期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 228, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2019.117040
关键词
Geopolymer-supported zeolite; Pore structure; Porous geopolymer; Thermal conductivity; Compressive strength
资金
- Southwest University of Science and Technology
- Science and Technology Project of Sichuan Province [2018GZ0152, 18YYJC0904, 2019ZDZX0024]
- National Key Research and Development Plan of China [2016YFC0701004]
Porous geopolymer-supported zeolites (PGZs) were successfully prepared by crystallizing bentonite-amended porous geopolymers, to study their synthesis, pore-forming mechanism, pore structure, and hardened properties. The results revealed that geopolymer gel and montmorillonite layers in porous geopolymers could subdivide and refine capillary voids, thereby forming submicron pores. Further, hydrothermal curing resulted in the formation of a zeolite-based matrix. The pores and the zeolite-based matrix caused a considerable reduction in the thermal conductivity of the PGZ. The PGZ pore volume rose steadily from 0.47 cc/g to 0.80 ccig with increasing bentonite slurry from 40% to 60%. The contents of the bentonite slurry were added to the geopolymer paste and then crystalized for 24 h at 90 degrees C, yielding PGZs with a thermal conductivity, compressive strength, and dry density of 0.121-0.167 W/m K, 2.3-8.7 MPa, and 774-930 kg/m(3), respectively. (C) 2019 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据