The Bond Response of Concrete Brick with Recycled Tire Chip as Partial Replacement of Aggregate Applied in the Non-Structural Masonry Wall

Abstract

The walls of buildings are made from several types of materials, including red and concrete bricks, glass fiber-reinforced cement, wood and glass. Concrete brick has many advantages. It is relatively cheap, with more economical mortar usage and it has an easier and faster installation. Unfortunately, the main disadvantage of concrete brick is that it is heavier than many other wall building materials. In order to reduce the weight of concrete brick as well as to dispose waste tire safely, the objective of this study is to investigate the mechanical effect of the application of recycled tire as a partial replacement of aggregates in the concrete brick. The application of recycled tire in concrete brick with high volume protects the environment from pollution due to the waste tire. The dimension of concrete brick is 345 mm of length, 90 mm of width and 100 mm of thickness. The recycled tire utilized in the study is in the form of chips with dimensions of 4 mm × 4 mm × 20 mm. The chips are mixed with mortar in order to form the concrete brick. The content of recycled tire chips in concrete brick without superplasticizer is 0, 15, 30, 45 and 60% and with superplasticizer it is 0%, 50%, 55%, 60%, 65%, 70% and 75% by volume. Several types of testing for concrete brick with recycled tire are carried out, focusing on the unit weight, the compressive strength, the flexural strength and the shear strength. It has been found out that concrete brick containing 75% of recycled tire chips reduces the unit weight of concrete brick by ~63% compared to concrete brick without recycled tire chips. Moreover, the highest compressive, flexural and shear strengths are 1.32 N/mm2 for concrete brick with 50% of recycled tire, 0.063 MPa for concrete brick with 55% of recycled tire and 0.064 MPa for concrete brick with recycled tire content of 65%.