IMPROVING THE ROBUSTNESS OF FRESH SELF-COMPACTING CONCRETE USING SMALL QUANTITIES OF FINE ADDITIONS

Author(s): Farid Van Der Vurst and Geert De Schutter
Paper category: Proceeding
Book title: Design, Performance and Use of Self-Consolidating Concrete
Editor(s): Caijun Shi, Zhihua Ou and Kamal Henri Khayat
Print-ISBN: 978-2-35158-143-8
e-ISBN: 978-2-35158-144-5
Publisher: RILEM Publications SARL
Publication year: 2014
Pages: 195 - 204
Total Pages : 10
Language : English

Abstract: 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.

Online publication: 2017
Publication type: full_text
Public price (Euros): 0.00