed to cure for a period of time before the pavement can be opened to traffic. The purpose of this research was to evaluate the utility of the soil stiffness gauge (SSG), heavy Clegg impact soil tester (CIST), portable falling-weight deflectometer (PFWD), dynamic cone penetrometer, and falling-weight deflectometer for assessing early-age strength gain of cement-stabilized materials. Experimentation was performed at four sites on a pavement reconstruction project along Interstate 84 near Morgan

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18

Appea, Alexander Kwasi. "In-Situ Behavior of Geosynthetically Stabilized Flexible Pavement." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/9570.

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The purpose of a geotextile separator beneath a granular base, or subbase in a flexible pavement system is to prevent the road aggregate and the underlying subgrade from intermixing. It has been hypothesized that in the absence of a geotextile, intermixing between base course aggregate and soft subgrade occurs. Nine heavily instrumented flexible pavement test sections were built in Bedford County Virginia to investigate the benefits of geosynthetic stabilization in flexible pavements. Three groups of different base course thicknesses (100, 150 and 200mm) test sections were constructed with eit

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19

Jansen, Dirk [Verfasser]. "Temperaturkorrektur von mit dem Falling-Weight-Deflectometer gemessenen Deflexionen auf Asphaltbefestigungen / Dirk Jansen. Universität Duisburg, Essen, Institut für Straßenbau und Verkehrswesen." Essen : Inst. für Straßenbau und Verkehrswesen, 2009. http://d-nb.info/1000217728/34.

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20

Sharkins, Anthony August. "Instrumentation for SPS-2." Ohio : Ohio University, 1996. http://www.ohiolink.edu/etd/view.cgi?ohiou1178043493.

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21

Knauff, Marcel [Verfasser], Edeltraud [Akademischer Betreuer] Straube, Doru C. [Akademischer Betreuer] Lupascu, and Jürgen [Akademischer Betreuer] Hothan. "Quantitative Bewertung der Tragfähigkeit von Asphaltbefestigungen durch Falling-Weight-Deflectometer Messungen / Marcel Knauff. Gutachter: Doru C. Lupascu ; Jürgen Hothan. Betreuer: Edeltraud Straube." Duisburg, 2015. http://d-nb.info/1074825195/34.

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22

Macioce, Damon J. "Performance of instrumented flexible pavement." Ohio : Ohio University, 1997. http://www.ohiolink.edu/etd/view.cgi?ohiou1177092747.

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23

Walters, Shane A. "Field performance of dowel bars." Ohio : Ohio University, 1999. http://www.ohiolink.edu/etd/view.cgi?ohiou1175281160.

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24

NASCIMENTO, Mauro Henrique Alves. "Análise da incompatibilidade de rigidez entre camadas de revestimentos asfálticos na ocorrência de slippage em pavimento aeroportuário." Universidade Federal de Campina Grande, 2017. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/386.

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Submitted by Lucienne Costa (lucienneferreira@ufcg.edu.br) on 2018-04-13T18:16:49Z No. of bitstreams: 1 MAURO HENRIQUE ALVES NASCIMENTO – DISSERTAÇÃO (PPGECA) 2017.pdf: 22942682 bytes, checksum: d52bbbcac224ea9695c0dd3c9ffc12d1 (MD5)<br>Made available in DSpace on 2018-04-13T18:16:49Z (GMT). No. of bitstreams: 1 MAURO HENRIQUE ALVES NASCIMENTO – DISSERTAÇÃO (PPGECA) 2017.pdf: 22942682 bytes, checksum: d52bbbcac224ea9695c0dd3c9ffc12d1 (MD5) Previous issue date: 2017-06-09<br>Com a finalidade de sanar as degradações do pavimento, devem-se realizar estudos avaliativos das condições estrutur

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25

Liao, Yun. "Viscoelastic FE Modeling of Asphalt Pavements and Its Application to U.S. 30 Perpetual Pavement." Ohio University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1190919049.

