Research on the Feasibility of Paper Sludge Fly Ash to Replace Concrete Fine Aggregate

被引：0
|
作者：
Wang W.-C. [1 ]
Xue J.-C. [1 ]
Lee M.-G. [2 ]
Lee M.-Y. [1 ]
Lin Y.-C. [1 ]
机构：
[1] Department of Civil Engineering, National Central University, Taoyuan
[2] Department of Civil Engineering, Chaoyang University of Technology, Taichung
来源：
Journal of the Chinese Institute of Civil and Hydraulic Engineering | 2022年 / 34卷 / 01期
关键词：
Cement mortar; Concrete; Fine aggregate; Paper sludge fly ash;
D O I：
10.6652/JoCICHE.202203_34(1).0002
中图分类号：
学科分类号：
摘要：
In Taiwan, the total amount of sludge discharged in 2020 accounted for 8.69% of the total amount of general industrial waste. Currently, incineration is considered an effective method to reduce the volume and decompose the organic matter in the sludge. In this study, Paper Sludge Fly Ash (PSFA) was used to replace fine aggregate in mortar and concrete by different proportions. This research evaluates the feasibility of replacing fine aggregate with PSFA. By investigating the properties of fresh, hardened, durability, and microanalysis of mortar and compressive strength of concrete. It was found that the workability of mortar is significantly affected when using PSFA to replace a part of fine aggregate. When the PSFA replacement ratio is 25% and the water-cement (W/C) ratio is 0.50, the 90 days compressive strength of mortar can reach 101.7 MPa, but the drying shrinkage also increases. Besides, PSFA can hydrate and produce C-S-H colloid, and the unhydrated particles can also produce a filling effect to improve the compactness of concrete. In addition, PSFA can also improve the microstructure of the interfacial transition zone (ITZ) in concrete, and reduce the pore between the coarse and fine aggregates, which can significantly improve the compressive strength of concrete. © 2022, Chinese Institute of Civil and Hydraulic Engineering. All right reserved.
引用
收藏
页码：11 / 20
页数：9
相关论文
共 46 条
  • [1] (2021)
  • [2] Kikuchi R., Vitrification process for treatment of sewage sludge and incineration ash, Journal of the Air and Waste Management Association, 48, 11, pp. 1112-1115, (1998)
  • [3] Lynn C. J., Dhir R. K., Ghataora G. S., West R. P., Sewage sludge ash characteristics and potential for use in concrete, Construction and Building Materials, 98, pp. 767-779, (2015)
  • [4] Chen H. J., Hsueh Y. C., Peng C. F., Tang C. W., Paper sludge reuse in lightweight aggregates manufacturing, Materials, 9, 11, (2016)
  • [5] Frias M., Rodriguez O., Sanchez de Rojas M. I., Paper sludge, an environmentally sound alternative source of MK-based cementitious materials. A review, Construction and Building Materials, 74, pp. 37-48, (2015)
  • [6] Gluth G. J. G., Lehmann C., Rubner K., Kuhne H. C., Reaction products and strength development of wastepaper sludge ash and the influence of alkalis, Cement and Concrete Composites, 45, pp. 82-88, (2014)
  • [7] Garcia R., Vigil de la Villa R., Vegas I., Frias M., Sanchez de Rojas M. I., The pozzolanic properties of paper sludge waste, Construction and Building Materials, 22, 7, pp. 1484-1490, (2008)
  • [8] Cyr M., Idir R., Escadeillas G., Use of metakaolin to stabilize sewage sludge ash and municipal solid waste incineration fly ash in cement-based materials, Journal of Hazardous Materials, 243, pp. 193-203, (2012)
  • [9] Bui N. K., Satomi T., Takahashi H., Influence of industrial by-products and waste paper sludge ash on properties of recycled aggregate concrete, Journal of Cleaner Production, 214, pp. 403-418, (2019)
  • [10] Wiebusch B., Seyfried C. F., Utilization of sewage sludge ashes in the brick and tile industry, Water Science Technology, 36, pp. 251-258, (1997)
12345