Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Nanomechanical Investigation of Internal Curing Effects on Sustainable Concretes with Absorbent Aggregates
The effects of internal curing in concrete and the process of delivering water for cement hydration reactions using absorptive aggregates are studied using nanomechanical test methods. Although internal curing has been a focus of research for some time, little study has been made on the microstructure of cement hydration products in internally cured concretes, particularly using direct mechanical measurements. In this paper, the grid nanoindentation technique was utilized to examine microstructural features and mechanical properties of internally cured cement hydration products in concrete materials with fly ash and blast furnace slag. Internal curing was implemented by coarse lightweight aggregates made of expanded slate. Large aggregate length scales allow for identification of interfacial transition zones near porous aggregates and zones far from porous aggregates. Results suggest that internal curing effects are observable by nanoindentation methods. A slower release of water from porous aggregates leads to the development of hydration products with lower than expected porosity and higher than expected densities compared to concrete with conventional aggregate.
Nanomechanical Investigation of Internal Curing Effects on Sustainable Concretes with Absorbent Aggregates
The effects of internal curing in concrete and the process of delivering water for cement hydration reactions using absorptive aggregates are studied using nanomechanical test methods. Although internal curing has been a focus of research for some time, little study has been made on the microstructure of cement hydration products in internally cured concretes, particularly using direct mechanical measurements. In this paper, the grid nanoindentation technique was utilized to examine microstructural features and mechanical properties of internally cured cement hydration products in concrete materials with fly ash and blast furnace slag. Internal curing was implemented by coarse lightweight aggregates made of expanded slate. Large aggregate length scales allow for identification of interfacial transition zones near porous aggregates and zones far from porous aggregates. Results suggest that internal curing effects are observable by nanoindentation methods. A slower release of water from porous aggregates leads to the development of hydration products with lower than expected porosity and higher than expected densities compared to concrete with conventional aggregate.
Nanomechanical Investigation of Internal Curing Effects on Sustainable Concretes with Absorbent Aggregates
Zadeh, V. Zanjani (Autor:in) / Bobko, C. P. (Autor:in)
Fifth Biot Conference on Poromechanics ; 2013 ; Vienna, Austria
Poromechanics V ; 1625-1634
18.06.2013
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Wave propagation , Nanotechnology , Poroelasticity , Curing , Concrete , Cement , Mechanics , Simulation , Porous media , Aggregates , Porosity , Hydration
Internal Curing of High-Strength Concretes Using Artificial Aggregates as Water Reservoirs
| British Library Online Contents | 2015
Internal Curing of High-Strength Concretes Using Artificial Aggregates as Water Reservoirs
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Pre-Soaked Lightweight Aggregates as Additives for Internal Curing of High-Strength Concretes
| Online Contents | 2004
Pre-Soaked Lightweight Aggregates As Additives For Internal Curing of High-Strength Concretes
| British Library Online Contents | 2004
Pre-Soaked Lightweight Aggregates as Additives for Internal Curing of High-Strength Concretes
| Online Contents | 2004