Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Long-Life Slab Replacement Concrete. Final Report March 4, 2013-March 31, 2015
This research was initiated following reports of high incidence of cracking on FDOT concrete pavement replacement slab projects. Field slabs were instrumented for data acquisition from high-early-strength concrete pavement replacement slabs placed on projects funded by the Florida Department of Transportation (FDOT). Data were collected for three slabs located in Jacksonville, Florida, and Gainesville, Florida. A battery of laboratory tests was simultaneously conducted on the FDOT-approved concrete mixture designs used in the instrumented field slabs in addition to mixtures with variable chloride-based accelerator dosage. Temperature and strain data, as well as physical and thermal data, were acquired from slabs from the construction projects. The physical and thermal data acquired from the field were used for modeling description and verification. Subsequent to the field testing and data acquisition, the slabs were inspected for the presence of cracking. Laboratory testing included as-received materials characterization, heat of hydration measurements using isothermal and semi-adiabatic calorimetry for temperature rise assessment, and strength maturity curves for strength assessment. Using Concrete Works and HIPERPAV III, the findings indicated that adherence to the approved mixture design is critical. High placement temperatures and concrete placement during the day increased concrete cracking potential. Field additions of accelerator in excess of the approved mixture design were also found to increase the cracking potential.
Long-Life Slab Replacement Concrete. Final Report March 4, 2013-March 31, 2015
This research was initiated following reports of high incidence of cracking on FDOT concrete pavement replacement slab projects. Field slabs were instrumented for data acquisition from high-early-strength concrete pavement replacement slabs placed on projects funded by the Florida Department of Transportation (FDOT). Data were collected for three slabs located in Jacksonville, Florida, and Gainesville, Florida. A battery of laboratory tests was simultaneously conducted on the FDOT-approved concrete mixture designs used in the instrumented field slabs in addition to mixtures with variable chloride-based accelerator dosage. Temperature and strain data, as well as physical and thermal data, were acquired from slabs from the construction projects. The physical and thermal data acquired from the field were used for modeling description and verification. Subsequent to the field testing and data acquisition, the slabs were inspected for the presence of cracking. Laboratory testing included as-received materials characterization, heat of hydration measurements using isothermal and semi-adiabatic calorimetry for temperature rise assessment, and strength maturity curves for strength assessment. Using Concrete Works and HIPERPAV III, the findings indicated that adherence to the approved mixture design is critical. High placement temperatures and concrete placement during the day increased concrete cracking potential. Field additions of accelerator in excess of the approved mixture design were also found to increase the cracking potential.
Long-Life Slab Replacement Concrete. Final Report March 4, 2013-March 31, 2015
A. Zayed (Autor:in) / K. Riding (Autor:in) / C. C. Ferraro (Autor:in) / A. Bien-Aime (Autor:in) / N. Shanahan (Autor:in) / D. Buidens (Autor:in) / T. Meagher (Autor:in) / V. Tran (Autor:in) / J. D. Henika (Autor:in) / J. M. Paris (Autor:in)
2015
306 pages
Report
Keine Angabe
Englisch
Long-Life Slab Replacement Concrete, Summary Report
| NTIS | 2015
| Europäisches Patentamt | 2017
REPLACEMENT STEEL PLATE DECK OF CONCRETE SLAB AND REPLACEMENT METHOD OF CONCRETE SLAB
| Europäisches Patentamt | 2017
REPLACEMENT METHOD OF CONCRETE SLAB AND REPLACEMENT STRUCTURE
| Europäisches Patentamt | 2017