Evaluation of Strength in Natural Bricks by Using Mineral Admixtures

Abstract

In the construction field nowadays substructures and superstructure are adopted by bricks only for the framed type of structure and also load bearing wall adopted for bricks in super structure works. Last four decades in our Tamil Nadu more number of bricks were used for the buildings. In this work, it is decided to design an alternate to clayey soil with addition of stabilisers such as fly ash, rice husk ash and some mineral admixtures used to manufacturing of bricks as per IS provision standard size. By adopting fly ash with rice husk ash, lime and other fibre such as polypropylene fibre, glass fibre, banana fibre bricks of standard size is casted and tested. The result shows that, the water absorption get reduced and compressive strength get increased by using glass fibre and banana fibre as admixtures for casting of bricks, lime (10%), fly ash (2%), rice husk ash (3%), clayey soil (85%) it gives the compressive strength of 4.5 N/mm². All the experiments were done as per Indian standard codes and promising results were obtained in the study.