IMPROVING THE ROBUSTNESS OF FRESH SELF-COMPACTING CONCRETE USING SMALL QUANTITIES OF FINE ADDITIONS
Although the use of self-compacting concrete has many advantages compared to vibrated concrete, its application in Europe is mainly limited to the precast industry.The onsite use of self-compacting concrete is hampered by a higher material cost, higher formwork pressures, and a reputation for unpredictability: self-compacting concrete has a higher sensitivity to small deviations in the properties and proportions of its ingredients.This paper describes the experimental results of an attempt to improve the robustness of fresh self-compacting concrete equivalent mortars by adding small amounts of purified clays, welan gum, diutan gum, fly ash, silica fume, ground granulated blast furnace slag, and a natural clinoptilolite type zeolite.Small additions of diutan gum, welan gum, and ground granulated blast furnace slag caused an increase of the robustness of fresh self-compacting concrete, and all small additions of the other materials induced a decrease of the robustness.
Self-compacting concrete Robustness Stability Additions Admixtures
Farid Van Der Vurst Geert De Schutter
Ghent University, Magnel Laboratory for Concrete Research, Ghent, Belgium
国际会议
厦门
英文
195-204
2014-06-05（万方平台首次上网日期，不代表论文的发表时间）