Properties of high-volume fly ash concrete incorporating nano-SiO2
Properties of high-volume fly ash concrete incorporating nano-SiO2
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DOI：
10.1016/j.cemconres.2003.11.013
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发表时间：
2004-06-01
影响因子：
11.4
通讯作者：
Li, GY
中科院分区：
文献类型：
--
作者：
Li, GY
本文介绍了掺入纳米二氧化硅（SHFAC）的高掺量粉煤灰高强混凝土性能的实验室研究。结果与对照硅酸盐水泥混凝土（PCC）和高掺量粉煤灰高强混凝土（HFAC）的结果进行了比较。这些混凝土混合物的评估基于短期和长期性能。这些包括抗压强度和孔径分布。与高掺量粉煤灰高强度相比，早在固化 3 天后就观察到 SHFAC 的强度显着增加，并且还观察到 SHFAC 孔径分布的改善。在这项工作中，还研究了纳米 SiO2 粉煤灰水泥体系的水化热，并与粉煤灰-水泥体系和纯水泥体系进行了比较。此外，还研究了掺入纳米SiO2的粉煤灰、粉煤灰和单独的纳米SiO2在饱和石灰溶液中浸泡后的重量变化。 (C) 2004 Elsevier Ltd. 保留所有权利。
This paper presents a laboratory study on the properties of high-volume fly ash high-strength concrete incorporating nano-SiO2 (SHFAC). The results were compared with those of control Portland cement concrete (PCC) and of high-volume fly ash high-strength concrete (HFAC). Assessments of these concrete mixes were based on short- and long-term performance. These included compressive strength and pore size distribution. Significant strength increases of SHFAC compared to the high-volume fly ash high-strength were observed as early as after 3 days curing, and improvements in the pore size distribution of SHFAC were also observed. In this work, the hydration heat of nano-SiO2 fly ash cement systems was also studied in comparison to the fly ash-cement systems and to the pure cement systems. In addition, the weight change of fly ash incorporating nano-SiO2, fly ash, and nano-SiO2 alone after immersed in saturated lime solution was also studied. (C) 2004 Elsevier Ltd. All rights reserved.