A. Shah
Please Note
1 records found
1
Global climate change has been a huge matter of concern today. While there are several factors that contribute to greenhouse gases, adversely affecting the planet, CO2 emission is one of them. It is said that 8% of total carbon dioxide emission is caused due to the production of Ordinary portland cement used for concrete in construction. The construction industry highly relies upon concrete as a major and widely used construction material. Solutions to reduce the production of Portland cement without having to entirely remove concrete as a building material has been an important discussion. A possible solution is to replace the Portland cement in concrete with industrial by-products further activating the binder with alkali activators producing a green concrete called ‘Geopolymer concrete’ (GPC) which would reduce CO2 emission. The biggest challenge yet is that, designing any structure, a standard validated code/regulation is required and GPC doesn’t have a standard code of practice. All the concretecodes till now are formulated taking the parameters for Ordinary Portland cement concrete. This lack of design models specifically formulated for GPC restricts contractorsand engineers to use GPC in structures. This is why GPC has not gained much acceptance in practice. This research was done in collaboration with Boskalis. A bridge (KW15-N69) has beenconstructed using geopolymer concrete in North Brabant province of the Netherlands.To make the bridge sustainable and circular, the GPC used contained no cement andaggregates were fully replaced by thermally recycled asphalt aggregates. For design ofthe bridge, Eurocode 2 for concrete structures was used and additionally regulations by Dutch ministry of transport and infrastructure was followed.This research will act asone of the pioneer studies to investigate the overall structural behaviour of geopolymerconcrete beams with respect to standard codes which should help design engineers upto some extent to execute and design structures using GPC in future. ...
Global climate change has been a huge matter of concern today. While there are several factors that contribute to greenhouse gases, adversely affecting the planet, CO2 emission is one of them. It is said that 8% of total carbon dioxide emission is caused due to the production of Ordinary portland cement used for concrete in construction. The construction industry highly relies upon concrete as a major and widely used construction material. Solutions to reduce the production of Portland cement without having to entirely remove concrete as a building material has been an important discussion. A possible solution is to replace the Portland cement in concrete with industrial by-products further activating the binder with alkali activators producing a green concrete called ‘Geopolymer concrete’ (GPC) which would reduce CO2 emission. The biggest challenge yet is that, designing any structure, a standard validated code/regulation is required and GPC doesn’t have a standard code of practice. All the concretecodes till now are formulated taking the parameters for Ordinary Portland cement concrete. This lack of design models specifically formulated for GPC restricts contractorsand engineers to use GPC in structures. This is why GPC has not gained much acceptance in practice. This research was done in collaboration with Boskalis. A bridge (KW15-N69) has beenconstructed using geopolymer concrete in North Brabant province of the Netherlands.To make the bridge sustainable and circular, the GPC used contained no cement andaggregates were fully replaced by thermally recycled asphalt aggregates. For design ofthe bridge, Eurocode 2 for concrete structures was used and additionally regulations by Dutch ministry of transport and infrastructure was followed.This research will act asone of the pioneer studies to investigate the overall structural behaviour of geopolymerconcrete beams with respect to standard codes which should help design engineers upto some extent to execute and design structures using GPC in future.