TY - GEN
T1 - A review of preplaced-aggregate concrete using recycled aggregate and railway wasted ballast
AU - Shibuya, A.
AU - Iyoda, T.
N1 - Funding Information:
This research summarizes the results of Mr. Otsuka, Asahi, student from Civil Engineering Department at Shibaura Institute of Technology.
Publisher Copyright:
© Springer Nature Singapore Pte Ltd. 2021.
PY - 2021
Y1 - 2021
N2 - Preplaced-aggregate concrete is used when normal concrete cannot be cast. In this method, coarse aggregate is put in a formwork, then non-shrink grout mortar is poured into it so the aggregate surrounds are filled with the material. An advantage of preplaced-aggregate concrete is that construction waste can be used as coarse aggregate. However, the durability of the concrete structure when using preplaced-aggregate has not been clarified. It is considered that the properties are different between normal concrete and preplaced-aggregate concrete because of the different method of casting. In this research paper, preplaced-aggregate concrete and ordinary concrete were cast using various aggregates and their properties were analyzed by comparison. For aggregate, it was used recycled aggregate, railway wasted ballast, and normal coarse aggregate. Compressive strength test and the air permeability test were conducted. In addition, the porosity was calculated by the Archimedes test. Preplaced-aggregate concrete did not show difference in strength even when the type of aggregate was changed, and there was no significant difference in pore ratio, concluding that it does not depend on aggregate.
AB - Preplaced-aggregate concrete is used when normal concrete cannot be cast. In this method, coarse aggregate is put in a formwork, then non-shrink grout mortar is poured into it so the aggregate surrounds are filled with the material. An advantage of preplaced-aggregate concrete is that construction waste can be used as coarse aggregate. However, the durability of the concrete structure when using preplaced-aggregate has not been clarified. It is considered that the properties are different between normal concrete and preplaced-aggregate concrete because of the different method of casting. In this research paper, preplaced-aggregate concrete and ordinary concrete were cast using various aggregates and their properties were analyzed by comparison. For aggregate, it was used recycled aggregate, railway wasted ballast, and normal coarse aggregate. Compressive strength test and the air permeability test were conducted. In addition, the porosity was calculated by the Archimedes test. Preplaced-aggregate concrete did not show difference in strength even when the type of aggregate was changed, and there was no significant difference in pore ratio, concluding that it does not depend on aggregate.
KW - Porosity
KW - Preplaced-aggregate concrete
KW - Railway waste ballast
KW - Recycled aggregate
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U2 - 10.1007/978-981-15-8079-6_182
DO - 10.1007/978-981-15-8079-6_182
M3 - Conference contribution
AN - SCOPUS:85104141014
SN - 9789811580789
T3 - Lecture Notes in Civil Engineering
SP - 1979
EP - 1988
BT - EASEC16 - Proceedings of the 16th East Asian-Pacific Conference on Structural Engineering and Construction, 2019
A2 - Wang, Chien Ming
A2 - Kitipornchai, Sritawat
A2 - Dao, Vinh
PB - Springer Science and Business Media Deutschland GmbH
T2 - 16th East Asian-Pacific Conference on Structural Engineering and Construction, 2019
Y2 - 3 December 2019 through 6 December 2019
ER -