Izvorni znanstveni članak
https://doi.org/10.30765/er.40.3.04
Evolution of durability and mechanical properties of ordinary portland cement concretes in sulphates attack
Zaidi Narimane
; Department of Mechanical engineering, Sciences and technologies Faculty, University of Abbas Laghrour, 40004 Khenchela
Hamma Zedira
; Department of Mechanical engineering, Sciences and technologies Faculty, University of Abbas Laghrour, 40004 Khenchela, Algeria
J.P. Castro-Gomez
; C-MADE, Centre of Materials and Building Technologies, Department of Civil Engineering and Architecture, University of Beira Interior, 6201-001 Covilhã, Portugal3URMPE, Materials, Processes and Environment
Boudjema Bezzazi
; URMPE, Materials, Processes and Environment Research Unit, University of M'Hamed Bougara, 35005 Boumerdes, Algeria
Aissa Talah
; LBE, Built Environment Research Laboratory, University of Science and Technology, 16111 Algiers, Algeria
Mohammed Amin Benbouras
; LBE, Built Environment Research Laboratory, University of Science and Technology, 16111 Algiers, Algeria
Sažetak
Concrete in sulphates environments often undergoes significant alterations that often have significant adverse results on its engineering properties. However, the choice of cement type is a very important factor for concrete exposed in aggressive environment. This research presents the effect of two types of cement on the mechanical and microstructure properties of ordinary concretes exposed in aggressive solution dosed with 5% of gypsum (Ca2SO4.2H2O). The tests studied in this experimental part were the compressive strength, flexural strength, thermogravimetry, mercury intrusion porosimetry and mass variations of the concrete. The results clearly show that the CEM I 42.5 is suitable for the formulation of concretes exposed to sulphate attack and their properties are better compared with the CEM II/A 42.5.
Ključne riječi
durability; mechanical properties; concrete; cement; sulphate attack
Hrčak ID:
238263
URI
Datum izdavanja:
21.5.2020.
Posjeta: 1.025 *