Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Transport Properties of Limestone-Containing Self-Consolidating Concrete
This study examined the effects of limestone powder as a partial replacement for cementitious materials on transport properties of self-consolidating concrete (SCC). Several SCCs were prepared with a uniform powder content (cement + fly ash + limestone) and water-cementitious materials ratio (w/cm) of 475 kg/m3 (800 lb/yd3) and 0.45, respectively. Class F fly ash substituted 20% by weight of cement and up to 30% of total cementitious materials was replaced with limestone powder. A slump flow of 635 ± 25 mm (25 ± 1 in.), visual stability index of 1, and passing ability of 25 ± 12.5 mm (1 ± 0.5 in.) were used for all studied mixtures. The devised experimental program contained compressive strength, absorption, sorptivity, rapid chloride penetration (RCPT), rapid chloride migration (RCMT), water penetration depth, and chloride diffusion. Inclusion of limestone powder improved absorption, volume of permeable voids, capillary absorption, water penetration depth, and RCPT. Compressive strength and RCMT improved marginally, whereas a slight negative effect was observed for chloride diffusion.
Transport Properties of Limestone-Containing Self-Consolidating Concrete
This study examined the effects of limestone powder as a partial replacement for cementitious materials on transport properties of self-consolidating concrete (SCC). Several SCCs were prepared with a uniform powder content (cement + fly ash + limestone) and water-cementitious materials ratio (w/cm) of 475 kg/m3 (800 lb/yd3) and 0.45, respectively. Class F fly ash substituted 20% by weight of cement and up to 30% of total cementitious materials was replaced with limestone powder. A slump flow of 635 ± 25 mm (25 ± 1 in.), visual stability index of 1, and passing ability of 25 ± 12.5 mm (1 ± 0.5 in.) were used for all studied mixtures. The devised experimental program contained compressive strength, absorption, sorptivity, rapid chloride penetration (RCPT), rapid chloride migration (RCMT), water penetration depth, and chloride diffusion. Inclusion of limestone powder improved absorption, volume of permeable voids, capillary absorption, water penetration depth, and RCPT. Compressive strength and RCMT improved marginally, whereas a slight negative effect was observed for chloride diffusion.
Transport Properties of Limestone-Containing Self-Consolidating Concrete
Nader Ghafoori (Autor:in) / Rebecca Spitek / Meysam Najimi
ACI materials journal ; 114
2017
Aufsatz (Zeitschrift)
Englisch
Transport Properties of Limestone-Containing Self-Consolidating Concrete
| British Library Online Contents | 2017
Influence of limestone size and content on transport properties of self-consolidating concrete
| British Library Online Contents | 2016
Influence of limestone size and content on transport properties of self-consolidating concrete
| British Library Online Contents | 2016
Influence of limestone size and content on transport properties of self-consolidating concrete
| British Library Online Contents | 2016