Experimental Investigation on the Mechanical Properties of Natural Fiber Reinforced Concrete

Abstract

Recently, addition of various natural fibers to high strength concrete has aroused great interest in the field of building materials. This is because natural fibers are much cheaper and locally available, as compare to synthetic fibers. Keeping in view, this current research conducted mainly focuses on the static properties of hybridized (sisal/coir), sisal and coir fiber-reinforced concrete. Two types of natural fibers sisal and coir were used in the experiment with different lengths of 10, 20 and 30 mm and various natural fiber concentrations of 0.5%, 1.0%, and 1.5% by mass of cement, to investigate the static properties of sisal fiber reinforced concrete (SFRC), coir fiber reinforced concrete (CFRC) and hybrid fiber reinforced concrete (HFRC). The results indicate that HFRC has increased the compressive strength up to 35.98% with the length of 20 mm and with 0.5% concentration, while the CFRC and SFRC with the length of 10 mm and with 1% concentration have increased the compressive strength up to 33.94% and 24.86%, respectively. On another hand, the split tensile strength was increased by HFRC with the length of 20 mm and with 1% concentration, CFRC with the length of 10 mm and with 1.5% concentration, and SFRC with the length of 30 mm and with 1% concentration have increased up to 25.48%, 24.56% and 11.80%, respectively, while the HFRC with the length of 20 mm and with 0.5% concentration has increased the compressive strength of concrete but has decreased the split tensile strength up to 2.28% compared to PC. Overall, using the HFRC with the length of 20 mm and with 1% concentration provide the maximum output in terms of split tensile strength.

Comprehensive Test and Evaluation Analysis of Permeable Concrete (PC) Clogging by Using Steel Slag

“…where P is the porosity of PC (%), m1 is the mass of the test specimen in water (g), m2 is the quality of the test specimen after drying in the drying box for 24 h (g), Ρ w is the density of water (g/cm 3 ), and V is the volume of the test specimen (cm 3 ). e porosity measured by the gravimetric method and the measurement data is shown in Figure 1.…”

“…Recently, due to the rapid urbanization and increasing consumption of natural resources, researchers are investigating various strategies to protect and restore natural ecosystems around the world to avail an economical and environmentally friendly way [1][2][3]. PC is the most widely used building material in sponge city construction because of its environmentally friendly characteristics.…”

Effects of Strain Rate and Fiber Content on the Dynamic Mechanical Properties of Sisal Fiber Cement-Based Composites

“…However, unlike most plant fibers, sisal fibers are resistant to friction, corrosion, very high or low temperatures, and humidity [9]. Therefore, in recent years, considerable attention has been paid to renewable sisal fibers [10][11][12][13][14].…”

“…The popularization and application of sisal fiber-reinforced cement-based composites (SFRCCs) have broadened the comprehensive utilization of sisal biological resources and reduced the consumption of polypropylene, polyvinyl alcohol fiber, carbon fiber, glass fiber, steel fiber, and cement in composites. Therefore, SFRCCs have the dual significance of efficient resource utilization and good environmental protection, which has led to widespread interest in them [13,15,16]. In normal use, building structures are inevitably subjected to accidental impacts, which may cause local component and structure damage or even total structure collapse.…”

Effect of Rape Straw Fiber on Mechanical Properties and Microstructure of Fly Ash Concrete

“…erefore, many studies have been conducted to determine the in uence of the content size and aspect ratio of natural plant ber on the mechanical properties of concrete [4][5][6][7]. Manniello et al [8] investigated the e ect of the length-diameter ratio of asparagus ber on the tensile properties of concrete blocks.…”