Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High performance self-compacting concrete with recycled aggregates from the precast industry
In this short communication, we present the results of an experimental campaign whose final objective was to produce high performance self-compacting concrete (HPSCC) using recycled aggregates (RA) from the precast industry (PI). This work intended to evaluate the potential of self-compacting concrete with RA to achieve similar performance as high performance concrete. The results of the tests carried out on six concrete mixes are presented, wherein the first one corresponds to a mix using natural aggregate (NA) only (100% NA) and the remaining five mixes in which the percentage of fine recycled aggregate (FRA) and coarse recycled aggregate (CRA) in the concrete composition varies, namely: 1st FRA/CRA%: 25/25% (25% RA); 2nd FRA/CRA %: 50/50% (50% RA); 3rd FRA/CRA %: 100/100% (100% RA); 4th FRA/CRA %: 0/100% (100% CRA); 5th FRA/CRA %: 100/0% (100% FRA). The cement replacement percentage with mineral additions was kept constant in all the mixes and included 5% of limestone filler (LF) and 30% of fly ash (FA) (instead of cement). The amount of silica fume (SF) and cement (C) was also kept constant in all mixes: 10% SF (relative to the cement weight) and 450 kg/m³ of C. The a/c ratio of all the mixes was 0.44. A value of the ratio, in absolute volume, between the total amount of fine material (cement and additions) and fine aggregates in the mixes (Vp/Vs) was set. According to the results obtained by Silva et al. (2011), a value Vp/Vs=0.80 was considered. ; info:eu-repo/semantics/publishedVersion
High performance self-compacting concrete with recycled aggregates from the precast industry
In this short communication, we present the results of an experimental campaign whose final objective was to produce high performance self-compacting concrete (HPSCC) using recycled aggregates (RA) from the precast industry (PI). This work intended to evaluate the potential of self-compacting concrete with RA to achieve similar performance as high performance concrete. The results of the tests carried out on six concrete mixes are presented, wherein the first one corresponds to a mix using natural aggregate (NA) only (100% NA) and the remaining five mixes in which the percentage of fine recycled aggregate (FRA) and coarse recycled aggregate (CRA) in the concrete composition varies, namely: 1st FRA/CRA%: 25/25% (25% RA); 2nd FRA/CRA %: 50/50% (50% RA); 3rd FRA/CRA %: 100/100% (100% RA); 4th FRA/CRA %: 0/100% (100% CRA); 5th FRA/CRA %: 100/0% (100% FRA). The cement replacement percentage with mineral additions was kept constant in all the mixes and included 5% of limestone filler (LF) and 30% of fly ash (FA) (instead of cement). The amount of silica fume (SF) and cement (C) was also kept constant in all mixes: 10% SF (relative to the cement weight) and 450 kg/m³ of C. The a/c ratio of all the mixes was 0.44. A value of the ratio, in absolute volume, between the total amount of fine material (cement and additions) and fine aggregates in the mixes (Vp/Vs) was set. According to the results obtained by Silva et al. (2011), a value Vp/Vs=0.80 was considered. ; info:eu-repo/semantics/publishedVersion
High performance self-compacting concrete with recycled aggregates from the precast industry
Barroqueiro, Tiago (Autor:in) / Raposeiro Da Silva, Pedro (Autor:in) / De Brito, Jorge (Autor:in)
01.04.2019
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
DDC:
690
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Durability evaluation of self-compacting concrete with recycled aggregates from the precast industry
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