Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Long Term Durability Investigation of Cold Weather Concrete
Currently, per American Concrete Institute Committee 306 guidance, when placing concrete in temperatures below 40°F, the concrete must be protected. Cold weather admixture systems (CWAS) technology enables concrete to be finished and cured at 23°F. CWAS concrete incorporates a suite of admixtures that depress the freezing point and allow concrete to be poured at sub-freezing temperatures and cured without external heat sources. This document will showcase the history of CWAS concrete and illustrate its long term durability when placed in cold regions. The goal of the project was to investigate long term durability of two field sites in service. This investigation consisted of a visual inspection as well as collecting nondestructive testing data on site and collecting core samples. This technology was a breakthrough for cold regions to continue construction during cold seasons and remain as durable as control concrete poured using conventional methods.
Long Term Durability Investigation of Cold Weather Concrete
Currently, per American Concrete Institute Committee 306 guidance, when placing concrete in temperatures below 40°F, the concrete must be protected. Cold weather admixture systems (CWAS) technology enables concrete to be finished and cured at 23°F. CWAS concrete incorporates a suite of admixtures that depress the freezing point and allow concrete to be poured at sub-freezing temperatures and cured without external heat sources. This document will showcase the history of CWAS concrete and illustrate its long term durability when placed in cold regions. The goal of the project was to investigate long term durability of two field sites in service. This investigation consisted of a visual inspection as well as collecting nondestructive testing data on site and collecting core samples. This technology was a breakthrough for cold regions to continue construction during cold seasons and remain as durable as control concrete poured using conventional methods.
Long Term Durability Investigation of Cold Weather Concrete
Kennedy, Danielle E. (Autor:in) / Smith, Charles E. (Autor:in)
International Airfield and Highway Pavements Conference 2019 ; 2019 ; Chicago, Illinois
Airfield and Highway Pavements 2019 ; 343-352
18.07.2019
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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