Reuse of waste sludge from papermaking process in cement composites
Reuse of waste sludge from papermaking process in cement composites
复制标题
造纸过程中的废污泥在水泥复合材料中的再利用
DOI：
10.1002/pen.23283
复制
发表时间：
2013
影响因子：
3.2
通讯作者：
Kambiz Rashedi
中科院分区：
文献类型：
--
作者：
R. Yadollahi;Y. Hamzeh;A. Ashori;S. Pourmousa;M. Jafari;Kambiz Rashedi
造纸污泥是制浆造纸过程中产生的一种废渣，造纸厂产生的大量废渣给环境带来了巨大的压力。本工作旨在探索利用PS固体废弃物制备PS/水泥复合材料制品的可能性。当PS含量为40、50和60wt%，粘结剂用量为0、10和15wt%，氯化钙为0和5wt%时，制备了350×270×12mm3的板材。每种处理至少制造三个复制品，并对板的一些机械和物理性能进行评估。试验结果表明，随着PS含量的增加，试件的抗弯强度和内强度都有所下降，在PS含量为40wt%时达到最大值。PS含量对力学性能的负面影响可以用PS比水泥更弱，粘结能力降低来解释。螺丝钉拔出值高达22.7kPa.随着PS掺量的增加，水泥砂浆的吸水率和厚度膨胀率显著增加，体积密度相应降低。总的来说，随着胶粘剂和氯化钙含量的增加，板材的各项性能都有所改善。结果表明，随着板材密度的增加，板材的力学性能和物理性能都有所提高。结果表明，PS在开发高附加值建筑构件方面具有良好的回收利用潜力。波兰姆。英语。《科学》，2013。2012美国塑料工程师学会
Papermaking sludge (PS), a waste residue from the pulp and paper processing, has brought great pressure on the environment because of large quantities that are produced in paper mills. This work was carried out to explore the possibility of making PS/cement composite products using solid waste of PS. Boards measuring 350 × 270 × 12 mm3 were manufactured using PS contents of 40, 50, and 60 wt%, adhesive dosages of 0, 10, and 15 wt%, and 0 and 5 wt% of calcium chloride as an accelerator. At least three replications were fabricated for each treatment, and some mechanical and physical properties of the boards were evaluated. Test results showed that the bending and internal strengths of the specimens decreased with an increase in the PS content, and the maximum values were obtained at PS loading of 40 wt%. The negative influence of PS content on the mechanical properties can be explained by the reduced bonding ability because of weaker PS compared with cement. Screw withdrawal values were up to 22.7 kPa. Water absorption and thickness swelling of cement mortar considerably increased with increased content of PS, with a corresponding reduction of bulk density. In general, all properties of the boards were improved when the adhesive and calcium chloride contents were increased. The results showed that an increase in board density improved the mechanical and physical properties. Finally, results showed that PS has good potential for recycling and utilization in developing value-added building components. POLYM. ENG. SCI., 2013. © 2012 Society of Plastics Engineers