Preparation and performance of graphene oxide/self-healing microcapsule composite mortar
Abstract To meet the unique requirements for concrete durability and resistance in power transmission projects in Northwest China. Microcapsules were created physically using sodium silicate and bentonite as the capsule core and ethyl cellulose as the capsule wall. By using graphene oxide as a conductive medium, standard specimens of cement-based materials were created. Indoor experiments and micro technology were used to determine the optimal ratio of graphene-microcapsules, study the effects of graphene content, microcapsule content, and curing age on compressive strength, resistance, and self-repairing effect of the composite material. The average microcapsule size was 1.25 mm, according to the findings. The microcapsule was a relatively regular sphere with a rough surface and dense structure. The recommended content was 2% microcapsules and 0.1% graphene oxide. The compressive strength first increased and then decreased as the number of microcapsules and graphene oxide increased, and the resistance gradually increased. The repairing rate of compressive strength was 57% after the cracks were repaired, and the recovery rate was 81%.