Preparation and Properties of Glass Fiber/Plant Fiber Reinforced Cementitious Composites
Because of its low cost, easy access and reproducibility, plant fiber has a wide range of applications in the field of synthetic fibers. Synthetic fibers are added to cement-based materials, which can improve their mechanical properties and give the material new functionalities and applications. Cement-based materials and glass fibers constitute a glass fiber/cement-based composite material. The effects of plant fiber composition and structure on the hydration and mechanical properties of cementitious composites were studied. During the experiment, a variety of rice straw fibers were selected. Straw fiber was subjected to steam explosion and bleaching pretreatment. The results showed that the maximum hydration rate of glass fiber/cement-based composites was reduced after 10 wt.% of rice straw fiber samples were replaced by equivalent amounts of glass fiber/cement matrix composites. The time to reach the maximum hydration rate was prolonged. The prolongation of time increased with the degree of fiber pretreatment. From rice and bamboo pulp, cellulose is extracted as a reinforcing fiber. Vacuum dehydration method was used to prepare cellulose/glass fiber reinforced cement composite material. The introduction of cellulose can reduce the bulk density of the glass fiber/cement composite by 15% to 35%. The mechanical properties of glass fiber/cement composites are improved. When the content of cellulose is 8 wt.%–12 wt.%, the bending resistance of cellulose modified glass fiber/cement composites can be optimized.
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Document Type: Research Article
Publication date: July 1, 2018
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