In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Become an ACI Member
Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
American Concrete Institute
38800 Country Club Dr.
Farmington Hills, MI
Feedback via Email
Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Development of a Fly Ash and Epoxy Based High-Performance Grout for the Repair of Offshore Platforms
Author(s): T. S. Thandavamoorthy, A. G. Madhava Rao,
and A. R. Santhakumar
Publication: Special Publication
Appears on pages(s): 239-258
Keywords: damage; ferrocement jackets; fly ash; high-performance
grout; innovative repair technique; offshore platforms; tubular joints
Abstract:Offshore platforms serve as artificial bases, supporting drilling and production facilities above the elevation of waves. They can be damaged due to wave induced fatigue in synergy with chloride-induced corrosion. These structures are constructed mainly using cylindrical steel tubular members and the joints, formed at the intersection of members, are most vulnerable to fatigue. An innovative repair technique, which has made use of fly ash and epoxy based high performance grout (HPG) especially developed for this purpose and ferrocement jackets, was proposed in this investigation to rehabilitate fatigue damaged tubular joints. While the average compressive strength of the grout was 85 MPa (12.32 ksi), the average tensile strength was 52 MPa (7.54 ksi). The bond strength of the HPG was almost three times greater than the conventional cement grout. As the specific property, the bond is very high, and achieved without any effort, the term High Performance Grout’ has been used in this paper to disguish it from the conventional technique. The paper presents in detail the necessity and development of the fly ash and epoxy based HPG, the method of repairing the fatigue damaged tubular joint, and the testing of the repaired joint to check the efficacy of the proposed innovative technique.
Click here to become an online Journal subscriber