A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Sustainability Assessment of Concrete Mixtures for Pavements and Bridge Decks
The need to produce sustainable concrete has pushed cement producers to replace 5 to 15% of their typical Portland cement (PC) mix with limestone to produce Portland limestone cement (PLC). The advantage of using PLC is the reduced energy and cost associated with the raw materials for manufacturing the cement. Supplementary cementitious materials (SCMs) such as ground granulated blast furnace slag (GGBS) and fly ash are also increasingly used, to replace the cement by more than 20% by weight, while batching with concrete. This study evaluates the modified concrete mixtures with PLC and SCMs for their impact on the overall sustainability of concrete for its use in pavements and bridge decks. The LCA analyses for a bridge deck project in Chicago (USA) revealed that the construction phase of the bridge deck contributed the most to the negative environmental impacts and the total project cost for all concrete mixes assessed. In addition, the greatest difference in environmental impacts among different mixes was observed during raw material acquisition stage. Further, the concrete mixes employing fly ash as an amendment had the highest positive impact with respect to global warming, than by mixes employing slag amendment.
Sustainability Assessment of Concrete Mixtures for Pavements and Bridge Decks
The need to produce sustainable concrete has pushed cement producers to replace 5 to 15% of their typical Portland cement (PC) mix with limestone to produce Portland limestone cement (PLC). The advantage of using PLC is the reduced energy and cost associated with the raw materials for manufacturing the cement. Supplementary cementitious materials (SCMs) such as ground granulated blast furnace slag (GGBS) and fly ash are also increasingly used, to replace the cement by more than 20% by weight, while batching with concrete. This study evaluates the modified concrete mixtures with PLC and SCMs for their impact on the overall sustainability of concrete for its use in pavements and bridge decks. The LCA analyses for a bridge deck project in Chicago (USA) revealed that the construction phase of the bridge deck contributed the most to the negative environmental impacts and the total project cost for all concrete mixes assessed. In addition, the greatest difference in environmental impacts among different mixes was observed during raw material acquisition stage. Further, the concrete mixes employing fly ash as an amendment had the highest positive impact with respect to global warming, than by mixes employing slag amendment.
Sustainability Assessment of Concrete Mixtures for Pavements and Bridge Decks
Reddy, Krishna R. (author) / Yargicoglu, Erin (author) / Ibrahim, Mustapha (author) / Kumar, Girish (author)
ASCE India Conference 2017 ; 2017 ; New Delhi, India
2018-12-13
Conference paper
Electronic Resource
English
Experimental Analysis f Waterproofing Polymeric Pavements for Concrete Bridge Decks
| Tema Archive | 2014
Thermal and Bonding Behavior of Synthetic Thin Pavements for Concrete Bridge Decks
| Springer Verlag | 2021
An Experimental Evaluation of Concrete Bridge Decks and Pavements, Using Ground Penetrating Radar
| British Library Conference Proceedings | 1997