水稻秸秆的理化特性

A. Abakar, Abdallah Dadi Mahamat, A. Donnot, J. Tanguier, R. Benelmir
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引用次数: 2

摘要

本研究旨在确定稻草的物理特性,并强调稻草中糖的存在。在建筑中使用天然纤维作为加固材料已经存在了几千年。它们与粘土混合制成建筑材料。这种添加物可以避免裂缝,有时还有助于提高抗弯强度。研究人员在天然纤维中发现了高含量的糖。生物质中所含的这种糖是建筑材料凝固延迟和硬化的根源。在天然纤维中发现的另一个重要缺陷是它的高吸水潜力。这种亲水性是由于吸管固有的多孔性。本文旨在确定稻草的物理特性,并强调稻草中糖的存在。首先,测定了稻草的密度和吸水率。然后进行了化学试验,测定了矿物成分(灰分)、木质素、半纤维素的含量,最后推导出纤维素的含量。像大多数农作物秸秆一样,水稻秸秆含有高水平的糖。与其他建筑材料相比,它的密度也很低。它大约是450公斤/立方米。稻草还具有较高的吸水率。吸收率(在)水中浸泡5min时,其吸收率达到234%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Physical and Chemical Characteristics of Rice Straw
This study aims to determine the physical characteristics of rice straw and highlights the presence of sugar in rice straw. The use of natural fibers as a reinforcement in construction has existed for millennia. They are mixed with clay to make building materials. This addition avoids cracks and sometimes contributes to flexural strength. Researchers have detected a high level of sugar in natural fibers. This sugar contained in the biomass is at the origin of the setting delay and the hardening of the building materials. Another not least significant defect found in natural fiber is its high water absorption potential. This hydrophilic character is due to the intrinsic porosity of the straws. This article aims to determine the physical characteristics of rice straw and highlights the presence of sugar in rice straw. First, the density and water absorption rate of the rice straw were determined. Then chemical tests were carried out to determine the rate of mineral constituents (ash), lignin, hemicellulose and finally the rate of cellulose is deduced. Like most crop straws, rice straw contains a high level of sugar. It also has a very low density compared to other building materials. It is around 450 kg/m3. Rice straw also has a high water absorption rate. The absorption rate absorption rate (At) 5 min of immersion in water, its absorption rate reaches 234%.
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