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26

Zhu, Junqing. "Forensic Study and Finite Element Modeling of Unbonded Concrete Overlay Pavements on Interstate 70 & 77 in Ohio." Ohio University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1501156328255479.

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27

Pinto, Filho Washington Luiz. "Avaliação e diagnóstico de vias urbanas expressas de Manaus: condições estruturais e funcionais." Universidade Federal do Amazonas, 2013. http://tede.ufam.edu.br/handle/tede/4621.

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Submitted by Geyciane Santos (geyciane_thamires@hotmail.com) on 2015-09-30T14:23:40Z No. of bitstreams: 1 Dissertação - Washington Luiz Pinto Filho.pdf: 8211076 bytes, checksum: 5b0146ee71fe71f4ffea30a9fca0f822 (MD5)<br>Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2015-10-02T20:44:54Z (GMT) No. of bitstreams: 1 Dissertação - Washington Luiz Pinto Filho.pdf: 8211076 bytes, checksum: 5b0146ee71fe71f4ffea30a9fca0f822 (MD5)<br>Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2015-10-06T1

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28

Rahimi, Nahoujy Mahdi [Verfasser], Martin [Gutachter] Radenberg, and J. Stefan [Gutachter] Bald. "An artifical neural network approach to model and predict asphalt deflections as a complement to experimental measurements by falling weight deflectometer / Mahdi Rahimi Nahoujy ; Gutachter: Martin Radenberg, J. Stefan Bald ; Fakultät für Bau- und Umweltingenieurwissenschaften." Bochum : Ruhr-Universität Bochum, 2020. http://d-nb.info/1212664256/34.

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29

Paliukaitė, Miglė. "Klimato įtakos automobilių kelių asfalto dangos konstrukcijos stipriui tyrimai ir vertinimas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100701_091723-23606.

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Analizuojama asfalto dangos konstrukcijos elgsena Lietuvos klimato sąlygomis, įvertinant temperatūros ir drėgnio, kaip vienų iš svarbiausių klimato veiksnių, įtaką kelio asfalto dangos konstrukcijos stipriui. Pateikta krintančio svorio deflektometro matavimo metodikų apžvalga kitose šalyse. Atlikta temperatūros ir drėgnio kiekvienos dienos pokyčių analizė, įvertinant jų įtaką dangos konstrukcijai. Nustatyta kelio dangos stiprio ir Eo modulio priklausomybė nuo dangos temperatūros, matuojant kelio dangos įlinkius krintančio svorio deflektometru. Kai asfalto dangos stipris matuojamas skirtingu me

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30

Hope, Charles A. "Evaluation of Portable Devices for Monitoring Microcracking of Cement-Treated Base Layers." BYU ScholarsArchive, 2011. https://scholarsarchive.byu.edu/etd/2965.

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A relatively new method used to reduce the amount of cement-treated base (CTB) shrinkage cracking is microcracking of the CTB shortly after construction. Three portable instruments used in this study for monitoring the microcracking process include the heavy Clegg impact soil tester (CIST), portable falling-weight deflectometer (PFWD), and soil stiffness gauge (SSG). The specific objectives of this research were 1) to evaluate the sensitivity of each of the three portable instruments to microcracking, and 2) to compare measurements of CTB stiffness reduction obtained using the three devices. T

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31

Al-Jhayyish, Anwer K. "Incorporating Chemical Stabilization of the Subgrade in Pavement Design andConstruction Practices." Ohio University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1405480246.

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32

Bartku, Elaine Cleare. "In-Situ Recycling: Applications, Guidelines, and Case Study for Local Governments." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/49669.

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This thesis investigates the application of In-Situ Recycling and provides guidelines for localities to aid in the selection of recycling methods, as well as documents a local government's experience with Cold In-Place Recycling. The recycling methods discussed in this study include Cold In-Place Recycling (CIR), Hot In-Place Recycling (HIR), and Full Depth Reclamation (FDR). These methods are performed onsite and in-place in a continuous process of milling, mixing, and placement. The In-Situ Recycling guidelines include suggestions based on: traffic characteristics, existing road condition

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33

Salour, Farhad. "Moisture Influence on Structural Behaviour of Pavements : Field and Laboratory Investigations." Doctoral thesis, KTH, Väg- och banteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-162076.

