E3S Web Conf.
Volume 237, 20213rd International Symposium on Architecture Research Frontiers and Ecological Environment (ARFEE 2020)
|Number of page(s)||4|
|Section||Architecture Science and Civil Engineering|
|Published online||09 February 2021|
Study on the influence of fly ash and silica fume with different dosage on concrete strength
Zhejiang University of Water Resources and Electric Power, 310018 Hangzhou, Zhejiang, China
2 Zhejiang Huanlong Environmental Technology Co., Ltd, 324400 Quzhou, Zhejiang, China
* LIU Xue-ying: email@example.com
In order to improve the compressive strength of concrete, mineral admixtures can be added to concrete to replace part of the cement(C). Commonly used mineral admixtures include fly ash(FA) and silica fume(SF). Through a series of experiments, the effect of adding different amounts of fly ash and silica fume and double mixing on the strength of concrete was studied by using the same amount of substitute for cement under the same water-binder ratio. The results show that fly ash has a certain influence on improving the fluidity of concrete, and the influence on the strength of concrete is mainly in the later period; the influence of silica fume on the fluidity and strength of concrete is better than that of fly ash, and the main influence of silica fume is on the increase in strength. The early stage and the later stage are slower; the strength of concrete mixed with fly ash and silica fume at the same time increases first and then decreases with the increase of mineral admixtures.
© The Authors, published by EDP Sciences, 2021
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