CARBONATION DEGREE AS DURABILITY CRITERIA FOR AUTOCLAVED AERATED CONCRETE

This paper deals with the durability and its criteria for Autoclaved Aerated Concrete (AAC) panels. Cracking, panel bending properties, compressive strength, drying shrinkage, and carbonation degree were investigated for field AAC panels aged 4-33 years. When the carbonation degree was >50%, the AAC panels showed cracking and degradation in span-deflection ratio, compressive strength, and drying shrinkage. Therefore, in this paper, the authors propose the durability criteria for AAC as: when the degree of carbonation of an AAC panel exceeds 50% as defined in this work, it may be considered as deteriorated. With this criteria, acrylic-resin-finished AAC panels were 1.5 times more durable than non-finished ones. Also, water-repellent AAC panels had twice the durability as normal ones.

• Corporate Authors:

  American Concrete Institute (ACI)

  38800 Country Club Drive
  Farmington Hills, MI  United States  48331
• Authors:
  • Matsushita, F
  • Shibata, S
• Conference:
  • Fifth CANMET/ACI International Conference on Durability of Concrete
  • Location: Barcelona, Spain
  • Date: 2000-6-4 to 2000-6-9
• Publication Date: 2000

Language

• English

Media Info

• Features: Figures; References;
• Pagination: p. 1123-34

Subject/Index Terms

• TRT Terms: Aeration; Autoclave curing; Carbonation; Compressive strength; Concrete curing; Concrete tests; Durability; Service life; Structural deterioration and defects; Structural materials; Waterproofing materials
• Uncontrolled Terms: Concrete panels
• Subject Areas: Bridges and other structures; Design; Highways; Materials; I24: Design of Bridges and Retaining Walls; I32: Concrete;

Filing Info

• Accession Number: 00976395
• Record Type: Publication
• Report/Paper Numbers: SP-192-68
• Files: TRIS
• Created Date: Jul 2 2004 12:00AM