Cementitious patch repair of concrete: specification and quality control testing

The repair of concrete structures has rapidly increased since the accelerated construction boom of the 1960s, 70s and 80s, associated with the premature deterioration of many concrete structures around the world. Specifications and quality control have not kept pace thereby leading to poor practices and consequently premature failure of many concrete repairs. Prior to the commencement of any patch repair of concrete, the affected concrete structure or component must be assessed to determine the influence of spalled, deteriorated, damaged or honeycombed concrete on load bearing capacity, serviceability and durability. This paper presents the main types of patch repair of concrete structures using cementitious repair materials and discusses the various specification requirements for the supply, quality and performance criteria of materials, surface preparation, mixing and application, curing and protection, finishing and surface condition, relevant inspection and quality control testing and acceptance criteria for the repair of concrete structures using cementitious repair materials. The paper also covers OH&S and environmental issues, outlines the main phases of a cementitious repair and presents a step by step repair sequence for the main types of patch repair. (a) For the covering entry of this conference, please see ITRD abstract no. E214936.

• Record URL:
  http://arrbknowledge.com
• Authors:
  • ANDREWS-PHAEDONOS, F
• Publication Date: 2006

Language

• English

Media Info

• Pagination: 15P
• Serial:
  • AUSTROADS BRIDGE CONFERENCE, 6TH, 2006, PERTH, WESTERN AUSTRALIA
  • Publisher: AUSTROADS

Subject/Index Terms

• TRT Terms: Bridges; Building materials; Concrete; Conferences; Failure; Maintenance; Mathematical analysis; Methodology; Patching; Properties of materials; Structures
• ITRD Terms: 6471: Analysis (math); 3455: Bridge; 4755: Concrete; 8525: Conference; 3355: Engineering structure; 5520: Failure; 3847: Maintenance; 4555: Material (constr); 9102: Method; 3624: Patching (maintenance); 5925: Properties
• Subject Areas: Bridges and other structures; Design; Maintenance and Preservation; Materials; I24: Design of Bridges and Retaining Walls; I32: Concrete; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 01050994
• Record Type: Publication
• Source Agency: ARRB
• Files: ITRD, ATRI
• Created Date: Jun 11 2007 1:05PM