Carbon emissions associated with two types of foundations: CP-II Portland cement-based composite vs. geopolymer concrete

AUTOR(ES)

Gomes, Kelly Cristiane

FONTE

Matéria (Rio J.)

DATA DE PUBLICAÇÃO

25/11/2019

RESUMO

ABSTRACT The cement industry is the second-largest single industrial emitter in the world and therefore has an important role to play in reducing the intensity of its carbon emissions: participation of the sector is important to contribute to the goal of the Paris Climate Change Agreement to limit global warming. One of the strategies for reducing the carbon footprint of the cement industry is substitution of Portland cement, which is a component of the concrete mix widely used as a construction material worldwide. Geopolymer cement has emerged as an alternative for Portland cement, with several advantages. This study applied the Life Cycle Assessment methodology to quantify the carbon emissions associated with 1m3 of two types of concrete (concrete PC-II cement-based Portland cement vs. geopolymer concrete). Geopolymer concrete presented almost 43% less carbon emissions, while also presenting high physic-chemical performance. It was verified that geopolymer concrete has the potential to help mitigate climate change, and can be employed as part of the plan to minimize the emissions associated with the construction sector.

Documentos Relacionados

• Chaotropic substances and their effects on the mechanical strength of Portland cement-based materials
• Mechanical properties and fractography of cement-based composites reinforced by natural piassava and jute fibers
• Digital bridges need concrete foundations: lessons from the Health InterNetwork India
• Reforço à flexão de vigas de concreto armado com manta de polímero reforçado com fibras de carbono (PRFC) aderido a substrato de transição constituído por compósito cimentício de alto desempenho
• Influence of surface roughness and the use of new types of fiber in bearing pads of cement-based material for precast concrete connections