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首页> 外文会议>The ninth international inorganic-bonded composite materials conference >Construction Products from Waste Fibre Resources:Cement Bonded Sludge Board
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Construction Products from Waste Fibre Resources:Cement Bonded Sludge Board

机译：废纤维资源的建筑产品：水泥粘结污泥板

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The Building Research Establishment, UK. Is engaged on an extensive programme ofrnresearch aimed to develop innovative construction products utilising paper mill waste. Arnseries of products, including renders, blocks and clays, and panel products, have beenrndeveloped. This paper sets out the development of cement bonded sludge boards by usingrndeinking paper sludge.rnDeinking paper sludge was found suitable for the manufacture of cement bonded sludgernboard. The composition of paper sludge was analysed, containing about 40% cellulose fibrernand 50% ash. The fibres are short and fine with average length being about 0.4 mm. Therncompatibility study of sludge -cement mixtures showed tha t the whole hydration process ofrnsludge-cement mixture consisted of four stages. The sludge had a better compatibility withrncement compared to virgin wood fibre used due to the loss of hemicelluloses or otherrnextractives during pulping process. Hydration temperature consistently decreased withrnsludge content increased. Compatibility index, thermal index [I(T, t)], has been developed tornassess optimum hydration parameters. Optimum hydration required a water:cement ratio ofrn0.3 for 5%sludge -95%cement mixtures , 0.4 for 15% sludge-85% cement mixtures and 0.4-rn0.5 for 25% sludge-75% cement mixtures. The performance test of the cement bondedrnsludge boards made indicated that the properties of the sludge boards were closely related tornthe sludge contents. Qualified cement sludge boards can be made with 30% sludge which isrnequal to the percentage of wood chips for the production of cement bonded particleboard.
机译：英国建筑研究机构。致力于一项广泛的研究计划，旨在利用造纸厂的废料开发创新的建筑产品。已经开发了Arnseries产品，包括抹灰，砌块和黏土以及面板产品。本文以脱墨纸污泥为例，对水泥粘结污泥板的发展进行了研究。发现脱墨纸污泥适用于生产水泥粘结污泥板。分析了纸污泥的组成，其中包含约40％的纤维素纤维和50％的灰分。纤维短而细，平均长度约为0.4mm。污泥与水泥混合料的热相容性研究表明，污泥与水泥混合料的整个水化过程包括四个阶段。与使用的原始木纤维相比，污泥具有更好的相容性，这是因为制浆过程中损失了半纤维素或其他提取物。水化温度持续下降，污泥含量增加。已开发出相容性指数，热指数[I（T，t）]来评估最佳水合参数。最佳水合要求：5％污泥-95％水泥混合物的水：水泥比为rn0.3，15％污泥-85％水泥混合物为0.4，rn5％污泥-75％水泥混合物为0.4-rn0.5。水泥粘结污泥板的性能测试表明，污泥板的性能与污泥含量密切相关。合格的水泥污泥板可以用30％的污泥制成，该污泥等于用于生产水泥粘合刨花板的木屑的百分比。

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