Effects of nanomaterials on hardening of cement-silica fume-fly ash-based ultra-high-strength concrete

被引：38

作者：

Wang, Dehui ^{[1
]}

Shi, Caijun ^{[1
]}

Wu, Zemei ^{[1
,2
]}

Wu, Linmei ^{[1
]}

Xiang, Shuncheng ^{[1
]}

Pan, Xiaoying ^{[1
]}

机构：

[1] Hunan Univ, Coll Civil Engn, Changsha, Hunan, Peoples R China

[2] Missouri Univ Sci & Technol, Dept Civil Architectural & Environm Engn, Rolla, MO USA

来源：

ADVANCES IN CEMENT RESEARCH | 2016年 / 28卷 / 09期

基金：

美国国家科学基金会;

关键词：

hydration; microstructure; SELF-CONSOLIDATING CONCRETE; NANO-PARTICLES; MECHANICAL-PROPERTIES; MICROSTRUCTURE; PERFORMANCE; NANO-SIO2; NANOSILICA; REDUCTION; MORTAR;

D O I：

10.1680/jadcr.15.00080

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this paper, the flowability, compressive strength, hydration heat, porosity and calcium hydroxide content of cement-silica fume-fly ash-based ultra-high-strength concrete (UHSC) incorporating either nano-silica (SiO2) or nano-calcium carbonate (CaCO3) were investigated. Test results showed that the flowability of UHSC was reduced by incorporating nano-silica and nano-calcium carbonate. After incorporating nano-silica, the hydration heat flow of UHSC increased, and the hydration heat of UHSC increased at first but decreased later. For UHSC with nano-calcium carbonate, the hydration heat flow increased and the hydration heat decreased. With the increase of both nano-silica and nano-calcium carbonate content, the compressive strength of UHSC increased at first and then decreased. The porosity decreased at first and increased later with the increase of nano-silica and nano-calcium carbonate content. As regards the calcium hydroxide content, this decreased with the increase of nano-silica content, but increased with the increase of nano-calcium carbonate content.

引用

页码：555 / 566

页数：12

共 50 条

[1] THE HARDENING PROCESS OF ULTRA-HIGH STRENGTH CONCRETE WITH CEMENT-SILICA FUME-SLAG-FLY ASH FOUR BINDERS
Wang, Dehui
Shi, Caijun
Wu, Linmei
Wu, Zemei
Chong, Linlin
1ST INTERNATIONAL CONFERENCE ON UHPC MATERIALS AND STRUCTURES, 2016, 105 : 492 - 499
[2] The hydration and microstructure of ultra high-strength concrete with cement-silica fume-slag binder
Shi, Caijun
Wang, Dehui
Wu, Linmei
Wu, Zemei
CEMENT & CONCRETE COMPOSITES, 2015, 61 : 44 - 52
[3] Silica Fume/Fly Ash Mixed Effects on Cement Mortar Strength
Xiao, Li-Guang
Jiang, Bo
International Conference on Mechanics, Building Material and Civil Engineering (MBMCE 2015), 2015, : 479 - 482
[4] Effect of silica fume on compressive strength of ultra-high-performance concrete made of calcium aluminate cement/fly ash based geopolymer
Wang, Fang
Sun, Xiaokun
Tao, Zhong
Pan, Zhu
JOURNAL OF BUILDING ENGINEERING, 2022, 62
[5] Utilization of fly ash with silica fume and properties of Portland cement-fly ash-silica fume concrete
Nochaiya, Thanongsak
Wongkeo, Watcharapong
Chaipanich, Arnon
FUEL, 2010, 89 (03) : 768 - 774
[6] Influence of Silica Fume Additive and Temperature History on the Volume Change of Ultra-High-Strength Cement Paste and Concrete
Teramoto, Atsushi
Maruyama, Ippei
Mitani, Yuji
ADVANCES IN CIVIL ENGINEERING MATERIALS, 2019, 8 (03): : 153 - 172
[7] Effects of high temperature and pressure on strength and elasticity of lignite fly ash and silica fume concrete
ACI Mater J, 1 (51-60):
[8] Effects of high temperature and pressure on strength and elasticity of lignite fly ash and silica fume concrete
Ghosh, S
Nasser, KW
ACI MATERIALS JOURNAL, 1996, 93 (01) : 51 - 60
[9] Influence of Silica Fume, Fly Ash, Super Pozz and High Slag Cement on Water Permeability and Strength of Concrete
Elsayed, A. A.
JORDAN JOURNAL OF CIVIL ENGINEERING, 2011, 5 (02) : 245 - 257
[10] Strength properties of concrete with fly ash and silica fume as cement replacing materials for pavement construction
Chore, Hemant Sharad
Joshi, Mrunal Prashant
ADVANCES IN CONCRETE CONSTRUCTION, 2021, 12 (05) : 419 - 427

← 1 2 3 4 5 →