Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Optimizing opening of PCC pavements using integrated seismic lab and field tests
The use of stress wave technique combined with maturity concept to monitor and predict the strength gain of Portland cement concrete is investigated. Stress wave velocities, from which the dynamic modulus of elasticity is calculated, can be related to the strength parameters and static modulus obtained from standard testing on the molded specimens and drilled cores. When these results are combined with the maturity parameters the predictive power is significantly improved. In this investigation, the lab tests on molded specimens and cores were carried out with the simplified free-free resonant column method and the field tests on concrete slabs or other structures were performed with a hand-held device called the portable seismic pavement analyzer. Experimental studies have been on low, medium and high-strength concrete mixes under different curing regimes and conditions. Based on these experiments, relationships between the dynamic modulus and the strength parameters as well as the maturity are proposed. The technique has shown to be a rapid, simple and economic means for optimizing concrete mix design, quality control/quality assurance of concrete construction and determining the time required before a repaired or newly constructed structure is ready for use.
Optimizing opening of PCC pavements using integrated seismic lab and field tests
The use of stress wave technique combined with maturity concept to monitor and predict the strength gain of Portland cement concrete is investigated. Stress wave velocities, from which the dynamic modulus of elasticity is calculated, can be related to the strength parameters and static modulus obtained from standard testing on the molded specimens and drilled cores. When these results are combined with the maturity parameters the predictive power is significantly improved. In this investigation, the lab tests on molded specimens and cores were carried out with the simplified free-free resonant column method and the field tests on concrete slabs or other structures were performed with a hand-held device called the portable seismic pavement analyzer. Experimental studies have been on low, medium and high-strength concrete mixes under different curing regimes and conditions. Based on these experiments, relationships between the dynamic modulus and the strength parameters as well as the maturity are proposed. The technique has shown to be a rapid, simple and economic means for optimizing concrete mix design, quality control/quality assurance of concrete construction and determining the time required before a repaired or newly constructed structure is ready for use.
Optimizing opening of PCC pavements using integrated seismic lab and field tests
Optimierte Eröffnung von Straßenbelag aus Portland-Zementbeton durch Anwendung integrierter seismischer Labor- und Feldversuche
Yuan, D. (Autor:in) / Nazarian, S. (Autor:in) / Gucunski, N. (Autor:in)
2003
7 Seiten, 10 Bilder, 5 Quellen
(Nicht paginiert)
Aufsatz (Konferenz)
Datenträger
Englisch
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