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The structural behaviour of pavements in cold regions can considerably be affected by seasonal variation in environmental factors such as temperature and moisture content. Along with the destructive effect of heavy traffic loads, climatic and environmental factors can considerably contribute to pavement deterioration. These factors can influence the structural and functional capacity of the pavement structures which, as a result, can trigger and accelerate pavement deterioration mechanisms. Studies on the influence of variation of the environmental factors on the response and behaviour of pave

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34

Quick, Tyler James. "Temporal and Spatial Variability in Base Materials Treated with Asphalt Emulsion." BYU ScholarsArchive, 2011. https://scholarsarchive.byu.edu/etd/2715.

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The first objective of this research was to investigate temporal trends in the mechanical properties of base materials stabilized with asphalt emulsion and to assess the rate at which emulsion-treated base (ETB) design properties are achieved. The second objective of this research was to identify construction and environmental factors most correlated to specific mechanical properties of ETB layers and to determine which construction factors exhibit the greatest variability. Additional statistical analysis was performed to determine if significant differences existed between different test sect

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35

Pokluda, Radim. "Stavební recykláty pro stmelené směsi vozovek." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-226040.

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In the theoretical part of the thesis are generally characterized hydraulically bound mixtures, their types, classification systems, manufacturing technology and the laying. There are also described experiences from abroad with the use secondary and recycled materials in hydraulically bound mixtures. The practical part deals with the experimental verification of the possibility of the use of secondary materials in hydraulically bound mixtures in construction of road infrastructure. In road laboratory Institute of road structures Brno university of technology was the five proposed mixtures, an

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36

Heathcote, Johan Henry. "Towards using the light falling weight deflectometer as a construction control device." Diss., 2016. http://hdl.handle.net/2263/57182.

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The Light Falling Weight Deflectometer (LFWD) is a dynamic non-destructive test developed to estimate the in-situ stiffness modulus of pavement materials. The technology of this device is very similar to that of the Falling Weight Deflectometer (FWD) to most closely simulate the loading rate and area of a single moving wheel. The LFWD is a portable scaled down hand operated version of the mechanical electrical FWD that applies an impulse load from a drop weight impacting a circular plate resting on the surface to impose various contact pressures through a calibrated system of rubber buffers. T

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37

Magalhães, Bruno Alberto da Cunha. "Comparação de diferentes métodos de avaliação da capacidade de carga de pavimentos rodoviários." Master's thesis, 2015. http://hdl.handle.net/1822/40470.

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Dissertação de mestrado integrado em Engenharia Civil<br>Nas últimas décadas, a rede rodoviária nacional sofreu um grande desenvolvimento tanto ao nível das infraestruturas existentes, como na construção de novas vias. Este desenvolvimento implica também a uma preocupação crescente na conservação e reabilitação da rede. Assim, de forma a aferir-se a verdadeira necessidade da sua reabilitação dos pavimentos existentes, é necessário realizar-se a avaliação da sua capacidade de carga, que é obtida com base em vários parâmetros tais como a deflexão, que por sua vez permite determinar o módulo

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38

Oliveira, Joaquim Pedro Mendes Vilela de. "Avaliação de diferentes métodos de ensaio para determinação da capacidade de carga da fundação de pavimentos rodoviários." Master's thesis, 2017. http://hdl.handle.net/1822/67244.

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Dissertação de Mestrado Integrado em Engenharia Civil<br>Com um crescimento de quase 700% no parque automóvel total em Portugal desde 1974 até 2010 (fonte: ACAP), a rede rodoviária tem obrigatoriamente de se adaptar e desenvolver. Com este progresso vem a adoção de novas soluções como a criação de novas estradas e a conservação/reabilitação da rede. O estudo destas soluções de pavimentos rodoviários baseia-se no conhecimento da capacidade de carga da sua fundação. No entanto, nem sempre existe a possibilidade de realizar uma caraterização in situ desta capacidade de carga, obter o seu módulo

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39

Shu-PingLan and 藍舒平. "Evaluation of Highway Pavements Using Falling Weight Deflectometer." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/yq2ypt.

