Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Pozzolanic reaction of sugarcane bagasse ash and its role in controlling alkali silica reaction
HighlightsEffect of SBA in mitigating the ASR expansion was investigated.To explore the micro-structural behavior due to ASR, SEM and EDS analysis were performed.SBA helped in binding alkalies due to pozzolanic reaction resulting into reduced ASR expansion.
AbstractPozzolanic materials are used worldwide to improve concrete properties. In this study, the pozzolanic behavior of sugarcane bagasse ash (SBA) and its role in controlling alkali silica reaction (ASR) was investigated. For this purpose, SBA was acquired from a sugar processing industry. Locally available reactive aggregates were used to introduce the phenomenon of ASR. To evaluate the role of SBA in mitigating ASR, mortar bar specimens were prepared following ASTM C1260 with various SBA dosages (10%, 20%, 30% and 40% by cement weight). To investigate the pozzolanic behavior of SBA strength activity index test and thermal analysis were performed. Results of activity index and thermal analysis showed the pozzolanic behavior of SBA. Moreover, reduction in mortar bar expansion was observed 23% and 46% after replacing 10% and 40% cement with SBA, respectively. Microscopic examination also showed no signs of cracks in mortar bars incorporating SBA; however minor cracking was observed in control specimens due to ASR. Furthermore, Energy disperse X-ray spectroscopy (EDS) showed low Ca/SiO2 ratio of mortar bars incorporating SBA due to dilution process and alkali absorption leading to control the ASR expansion. Therefore, based on the results it can be concluded that pozzolanic behavior of SBA can be helpful in controlling ASR expansion by binding alkalies.
Pozzolanic reaction of sugarcane bagasse ash and its role in controlling alkali silica reaction
HighlightsEffect of SBA in mitigating the ASR expansion was investigated.To explore the micro-structural behavior due to ASR, SEM and EDS analysis were performed.SBA helped in binding alkalies due to pozzolanic reaction resulting into reduced ASR expansion.
AbstractPozzolanic materials are used worldwide to improve concrete properties. In this study, the pozzolanic behavior of sugarcane bagasse ash (SBA) and its role in controlling alkali silica reaction (ASR) was investigated. For this purpose, SBA was acquired from a sugar processing industry. Locally available reactive aggregates were used to introduce the phenomenon of ASR. To evaluate the role of SBA in mitigating ASR, mortar bar specimens were prepared following ASTM C1260 with various SBA dosages (10%, 20%, 30% and 40% by cement weight). To investigate the pozzolanic behavior of SBA strength activity index test and thermal analysis were performed. Results of activity index and thermal analysis showed the pozzolanic behavior of SBA. Moreover, reduction in mortar bar expansion was observed 23% and 46% after replacing 10% and 40% cement with SBA, respectively. Microscopic examination also showed no signs of cracks in mortar bars incorporating SBA; however minor cracking was observed in control specimens due to ASR. Furthermore, Energy disperse X-ray spectroscopy (EDS) showed low Ca/SiO2 ratio of mortar bars incorporating SBA due to dilution process and alkali absorption leading to control the ASR expansion. Therefore, based on the results it can be concluded that pozzolanic behavior of SBA can be helpful in controlling ASR expansion by binding alkalies.
Pozzolanic reaction of sugarcane bagasse ash and its role in controlling alkali silica reaction
Kazmi, Syed Minhaj Saleem (Autor:in) / Munir, Muhammad Junaid (Autor:in) / Patnaikuni, Indubhushan (Autor:in) / Wu, Yu-Fei (Autor:in)
Construction and Building Materials ; 148 ; 231-240
05.05.2017
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Pozzolanic reaction of sugarcane bagasse ash and its role in controlling alkali silica reaction
| British Library Online Contents | 2017
Pozzolanic reaction of sugarcane bagasse ash and its role in controlling alkali silica reaction
| Online Contents | 2017
Pozzolanic reaction of sugarcane bagasse ash and its role in controlling alkali silica reaction
| British Library Online Contents | 2017
| British Library Online Contents | 2017