Improvement of Mechanical Properties in Polypropylene‐ and Glass‐Fibre‐Reinforced Peach Shell Lightweight Concrete

Abstract

e use of the polypropylene fibre and glass fibre with different volume fractions to improve the mechanical properties of peach shell lightweight concrete was investigated in this study. e volume fractions of 0.25%, 0.50%, and 0.75% were used for each fibre.e results showed that, as the polypropylene fibre and glass fibre were added into peach shell concrete, the density was reduced by up to 6.1% and the compressive strength, splitting tensile strength, and flexural strength were increased by 19.1%, 54.3%, and 38.6%, respectively. e highest compressive strength, splitting tensile strength, and flexural strength of 29.3 MPa, 2.87 MPa, and 3.09 MPa, respectively, were produced by peach shell concrete with 0.75% glass fibre. e results indicated that the incorporation of fibres significantly enhanced the postfailure toughness of peach shell concrete. It was found that the glass fibre was more effective than the polypropylene fibre in improving the mechanical properties of peach shell concrete. Although the incorporation of fibres slightly increased the water absorption and porosity, the type and content of fibres had no significant effect on water absorption and porosity. erefore, the mechanical properties of peach shell lightweight concrete can be improved by adding polypropylene fibres and glass fibres.

Performance Evaluation of the Fiber-Reinforced Cement Composites Blended with Wheat Straw Ash

“…e addition of PP fibers resulted in an increased flexure strength. Similar results were obtained and reported in previous studies [35][36][37] in which flexure strength of the mortar specimens increased with the inclusion of fibers. Daneti et al [35] have reported in their study that an increment of 25% in the flexure tensile strength of the foamed concrete specimens was observed for 2% fiber addition.…”

“…e increase in the tensile strength due to the addition of PP fibers has been previously reported. For example, the results of the study conducted by Wu et al [37] reveal that the splitting tensile strength of the specimens increased by 10-37% for PP fiber addition of 0.25-0.75% (volume fraction). e tensile stress transferred to the fibers precludes the propagation of microcracks, thus, amplify the splitting tensile strength [38].…”

Effect of fibre type and content on performance of bio-based concrete containing heat-treated apricot shell

“…12. When the ASC without any fibres was subjected to tension, cracks directly penetrated through the concrete matrix and concrete was severely damaged, which was considered as brittle failure [54]. Moreover, most of the AS aggregate on either side of the crack was broken under the tensile stress due to the low strength of the AS.…”

Experimental Study on the Performance of Graded Glass Fiber Reinforced Concrete (G-GRC) Based on Engineering Application

“…Wang et al [ 17 ] studied the reinforcement effect of glass fiber and carbon fiber on the mechanical properties of fiber reinforced polymer concrete through experiments. Wu et al [ 18 ] experimented and studied the effects of polypropylene fiber and glass fiber with different volume fractions on the mechanical properties of peach shell lightweight concrete and proved the enhancement effect of two kinds of fiber mixing on the mechanical properties of the concrete. Noh et al [ 19 ] conducted an experimental study on the engineering properties of carbon fiber and glass fiber reinforced recycled polymer concrete.…”