A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Influence of microencapsulated phase change materials (PCMs) on the chloride ion diffusivity of concretes exposed to Freeze-thaw cycles: Insights from multiscale numerical simulations
Highlights Influence of PCMs in concrete deck under combined freeze-thaw and chloride-ingress. Microstructure-guided numerical simulation establishing macro-micro relation. Significant increase in frost and chloride-durability in concretes with PCM. Reliability-based probabilistic analysis shows significant gain in life of bridge. Helps to tune dosage and transition temperature of PCMs to maximize life of bridge.
Abstract Use of phase change materials (PCMs) to tailor the thermal performance of concretes by efficient energy storage and transmission has gained traction in recent years. This study incorporates microencapsulated PCMs as sand-replacement in concrete bridge decks and performs numerical simulation involving multiple interactive length scales to elucidate the influence of PCM-incorporation in concretes subjected to combined freeze-thaw and chloride ingress-induced deterioration. The simulations show significant increase in durability against combined freeze-thaw and chloride ingress-induced deterioration in concretes when microencapsulated PCMs are incorporated. In addition, a reliability-based probabilistic analysis shows significant increase in life expectancy of bridge decks with PCM-incorporation. The numerical approach presented here provides efficient means to develop design strategies to tune dosage and transition temperature of PCMs to maximize durability of concrete structures in regions that experience significant winter weather conditions.
Influence of microencapsulated phase change materials (PCMs) on the chloride ion diffusivity of concretes exposed to Freeze-thaw cycles: Insights from multiscale numerical simulations
Highlights Influence of PCMs in concrete deck under combined freeze-thaw and chloride-ingress. Microstructure-guided numerical simulation establishing macro-micro relation. Significant increase in frost and chloride-durability in concretes with PCM. Reliability-based probabilistic analysis shows significant gain in life of bridge. Helps to tune dosage and transition temperature of PCMs to maximize life of bridge.
Abstract Use of phase change materials (PCMs) to tailor the thermal performance of concretes by efficient energy storage and transmission has gained traction in recent years. This study incorporates microencapsulated PCMs as sand-replacement in concrete bridge decks and performs numerical simulation involving multiple interactive length scales to elucidate the influence of PCM-incorporation in concretes subjected to combined freeze-thaw and chloride ingress-induced deterioration. The simulations show significant increase in durability against combined freeze-thaw and chloride ingress-induced deterioration in concretes when microencapsulated PCMs are incorporated. In addition, a reliability-based probabilistic analysis shows significant increase in life expectancy of bridge decks with PCM-incorporation. The numerical approach presented here provides efficient means to develop design strategies to tune dosage and transition temperature of PCMs to maximize durability of concrete structures in regions that experience significant winter weather conditions.
Influence of microencapsulated phase change materials (PCMs) on the chloride ion diffusivity of concretes exposed to Freeze-thaw cycles: Insights from multiscale numerical simulations
Nayak, Sumeru (author) / Lyngdoh, Gideon A. (author) / Das, Sumanta (author)
Construction and Building Materials ; 212 ; 317-328
2019-04-01
12 pages
Article (Journal)
Electronic Resource
English
Chloride ion diffusivity of fly ash and silica fume concretes exposed to freeze–thaw cycles
| Online Contents | 2010
Chloride ion diffusivity of fly ash and silica fume concretes exposed to freeze-thaw cycles
| British Library Online Contents | 2010