Temperature Controlled Microwave Accelerated Curing of Precast Ferrocement Secondary Roofing Slabs

This paper explores the use of microwave technology to speed up the production of precast ferrocement secondary roofing slabs. In particular, the use of discrete on-off microwave curing regimes and the effects of such regimes on the strength and durability of the ferrocement slabs are investigated. By a regime of on-off microwave application to maintain the temperature of the slab within a specified range during microwave curing, overheating of the slabs can be avoided. High early age strengths were attained in slabs cured using such regimes, with no strength loss at 28 days. In addition, the durability of such slabs need not be compromised. The use of an appropriate reduced power level during the later stage of the curing process was found to result in a marginal improvement in the near surface quality without any reduction in early age strength.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/087031159X
• Corporate Authors:

  American Concrete Institute (ACI)

  38800 Country Club Drive
  Farmington Hills, MI  United States  48331
• Authors:
  • Tam, C T
  • Tan, S T
  • Wong, LHJ
  • Shum, C H
  • Teo, C P
  • Ong, KCG
• Publication Date: 2004

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 127-144
• Monograph Title: Thin Reinforced Cement-Based Products and Construction Systems

Subject/Index Terms

• TRT Terms: Accelerators (Materials); Curing agents; Durability; Ferrocement; Microwaves; Precast concrete; Roofs; Slabs; Strength of materials; Temperature
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01000583
• Record Type: Publication
• ISBN: 087031159X
• Files: TRIS
• Created Date: May 23 2005 11:27AM