Investigation of the effect of magnetite (iron oxide) on the mechanical properties of self-compacting concrete

Self-compacting concrete is a concrete that compresses without applying any external energy under its own weight. This concrete, which is a very fluid and fluid mixture, has been studied in recent years to study the effect of minerals on the physical and mechanical properties of self-compacting concrete.Since the country has vast areas of large reserves of iron ore, so in this study, the physical, mechanical and concrete properties of self-compacting magnetite density were studied.In this study, 2, 5 and 10 wt% cement magnetite particles with size 0 to 2 mm were used to determine the mechanical, physical, behavioral and effective parameters of self-compacting concrete. The compressive strength tests, tensile strength, flexural strength and ultrasonic emission velocity were used to study the mechanical properties of the samples.The results showed that with increasing magnetite percentage, the mechanical and physical properties of self-compacting concrete decreased in the early ages, but with the age of the samples, these properties would be compensated. Also, the mechanical properties of the specimens in the 2% difference were not significantly different with the control samples without magnetite.In studying the properties of self-compacting concrete, it was determined that with increasing magnetite percentage, the loss of metadata fractures and the loss of biodiversity and inundations due to reduced adhesion of cement and aggregates and increased porosity and subsequently reduced water absorption.