Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effects of the fineness of limestone powder and cement on the hydration and strength development of PLC concrete
HighlightsLimestone powder accelerated cement hydration by providing nucleation site.Limestone addition up to 15wt% improved the compressive strength compared to Plain by formation of new hydration products.Large surface area of cement clinker is more effective to enhance the strength than that of limestone powder.
AbstractPortland limestone cement (PLC) have been widely used in the world because of its environmental impact, which is less carbon dioxide emissions by using less amount of cement clinkers. Moreover, formation of monocarboaluminates as fillers in cement can improve dense concrete microstructures by reacting with C3A. Also, larger nucleation sites from limestone powder can enhance strengths due to the active cement hydration. Thus, in this study, the effects of the fineness and replacement of limestone powder on the hydration and strength properties of concrete were investigated by X-ray diffraction (XRD), setting times, isothermal calorimetry, compressive strength and mercury intrusion porosimetry techniques. The obtained results showed that the addition of limestone powder accelerated cement hydration by providing nucleation sites for the hydration products, and as a result, the fineness of cement and limestone powder strongly influenced on the hydration reaction and the strength development.
Effects of the fineness of limestone powder and cement on the hydration and strength development of PLC concrete
HighlightsLimestone powder accelerated cement hydration by providing nucleation site.Limestone addition up to 15wt% improved the compressive strength compared to Plain by formation of new hydration products.Large surface area of cement clinker is more effective to enhance the strength than that of limestone powder.
AbstractPortland limestone cement (PLC) have been widely used in the world because of its environmental impact, which is less carbon dioxide emissions by using less amount of cement clinkers. Moreover, formation of monocarboaluminates as fillers in cement can improve dense concrete microstructures by reacting with C3A. Also, larger nucleation sites from limestone powder can enhance strengths due to the active cement hydration. Thus, in this study, the effects of the fineness and replacement of limestone powder on the hydration and strength properties of concrete were investigated by X-ray diffraction (XRD), setting times, isothermal calorimetry, compressive strength and mercury intrusion porosimetry techniques. The obtained results showed that the addition of limestone powder accelerated cement hydration by providing nucleation sites for the hydration products, and as a result, the fineness of cement and limestone powder strongly influenced on the hydration reaction and the strength development.
Effects of the fineness of limestone powder and cement on the hydration and strength development of PLC concrete
Moon, Gyu Don (Autor:in) / Oh, Sungwoo (Autor:in) / Jung, Sang Hwa (Autor:in) / Choi, Young Cheol (Autor:in)
Construction and Building Materials ; 135 ; 129-136
29.12.2016
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| British Library Online Contents | 2017
Impact of limestone fineness on cement hydration at early age
| Elsevier | 2021