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碩士<br>國立成功大學<br>土木工程學系<br>104<br>The falling weight deflectometer (FWD) has been used extensively of nondestructive testing (NDT) to support pavement design, rehabilitation strategy selection, overall bearing capacity, and other pavement management activities. These data are used to determine the load-response properties of the pavement structure and subgrade. This study consists of 2 parts: (1) Investigating the 1st National Freeway Miaoli section three years FWD data collected by Central Area National Freeway Bureau. However, the tests were conducted during different seasons. To get comparab

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40

Hou-IeongKuan and 關灝揚. "Structural Capacity Evaluation of Pavements Subjected to Falling Weight Deflectometer." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/h42w25.

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碩士<br>國立成功大學<br>土木工程學系<br>104<br>Although Falling Weight Deflectometer (FWD) is widely used in pavement performance test, FWD data has not been fully analyzed, resulting in limited use of FWD as a follow-up assessment. This study investigates the three years FWD data collected by Central Area National Freeway Bureau, and the Gang Shan district in situ testing FWD data, respectively using normalized deflection, impulse stiffness modulus (ISM), AASHTO Mr equation, Area method and Area parameter (Ar’) such methods to analyze, and with backcalculated modulus, evaluating the pavement structural cap

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41

Lin, Heng-Cheng, and 林恒丞. "Application of Portable Falling Weight Deflectometer for Flexible Pavement Condition Assessment." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/23156209499559143854.

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碩士<br>東南技術學院<br>防災科技研究所<br>97<br>The use of non-destructive testing (NDT) techniques for the evaluation of in-service pavement conditions has been widely accepted in the past few decades. Among the available NDT devices, the Falling Weight Deflectometer (FWD) is one of the most popular equipments being used due to its fast testing speed and loading characteristics. The Portable FWD (PFWD), which is a resembled FWD device, was introduced about a decade ago and was mainly utilized to control the soil quality under pavements in the field. This study explored the possibilities of using PFWD to exa

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42

Chen, Bo-Ruei, and 陳柏瑞. "Construct the Deflection Correction via Falling Weight Deflectometer at National Freeway." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/vta7tk.

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碩士<br>國立中央大學<br>土木工程研究所<br>96<br>Falling weight deflectometer (FWD) is the most effective and well-developed nondestructive testing equipment and has been used to evaluate the structural capacity and calculate the remaining life of pavements. With Dynatest 8000 FWD of Taiwan Area National Freeway Bureau (MOTC), this study draws a set of field operation guideline, local pavement deflection correction model, and backcalculation procedures appliable to freeways in Taiwan based on the result of field testing. This study constructed a standard test field, including test sections representing Fr

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43

Liao, Chi-chou, and 廖啟州. "A Study of the Portable Falling Weight Deflectometer Measured Pavement Modulus." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/94825138068683480613.

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碩士<br>國立高雄應用科技大學<br>土木工程與防災科技研究所<br>92<br>Portable Falling Weight Deflectometer (PFWD) was a new tech machine that first applied to monitor pavement structure in this research. To Aim at accuracy, different type of soil, and deflection backcalculated model which established one by one. The results indicated that the variation was smaller than 5% for stress, deflection, and modulus from PFWD, and also proofed that it’s acceptable in accuracy. At different diameter circle plate it also shown when 100mm plate was changed to 300mm diameter plate that the stress and modulus were reduced 88% and 65%

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44

Wang, Ssu-Tsun, and 王嗣村. "The assessment of strength for a runway using GIS associated the Falling Weight Deflectometer." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/91257150580259814855.

