TY - GEN
T1 - Flexural behavior of reinforced concrete beam with polymer coated pumice
AU - Nainggolan, Christin Remayanti
AU - Wijatmiko, Indradi
AU - Wibowo, Ari
N1 - Publisher Copyright:
© 2017 Author(s).
PY - 2017/9/29
Y1 - 2017/9/29
N2 - Sustainable development has become an important issue due to the increasing consideration of preserving the nature. Many alternative for coarse aggregate replacement have been investigated ranging from natural and fabricated aggregates. In this study, natural aggregate pumice was investigated since it offers lower density that give paramount benefit in reducing total building weight and hence reducing the earthquake excitation effect and optimizing the structural dimension. However, the characteristic of porous surfaces of pumice causes excessive water absorption during concrete mixing process. Therefore, to reduce the additional water, the pumice aggregates were coated with polymer. The tested specimens consisted of normal concrete beams (NCB), uncoated pumice aggregate concrete beam (UPA) and polymer coated pumice aggregate concrete beam (PCP). The objective of the research was to obtain the effect of coating on the pumice aggregate to the flexural behavior of concrete beams. The lateral load-displacement behavior, ductility and collapse mechanism were studied. The results showed that there were only marginal drop on the load-carrying capacity of the pumice aggregate beam compared to those of normal beam. Additionally, the ductility coefficient of specimens UPA and PCP decreased of 11,97% and 14,03% respectively compared to NCB, and the ultimate load capacity decreased less than 1%. Overall, the pumice aggregate showed good characteristic for replacing normal coarse aggregate.
AB - Sustainable development has become an important issue due to the increasing consideration of preserving the nature. Many alternative for coarse aggregate replacement have been investigated ranging from natural and fabricated aggregates. In this study, natural aggregate pumice was investigated since it offers lower density that give paramount benefit in reducing total building weight and hence reducing the earthquake excitation effect and optimizing the structural dimension. However, the characteristic of porous surfaces of pumice causes excessive water absorption during concrete mixing process. Therefore, to reduce the additional water, the pumice aggregates were coated with polymer. The tested specimens consisted of normal concrete beams (NCB), uncoated pumice aggregate concrete beam (UPA) and polymer coated pumice aggregate concrete beam (PCP). The objective of the research was to obtain the effect of coating on the pumice aggregate to the flexural behavior of concrete beams. The lateral load-displacement behavior, ductility and collapse mechanism were studied. The results showed that there were only marginal drop on the load-carrying capacity of the pumice aggregate beam compared to those of normal beam. Additionally, the ductility coefficient of specimens UPA and PCP decreased of 11,97% and 14,03% respectively compared to NCB, and the ultimate load capacity decreased less than 1%. Overall, the pumice aggregate showed good characteristic for replacing normal coarse aggregate.
UR - https://www.scopus.com/pages/publications/85031313386
U2 - 10.1063/1.5003509
DO - 10.1063/1.5003509
M3 - Conference contribution
AN - SCOPUS:85031313386
T3 - AIP Conference Proceedings
BT - Green Construction and Engineering Education for Sustainable Future
A2 - Pratama, M. Mirza Abdillah
A2 - Risdanareni, Puput
A2 - Yulistyorini, Anie
A2 - Sari, Astri Anindya
A2 - Idfi, Gilang
PB - American Institute of Physics Inc.
T2 - 1st Green Construction and Engineering Education Conference 2017, GCEE 2017
Y2 - 8 August 2017 through 9 August 2017
ER -