Title: Underwater Adhesion of Polymethyl Methacrylate Mortars

Author(s): Y. Ohama, K. Demura, S. N. Pareek, and M. A. R. Bhutta

Publication: Symposium Paper

Volume: 137

Issue:

Appears on pages(s): 93-108

Keywords: adhesion; bonding; coupling agents; mortars (material); strength; polymethyl methacrylate; underwater construction; Materials Research

DOI: 10.14359/4073

Date: 6/1/1993

Abstract:
There is no reported work on the placing or bonding of polymethyl methacrylate (PMMA) mortars underwater. In this paper, PMMA mortars with and without coupling agents are prepared, and the applicability of underwater placing and bonding of PMMA mortars is examined, with the objective of performing underwater construction, which has gained popularity in recent years. PMMA mortars are tested for adhesion in flexure and tension to preplaced PMMA mortar substrates, and for flexural and tensile strength. It is concluded from the test results that the strength properties of PMMA mortars placed and bonded underwater are somewhat improved by the addition of a silane coupling agent, permitting the mortars to develop suitable strength and adhesion. PMMA mortars are applicable for underwater concreting if their appropriate binder system formulations are selected.