Utilization of Graphene Oxide to Synthesize High-Strength Cement-Based Adhesive

摘要

Adhesive materials play a key role in any strengthening system for concrete structures. Traditional organic adhesives have a major limitation of poor fire resistance; hence, developing an alternative inorganic material is needed. This paper aims to present an innovative cement-based adhesive, which has been fabricated and verified using a number of tests. A nanomaterial represented by graphene oxide and a series of cementitious materials was used in this work. Fresh properties such as setting time and flowability were tested to ensure suitability for practical applications. Mechanical properties were tested in terms of compressive, tensile, and pull-off strengths. The experimental results proved the adequate performance of the innovative cement-based adhesive in terms of fresh properties and mechanical strength. The results show that the adhesive mixture has a pot life up to 120min with a flow of 7.5%, and remarkably high 13.8MPa tensile, 101MPa compressive, and 1.2MPa pull-off strengths.