A review of preplaced-aggregate concrete using recycled aggregate and railway wasted ballast

A. Shibuya, T. Iyoda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationEASEC16 - Proceedings of the 16th East Asian-Pacific Conference on Structural Engineering and Construction, 2019
EditorsChien Ming Wang, Sritawat Kitipornchai, Vinh Dao
PublisherSpringer Science and Business Media Deutschland GmbH
Pages1979-1988
Number of pages10
ISBN (Print)9789811580789
DOIs
Publication statusPublished - 2021
Event16th East Asian-Pacific Conference on Structural Engineering and Construction, 2019 - Brisbane, Australia
Duration: 2019 Dec 32019 Dec 6

Publication series

NameLecture Notes in Civil Engineering
Volume101
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565

Conference

Conference16th East Asian-Pacific Conference on Structural Engineering and Construction, 2019
CountryAustralia
CityBrisbane
Period19/12/319/12/6

Keywords

  • Porosity
  • Preplaced-aggregate concrete
  • Railway waste ballast
  • Recycled aggregate

ASJC Scopus subject areas

  • Civil and Structural Engineering

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