Journal ArticleDOI
The hornification of vegetable fibers to improve the durability of cement mortar composites
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TLDR
In this paper, the effects of the previous hornification of the vegetable fibers on the mechanical performance and durability of softwood kraft pulp and cotton linters cement mortar composites were investigated.Abstract:
The use of vegetable fibers to reinforce a cement-based matrix has its weakest point in terms of durability. The alkalinity of the matrix and the volumetric instability of the fibers are the main causes of the loss of resistance of vegetable fiber-reinforced cement mortar composites. The aim of this study was to determine the effects of the previous hornification of the vegetable fibers on the mechanical performance and durability of softwood kraft pulp and cotton linters cement mortar composites. For this purpose, composites containing 4 wt.% of the hornificated fibers and the untreated ones were prepared with both fiber types. The mechanical performance of these composites was tested after 28 days of cure treatment and after aging with four wet–dry cycles. Results indicated that the previous treatment of fibers had beneficial effects on the mechanical performance and durability of the resulting cementitious composites.read more
Citations
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Cellulosic fiber reinforced cement-based composites: A review of recent research
TL;DR: A review of the research done during the last years in the area of the cement-based composites reinforced with cellulose fibers is presented in this article, where the main achievements found have been the development of durable cement composites with optimized fiber-matrix adhesion.
Journal ArticleDOI
Plant-based natural fibre reinforced cement composites: A review
TL;DR: In this article, a summary of research progress on plant-based natural fibre reinforced cement-based composites is presented, which includes the use of natural fibres as internal curing agents and durability enhancement materials.
Journal ArticleDOI
Degradation mechanisms of natural fiber in the matrix of cement composites
Jianqiang Wei,Christian Meyer +1 more
TL;DR: In this paper, the degradation mechanisms of natural fiber in the alkaline and mineral-rich environment of cement matrix are investigated by designing a contrast test to embed sisal fibers in pure and metakaolin modified cement matrices.
Journal ArticleDOI
Green concrete partially comprised of farming waste residues: a review
TL;DR: In this paper, a review on the utilization of emerging alternative farming waste materials in concrete such as from the farming of bamboo, corn, wheat, olive, sisal, seashells and more is carried out with the aim of examining the benefits and shortcomings of using these materials.
Journal ArticleDOI
Fracture energy of natural fibre reinforced concrete
Ildiko Merta,Elmar K. Tschegg +1 more
TL;DR: In this article, the fracture energy of concrete reinforced with natural fibres of hemp, elephant grass, and wheat straw was investigated using the wedge splitting test (WST) method.
References
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Journal ArticleDOI
An Empirical Method for Estimating the Degree of Crystallinity of Native Cellulose Using the X-Ray Diffractometer
TL;DR: In this paper, an empirical method for determining the crystallinity of native cellulose was studied with an x-ray diffractometer using the focusing and transmission techniques, and the influence of fluctuations in the primary radiation and in counting and recording processes have been determined.
Book
Fiber-Reinforced Cement Composites
TL;DR: In this article, the basic concepts of mechanical properties of fibers - tension, bending constitutive materials mixture proportions - mixing and casting procedures properties of freshly mixed FRC properties of hardened FRC compression, tension and flexure FRC under impact and fatigue loading creep, shrinkage and long-term performance of FRC plastic drying shrinkage fiber-reinforced shotcrete glass fiber reinforced cement (GFRF) thin sheet products slurry infiltrated fiber concrete (SIFCON).
Journal ArticleDOI
Durability of alkali-sensitive sisal and coconut fibres in cement mortar composites
TL;DR: In this article, the authors present the results of an experimental program designed to assess the durability of sisal and coconut fibres exposed to alkaline solutions of calcium and sodium hydroxide.
Journal ArticleDOI
Development of vegetable fibre–mortar composites of improved durability
TL;DR: In this paper, the authors present several approaches used to improve the durability performance of VFRMCs incorporating sisal and coconut fibres, such as carbonation of the matrix in a CO2-rich environment, immersion of fibres in slurried silica fume prior to incorporation in the ordinary Portland cement (OPC) matrix, partial replacement of OPC matrix by undensified silica Fume or blast-furnace slag, and a combination of fibre immersion and cement replacement.
Journal ArticleDOI
Physical and mechanical properties of durable sisal fiber–cement composites
Flávio de Andrade Silva,Romildo Dias Toledo Filho,João de Almeida Melo Filho,Eduardo de Moraes Rego Fairbairn +3 more
TL;DR: Sisal fiber-cement composites reinforced with long unidirectional aligned fibers were developed and their physical-mechanical behavior was characterized in this article, where flat and corrugated sheets were cast by a manual lay-out of the fibers in a selfcompacted cement matrix and compressed with a pressure of 3MPa.