Effect of coarse aggregate size and grouting process on properties of preplaced aggregate concrete

Kunal Krishna Das, Siu Shu Eddie Lam

Research output: Journal article publicationConference articleAcademic researchpeer-review

1 Citation (Scopus)

Abstract

Preplaced aggregate concrete (PAC) is produced by first pre-placing the coarse aggregates and then injecting a grout to fill in the voids between the aggregates. This study aims to investigate the effects of coarse aggregate size and grouting process on PAC through experimental study. The effect of flowability and compressive strength of grout is explored. A suitable grout mix is then selected to investigate the effect of different coarse aggregate sizes i.e. 14 mm, 20 mm, 37 mm and 45 mm on the properties of PAC. Effect on PAC using two different grouting processes, namely pumping process and gravity process is investigated. Pumping the grout into preplaced aggregates resulted in lesser void ratio and higher compressive strength. Using 20 mm size aggregates for production of PAC is recommended to achieve higher compressive strength and better resistance to chloride ion penetration.

Original languageEnglish
Article number121
JournalWorld Congress on Civil, Structural, and Environmental Engineering
DOIs
Publication statusPublished - Apr 2019
Event4th World Congress on Civil, Structural, and Environmental Engineering, CSEE 2019 - Rome, Italy
Duration: 7 Apr 20199 Apr 2019

Keywords

  • Aggregate size
  • Compressive strength
  • Durability
  • Grouting process
  • Preplaced aggregate concrete

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Environmental Engineering

Cite this