- 目录
- 建筑石膏与胶凝材料
- 首页
养护温度对赤泥-矿渣碱激发胶凝材料强度和水化
作者：张鹏1，3，张文生2，韦江雄1，叶家元2，祝雯3，雷翅3
（1.华南理工大学 材料科学与工程学院，广东 广州 510640；2.中国建筑材料科学研究总院 绿色建筑材料国家重点实验室，北京 100024；3.广州市建筑科学研究院有限公司，广东 广州 510440）
摘要：以赤泥、矿渣为主要原料，通过掺入激发剂制备得到赤泥-矿渣胶凝材料，研究了不同养护温度对该胶凝材料强度的影响，并通过XRD、FTIR、SEM分析了养护温度对其水化产物组成及微观结构的影响。结果表明：在20～60 ℃内，提高养护温度，赤泥-矿渣胶凝材料的早期强度大幅度提高，经40 ℃和60 ℃养护的试样3 d抗压强度较20 ℃养护的分别提高54.9%和100.2%；养护温度对反应产物种类没有影响，仍为非晶态凝胶。
关键词：赤泥；矿渣；碱激发胶凝材料；养护温度；产物；微观结构
中图分类号：TU528 文献标识码：A 文章编号：1001-702X（2017）10-0001-03
关键词：赤泥；矿渣；碱激发胶凝材料；养护温度；产物；微观结构
中图分类号：TU528 文献标识码：A 文章编号：1001-702X（2017）10-0001-03
Influence of curing conditions on the strength，hydration properties of geopolymer synthesized
from red mud and slag
ZHANG Peng1，3，ZHANG Wensheng2，WEI Jiangxiong1，YE Jiayuan2，ZHU Wen3，LEI Chi3
（1.School of Materials Science and Engineering，South China University of Technology，Guangzhou 510640，China；
2.State Key Laboratory of Green Building Materials，China Building Materials Academy，Beijing 100024，China；
3.Guang Zhou Institute of Building Science Co. Ltd.，Guangzhou 510440，China）
from red mud and slag
ZHANG Peng1，3，ZHANG Wensheng2，WEI Jiangxiong1，YE Jiayuan2，ZHU Wen3，LEI Chi3
（1.School of Materials Science and Engineering，South China University of Technology，Guangzhou 510640，China；
2.State Key Laboratory of Green Building Materials，China Building Materials Academy，Beijing 100024，China；
3.Guang Zhou Institute of Building Science Co. Ltd.，Guangzhou 510440，China）
Abstract：An alkali-activated cementing material was successfully available from red mud and slag. The influences of curing conditions on mechanical performance and hydration products of prepared geopolymer were investigated. The composition of hydration products and micro-structure of hardened geopolymer were studied by using XRD，FTIR and SEM respectively. The results indicated that in 20～60 ℃，the elevated curing temperature accelerated the red mud-slag materials process，a more dense hydrated matrix with decreased the particle size of unreacted raw materials，and more interwoven and dense three-dimensional network structure products were observed. A significant increase in early strength was obtained as a result: The 3 d compressive strength of test samples which cured in conditions of 40 ℃ and 60 ℃was 54.9% and 100.2% higher than that of control ones respectively. However，the elevated curing temperature did not change the types of products that continued to be X-ray amorphous gels.
Key words：red mud，slag，alkali-activated cementing material，curing temperature，hydration products，micro-structure
Key words：red mud，slag，alkali-activated cementing material，curing temperature，hydration products，micro-structure