Properties of partition wall blocks prepared with fresh concrete wastes

Shi Cong Kou, Bao Jian Zhan, Chi Sun Poon

Research output: Journal article publicationJournal articleAcademic researchpeer-review

35 Citations (Scopus)

Abstract

The research was conducted to explore the feasible use of fresh concrete waste (FCW) for the manufacturing of partition wall blocks. The FCW sourced from a ready mix concrete plant was crushed into the size of fine aggregate (<5 mm), and used to replace natural sand at the proportions of 0%, 25%, 50%, 75% and 100% by weight with an aggregate/cement ratio of 12, for producing partition blocks. The properties of the blocks, such as density, water absorption, compressive and transverse strengths, and drying shrinkage as well as the loss of strength, mass and ultrasonic pulse velocity after exposure to elevated temperatures (300 °C, 500°C and 800°C) were determined. The results indicate that as FCW content increased in the blocks, the water absorption increased and density decreased due to the high porosity of FCW. But the incorporation of FCW aggregates improved the mechanical properties (compressive strength and transverse strength) of the partition blocks. However it weakened the fire endurance of the blocks. The results of the study have demonstrated that it is feasible to utilize the FCW in the production of non load-bearing concrete products, such as partition blocks.
Original languageEnglish
Pages (from-to)566-571
Number of pages6
JournalConstruction and Building Materials
Volume36
DOIs
Publication statusPublished - 1 Nov 2012

Keywords

  • Elevated temperatures
  • Fire resistance
  • Fresh concrete waste
  • Hardened properties
  • Partition wall block

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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