EFFECT OF GRANULATED BLAST FURNACE SLAG ON THE DURABILITY OF SELF COMPACTING CONCRETE IN HOT ENVIRONMENT

Author(s): Kenai Said, Yahiaoui Walid, Menadi Belkacem
Paper category: Proceedings
Book title: proceedings of the International RILEM Conference on Materials, Systems and Structures in Civil Engineering Conference segment on Service Life of Cement-Based Materials and Structures
Editor(s): Miguel Azenha, Ivan Gabrijel, Dirk Schlicke, Terje Kanstad and Ole Mejlhede Jensen
ISBN:978-2-35158-171-4
e-ISBN: 978-2-35158-173-5
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 777-788
Total Pages: 12
Language : English

Abstract: Self-compacting concrete (SCC) is characterized by its high volume of paste and the presence
of mineral additions such as ground granulated blast furnace slag (GGBFS) and natural
pouzzolana. The performance of SCC in moderate climate is well investigated. However, few
studies are available on the effect of hot environment. This paper reports the results of an
experimental study conducted to evaluate the effect of GGBFS and initial water-curing period
on the performance of SCC. Cement was substituted by blast furnace slag by weight at two
different levels of substitution (15% and 25%). Concrete specimens were stored either in a
water at T=20 °C, or in the open air during summer period (T= 35 to 40 C° and R.H= 50 to
60%) after an initial humid curing period of 3, 7 or 28 days. Compressive strength at 28 and
90 days, water capillary and porosity were investigated. The increase in the substitution level
of slag from 15 to 25% resulted in a compressive strength at 28 days comparable to that of
cement without addition, irrespective of the period of curing. The experimental results show
the importance of humid curing in hot climates in particular when GGBFS is used.

Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00