Performance Analysis Of Expanded Clay And Polypropylene Fibre-Based Lightweight Structural Concrete Beams

Abstract

This study focuses on structural lightweight concrete (SLWC) beams reinforced with polypropylene fiber (PP) and expanded clay particles. The PP fiber volume percentage is the primary topic of this study. We employed volume fractions of 0.1%, 0.2%, 0.3%, and 0.4% for the PP fibers in the study. We experimented with various ECA replacement dosages to achieve the optimal balance of workability and strength. The optimal quantity of ECA to replace, according to the studies, is 20%. The mechanical, microstructural, and durability aspects of the specimens should be examined. The specimens should have dimensions of 150 x 150 x 150 mm, 150 x 300 mm, 100 x 100 x 500 mm, and 100 x 50 mm, respectively. We measured the moduli of rupture and modulus of elasticity for control and structural lightweight concrete, both with and without PP fibers. We used these tests to assess the water absorption, porosity, sorptivity, and acid resistance of control concrete, structural lightweight concrete with and without PP fibers, and specimens sized 150 x 150 x 150 mm cube and 100 x 50 mm disc. This study focuses on lightweight structural concrete beams reinforced using expanded clay aggregates (ECA) and polypropylene fibers. To determine if these novel composite beams are sustainable, we will examine their mechanical, thermal, and durability properties. The experimental program creates lightweight concrete beams by adjusting the quantities of expanding clay particles and polypropylene fibers. Standardized testing evaluates mechanical parameters such as compressive strength, flexural strength, and modulus of elasticity. We also consider the heat insulation and thermal conductivity of composite beams for green buildings. Researchers test lightweight concrete beams to ensure that they can survive freeze-thaw cycles and chloride ion penetration. We look at how expanded clay particles, polypropylene fibers, and the cementitious matrix stick together by using scanning electron microscopy and X-ray powder diffraction. This study investigates the use of expanded clay and polypropylene fibers in lightweight concrete technology to improve structural performance while reducing material density. Overall, this research supports green and efficient building practices by emphasizing the need to adopt lightweight materials with increased mechanical qualities in building structures.