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Innovative Non-destructive Testing Technologies for QA/QC of Fresh and Early Stage Concrete

Liu, Yan
http://rave.ohiolink.edu/etdc/view?acc_num=case1301514801

Abstract Details

2011, Doctor of Philosophy, Case Western Reserve University, Civil Engineering.
The dissertation describes the development and validation of a new instrument based on Time Domain Reflectometry (TDR) for measuring properties of fresh and early age concrete. It provides an alternative to traditional quality control methods that rely heavily on the slump value and compressive strength that do not always produce durable concrete. Work in the first stage focused on the design and development of a prototype sensor system for use on fresh and early age concrete. An experimental program systematically evaluated the sensor system’s ability to measure the performance properties of concrete. The program tested several representative types of concrete specimens used in highway pavement, bridges, and industrial and residential structures. TDR signals were collected from concrete specimens subjected to different curing conditions, including early freezing, and the results were correlated with data obtained by standard test methods. The results indicated that the TDR sensor system can reliably measure or estimate concrete properties, such as free water content, density, air void content, initial and final setting times, and mechanical strength. The technology was found not only suitable to measure the physical and electrical properties of materials at common temperature but also works non-destructively under freezing-thawing cycles.
Xiong Yu (Committee Chair)
Xiangwu Zeng (Committee Member)
Adel Saada (Committee Member)
Steve Hauck (Committee Member)
165 p.
Civil Engineering
Concrete; Non-destructive Testing; Time Domain Reflectometry; Freeze-thaw Damage; Fresh Concrete; Early Stage Concrete

Recommended Citations

Citations

  • Liu, Y. (2011). Innovative Non-destructive Testing Technologies for QA/QC of Fresh and Early Stage Concrete [Doctoral dissertation, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case1301514801

    APA Style (7th edition)

  • Liu, Yan. Innovative Non-destructive Testing Technologies for QA/QC of Fresh and Early Stage Concrete. 2011. Case Western Reserve University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=case1301514801.

    MLA Style (8th edition)

  • Liu, Yan. "Innovative Non-destructive Testing Technologies for QA/QC of Fresh and Early Stage Concrete." Doctoral dissertation, Case Western Reserve University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=case1301514801

    Chicago Manual of Style (17th edition)

case1301514801
724
© 2011, all rights reserved.
This open access ETD is published by Case Western Reserve University School of Graduate Studies and OhioLINK.