In situ monitoring of slab's structure degradation casting under hot climate

Author(s): Ahmed Bouaziz, Oussama Temami, Mekki Mellas
Paper category: Proceedings
Book title: Proceedings of the 2nd International RILEM/COST Conference on Early Age Cracking and Serviceability in Cement-based Materials and Structures Volume 2
Editor(s): Stéphanie Staquet and Dimitrios Aggelis
ISBN:978-2-35158-200-8
e-ISBN:978-2-35158-198-8
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 729-734
Total Pages: 6
Language : English

Abstract: We propose in this study to study concrete properties if it’s subjected at early age, to severe environmental parameters as hot climate. The experimental procedure is based on two complementary axes: in-situ monitoring of slab structures casting in hot climate in spring season. In order to simulate casting in summer season a series of simulated slab was curing in laboratory at 50°C with low humidity. The obtained results show clearly degradation in the quality of the concrete, identified even in the short time after its preparation. Early cracks , and pore can be observed visually jointly at fresh and solid state. Therefore, the mechanical strength in compression can decrease by up to 37.5 %. However, the compression strength decreased sequentially by 16% and 25% only if we added 1.5 % of the superplastifiant to the mixing water or by spraying Medacure at the surface of slab. This is will be minimized the number and the development of the cracks and pores.

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