INFLUENCE OF THE INCORPORATION OF COCONUT FIBERS (Cocos nucifera L.) IN THE MECHANICAL PERFORMANCE OF ADOBES

Abstract

The search for sustainable construction materials has driven the use of natural waste in civil construction, including coconut fiber (Cocos nucifera L.), due to its environmental and functional potential. This study evaluated the influence of the incorporation of coconut fibers from the beach on the physical and mechanical properties of adobe bricks, with emphasis on compressive strength and water absorption. The experiment was conducted in a completely randomized design, with four treatments corresponding to the addition of 0%, 1.5%, 3.0% and 4.5% of coconut fiber, with four replications. Immersion water absorption, dimensional uniformity and compressive strength were analyzed, determined by means of a universal press test. The results indicated that the incorporation of 75 g of coconut fiber provided the best mechanical performance, with greater compressive strength and lower water absorption compared to the control treatment. On the other hand, higher fiber contents compromised the mechanical strength, possibly due to the reduction of compaction and cohesion of the adobe matrix. It is concluded that the moderate addition of coconut fiber improves the physical and mechanical performance of the adobes, configuring itself as a sustainable and technically viable alternative, as long as it is used in adequate proportions.