Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
This study evaluates Grade 120 Granulated Blast Furnace Slag GGBFS and its effect on the properties of hydraulic cement concrete used in structural and pavement construction. Several mix designs, structural and pavement, were used for this evaluation with varying amounts of GGBFS used as a substitution for cement. These substitutions were a percentage by weight substitution. This study looked at the effects of slag on workability, constructability, durability and the compressive strength of the concrete. How GGBFS affected the concrete's set times was also critical in establishing the maximum substitution amount for LADOTD concrete structures and pavements. In addition, an informal telephone survey was taken with other state DOT's concerning their use and experience using GGBGS in concrete. This further assisted LADOTD in the development of their own specifications for GGBFS concretes. Test results indicate that concretes with GGBFS substitutions displayed delays in set times and exhibited delays in compressive strengths at an early age, as compared to conventional concrete mixes. However, at later ages the compressive and flexural strengths markedly surpassed those of conventional concrete mixes as compared to conventional concrete mixes. However, at later ages the compressive and flexural strengths markedly surpassed those of conventional mixes as the cement content increased. Permeability was greatly reduced in those concretes that incorporated GGBFS as opposed to the conventional mixes.
This study evaluates Grade 120 Granulated Blast Furnace Slag GGBFS and its effect on the properties of hydraulic cement concrete used in structural and pavement construction. Several mix designs, structural and pavement, were used for this evaluation with varying amounts of GGBFS used as a substitution for cement. These substitutions were a percentage by weight substitution. This study looked at the effects of slag on workability, constructability, durability and the compressive strength of the concrete. How GGBFS affected the concrete's set times was also critical in establishing the maximum substitution amount for LADOTD concrete structures and pavements. In addition, an informal telephone survey was taken with other state DOT's concerning their use and experience using GGBGS in concrete. This further assisted LADOTD in the development of their own specifications for GGBFS concretes. Test results indicate that concretes with GGBFS substitutions displayed delays in set times and exhibited delays in compressive strengths at an early age, as compared to conventional concrete mixes. However, at later ages the compressive and flexural strengths markedly surpassed those of conventional concrete mixes as compared to conventional concrete mixes. However, at later ages the compressive and flexural strengths markedly surpassed those of conventional mixes as the cement content increased. Permeability was greatly reduced in those concretes that incorporated GGBFS as opposed to the conventional mixes.
Evaluation of Grade 120 Granulated Ground Blast Furnace Slag in Concrete (Grade 120)
1999
56 pages
Report
Keine Angabe
Englisch
Construction Equipment, Materials, & Supplies , Highway Engineering , Slag cements , Concretes , Tests , Fly ash , Minerals , Admixtures , Blant furnaces , Pavement overlays , Concrete durability , Compressive strength , Concrete mixes , Louisiana , Construction materials , Permeability , Tables(Data) , Hydraulic cements , Grade 120 Granulated Ground Blast Furnace Slag
Ground granulated blast furnace slag - concrete admixture
| Tema Archiv | 1996
Ground Granulated Blast-Furnace Slag
| Springer Verlag | 2017
Autogenous Shrinkage of Ground-Granulated Blast-Furnace Slag Concrete
| Online Contents | 2000
Autogenous Shrinkage of Ground-Granulated Blast-Furnace Slag Concrete
| British Library Online Contents | 2000