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碩士<br>立德大學<br>資源環境研究所<br>96<br>Because the powerful of digitally store is a massive and complex spatial data, process them and render them into a readable format for the decision marker′s reference, the Geographic Information System (GIS) has been comprehensively applied in recent years in various fields in order to tackle the problems concerning geographic factors and spatial data. Furthermore, many military and civilian airports and airfields in Taiwan have been operating for quite a long time and some of their pavements on runways are undergoing or going to undergo repaid deterioration. If

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Chou, Min-Hui, and 周明輝. "A Study on the Significance of Calibration and Performance from Pavement Falling Weight Deflectometer." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/27694959495067746381.

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碩士<br>中原大學<br>土木工程研究所<br>89<br>The main researches in pavement engineering field in the European and American countries all take resilient modulus, MR as an index on evaluating the structure strength of the pavement and the performance. And the Falling Weight Deflection, FWD instrument can measure the deflection of the pavement directly and recalculate the MR of each layer of the pavement structure. Because of the efficiency of this testing method and can also remain the oneness of the pavement, FWD instrument is now replacing the traditional coring sample method and been wildly used on evalua

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LAI, J. C., and 賴榮俊. "The Deflection Testing value of Falling Weight Deflectometer in the use of Pavement Maintenance." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/79025557404910675834.

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Huang, Shu-Fang, and 黃琡芳. "The Study of Input and Information Manage System for Falling Weight Deflectometer Field Survey." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/89141973354262337775.

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碩士<br>中原大學<br>土木工程研究所<br>90<br>To meet the continuously construction of the total mileage of the National Freeway system, a better pavement question investigation approach has become necessary. With a new approach that can keep the investigated section intact and fast to perform, the efficiency of whole investigation process can be increased and the impact on traffic and cost to the society can both be lowered. Therefore, the research presents a field investigation information input and management system specially designed for Falling Weight Deflectometer. Research works include the sele

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Peddibhotla, Sruthi Sree Sravya. "Implementation of a network-level pavement structural condition index based on falling weight deflectometer data." 2010. http://hdl.handle.net/2152/10001.

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The Texas Department of Transportation (TxDOT) uses the Pavement Management Information Systems (PMIS) to store and analyze pavement data, and to summarize information needed to support pavement-related decisions. The information on overall condition of the pavement is stored in PMIS, measured with various scores based on visual distress and ride quality surveys. However, a direct measure of the pavement structural condition is currently not in use. A network-level index that can distinguish pavements that require Preventive Maintenance (PM) from those that require Rehabilitation (Rhb) is req

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Chen, Chung Wei, and 鐘偉逞. "The Study on Using Falling Weight Deflectometer(FWD) Evaluate Highway Pavement Structure Strength in Taiwan." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/54981656885581845065.

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碩士<br>國立中央大學<br>土木工程研究所<br>88<br>The main purpose of using the Falling Weight Deflectometer (FWD), a widely used non-destructive testing equipment, is to evaluate the structural integrity and the bearing capacity of existing pavements. The data measured by FWD can be further analyzed to estimate the remaining life of a pavement and to design the overlay thickness. As such, FWD deflections provide the primary means of making rehabilitation decisions for highway agencies. The JILS-20 FWD was employed in this study for the evaluation of pavement conditions. The major goal is to develop a localize

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Liu, Jung, and 劉蓉. "The Back-Calculation Analysis of Falling Weight Deflectometer and the Development of Temperature Evaluation Model for Asphalt Pavement." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/e8x42j.

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碩士<br>國立中興大學<br>土木工程學系所<br>107<br>The Falling Weight Deflectometer (FWD) is a non-destructive test (NDT) and has been used to evaluate the structural capacity and calculate the remaining life of pavements. It is used to measure the deflection when each measuring point on the road surface is subjected to an impact load. According to the measured deflection, carry out back-calculation analysis to obtain the structural strength of each layer of the road. However, the strength of the asphalt material layer is affected by temperature. Hence, the strength of the asphalt material layer needs to be co

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