Repair, Evaluation, Maintenance, and Rehabilitation Research Program. Review of the State of the Art for Underwater Repair Using Abrasion-Resistant Concrete

Download or read book Repair, Evaluation, Maintenance, and Rehabilitation Research Program. Review of the State of the Art for Underwater Repair Using Abrasion-Resistant Concrete written by GERWICK (BEN C) INC SAN FRANCISCO CA. and published by . This book was released on 1988 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concrete hydraulic structures that are subjected to severe abrasion require periodic inspection, evaluation, and repair. Not only are these procedures costly and sometimes disruptive, but repeated repairs also make guaranteeing the integrity of the underlying layers difficult. This review was conducted, on an international level, to identify new techniques and potential areas of research that might lead to more abrasion-resistant materials and more effective repair methods and that would avoid the high cost and disruptions associated with dewatering. Topics of study in the review include: (a) underwater inspection, (b) concrete mixtures, (c) underwater placement of concrete, (d) underwater compaction of concrete, (e) polymer concretes and coatings, (f) surface preparation, and (h) support vehicles. Keywords: Concrete admixtures, Hydro-valve, Pneumatic valves, Polymer concrete, Robotics, Support vessels.(jes).