Development of lightweight concrete using prickly pear fibres

Kammoun, Zied; Trabelsi, Abderraouf

doi:10.1016/j.conbuildmat.2019.03.167

Cited by 29 publications

(11 citation statements)

References 25 publications

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“…This fact corroborates the results observed for the composites. According to Kammoun and Trabelsi 35 the decrease in compressive strength to vegetable fibers from a cementitious matrix may be related to low mechanical strength of inclusions, to the increase in porosity in the matrix due to the entry of air or lower adhesion of fiber/matrix.…”

Section: Compressive Testmentioning

confidence: 99%

Influence of Different Types of Treatments on Amazonian Vegetable Fibers on the Performance of Mortars Based on Portland Cement, Metakaolin and Fly Ash

2021

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This study aimed to evaluate the physical, chemical, and mechanical properties of different Amazonian vegetable fibers to produce cementitious mortars reinforced with different types of vegetable fibers from the Amazon. Also, to analyze the influence of different types of chemical and physical treatments, on the direct tensile strength of vegetable fibers, water absorption of vegetable fibers and on the mechanical properties of compressive strength, flexural strength, and water absorption of mortars. Four vegetable fibers from the Amazon rainforest, from the Upper Rio Negro region (piassava, jute, tucum and razor grass) were used to produce cement composites with 50% Portland CPII-F cement and additions of supplementary cement materials (40% metakaolin and 10% fly ash), with cement mortar and sand trace 1:2:0.60. The cementitious composites were subjected to two types of curing: initial curing in air followed by final curing in water and curing in a pressurized autoclave with CO 2 , both for 28 days. The treatments applied to the fibers were: washing with hot water; hornification; chemical treatment with sodium hydroxide and hybridization (hot water washing coupling, hornification, sodium hydroxide (NaOH) and application of hydrogen peroxide (H 2 O 2 )). As a result, the hybridization treatment increased the mechanical strength of the tucum fiber from 67.20 MPa (untreated fiber) to 318.80 MPa (treated), corroborating the increase in the crystallinity index from 59.84% to 66.73%. The flexural strength of cementitious composites reinforced with 4.5% tucum fibers and razor grass submitted to curing in an autoclave with CO 2 was, respectively, 49.61% and 61.75% higher than the reference composite (without fibers) in the water curing. Therefore, both the autoclave cure and the hybridization treatment proved to be viable for its application in composites with vegetable fibers.

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Section: Compressive Testmentioning

confidence: 99%

Influence of Different Types of Treatments on Amazonian Vegetable Fibers on the Performance of Mortars Based on Portland Cement, Metakaolin and Fly Ash

2021

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“…Its use for concrete reinforcement has also been evaluated. Kammoun and Trabelsi (2019) included Opuntia fiber meshes (previously treated with hot water) of different dimensions (2 × 2, 3 × 3 and 5 × 5 cm) in different proportions (5, 10 and 15 kg/m 3 ) in a sand, gravel, Portland cement and water mixture. A 170% flexural strength improvement was achieved, while weight and thermal conductivity were reduced up to 25% and 42%, respectively.…”

Section: Fiber Applicationsmentioning

confidence: 99%

“…Furthermore, fibers heterogeneous structure suggests that the mechanical characteristics in the longitudinal direction are better than in the transverse direction. Moreover, the longer the fiber, the better the flexural resistance and thermal conductivity but the lower the compression resistance (Kammoun and Trabelsi 2019).…”

Section: Comparative Analysismentioning

confidence: 99%

OpuntiaFiber and Its Potential to Obtain Sustainable Materials in the Composites Field: A Review

Castellano

Marrero-Alemán

Ortega

2021

Journal of Natural Fibers

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Opuntia spp. is a plant widely distributed in the world that has traditionally been used in the food sector. Alternatively to the conventional uses of this plant, this work gives an overview of current knowledge about Opuntia fiber, focusing on several papers which have reinforced polymer matrices with this species. Opuntia cladodes are formed by a network of fibers with a hexagonal reticular hierarchical structure, which is believed to be responsible for their mechanical properties. Opuntia fiber has a cellulose content about 50% and a density (1.54 g/cm 3 ) similar to conventional fibers such as abaca (1.5 g/cm 3 ), jute (1.3 g/cm 3 ) and sisal (1.5 g/cm 3 ). Matrices such as polylactic acid (PLA) and polypropylene (PP) have been reinforced with Opuntia fibers and with ground cladodes, mainly by compression molding, increasing the tensile elastic modulus up to 135%. Opuntia fibers also offer good properties against energy absorption, being adequate for the design of lightweight materials with these characteristics. Further studies should be undertaken in order to establish the appropriate parameters to optimize fiber extraction, improve fibermatrix compatibility and determine a general trend despite the plant own variability.摘要仙人掌是一种广泛分布于世界各地的植物, 传统上用于食品部门. 除了这种植物的常规用途之外, 这项工作概述了目前关于仙人掌纤维的知识, 重点介绍了几篇用仙人掌纤维增强聚合物基体的论文. 仙人掌枝状体由具有六角形网状层次结构的纤维网络构成, 这被认为是其机械性能的原因. 仙人掌纤维的纤维素含量约为50%, 密度 (1.54 g/cm3) 类似于传统纤维, 如阿巴卡 (1.5 g/cm3)、黄麻 (1.3 g/cm3) 和剑麻 (1.5 g/cm3). 聚乳酸 (PLA) 和聚丙烯

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“…In this sense, Opuntia , also known as barbary fig, cactus pear, and prickly pear [ 13 ], is presented as a candidate to consider. It is a species belonging to the Cactaceae family that has historically been used as food [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Opuntia spp. Fibre Characterisation to Obtain Sustainable Materials in the Composites Field

et al. 2021

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Some studies have evaluated the use of Opuntia as reinforcement for polymeric matrices, obtaining good results in energy absorption tests and increasing the tensile elastic modulus. However, no studies focusing on the previous characterisation of the fibres and their treatment to improve compatibility with polymeric matrices have been found. This work analyses the chemical composition of Opuntia maxima (OM) and Opuntia dillenii (OD) cladodes and fibre, studying how different treatments influence it. AOAC 2000 methods were used to determine non-structural components and the Van Soest method was used to estimate structural components. Surface characteristics of the samples were also evaluated by Fourier Transform Infrared Spectroscopy (FTIR). Opuntia fibre presented higher cellulose (50–66%) and lignin (6–14%) content and lower hemicellulose (8–13%) content than Opuntia cladodes (9–14% cellulose, 20–50% hemicellulose, 1–4% lignin). Despite the variability of lignocellulosic materials, OD cladodes treated with water and acetic acid achieved an increase in the structural components. Alkaline fibre treatment removed pectin and hemicellulose from the fibre surface, slightly increasing the cellulose content. Future research should evaluate whether the treated Opuntia fibre can improve the mechanical properties of reinforced polymer.

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Development of lightweight concrete using prickly pear fibres

Cited by 29 publications

References 25 publications

Influence of Different Types of Treatments on Amazonian Vegetable Fibers on the Performance of Mortars Based on Portland Cement, Metakaolin and Fly Ash

Influence of Different Types of Treatments on Amazonian Vegetable Fibers on the Performance of Mortars Based on Portland Cement, Metakaolin and Fly Ash

OpuntiaFiber and Its Potential to Obtain Sustainable Materials in the Composites Field: A Review

Opuntia spp. Fibre Characterisation to Obtain Sustainable Materials in the Composites Field

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