Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The mechanical properties of cement mortar reinforced with silica fume subjected to sulfate and chloride environment
This study investigates the effect of incorporating micro-sized silica fume on the mechanical properties and durability of cement mortar when exposed to sulfate and chloride environments. Mortar samples were prepared by replacing cement with micro-sized silica fume in varying proportions of 5%, 10%, 15%, 20%, 25%, 30%, and 35% by weight. The specimens were cured in water and chemically aggressive conditions, including 5% and 10% sodium sulfate solutions, as well as mixtures of 5% and 10% sodium chloride solutions, to simulate real-world exposure to such environments. Experimental results revealed that the addition of silica fume significantly enhanced the mortar's resistance to chemical deterioration caused by sulfates and chlorides. This improvement is attributed to the pozzolanic reaction of silica fume, which contributed to denser microstructures, reduced porosity, and a stronger bond within the matrix. Among the tested proportions, the optimal replacement ratios for achieving the best balance between mechanical strength and durability were identified up to 20%. These findings highlight the efficiency of silica fume as a supplementary cementitious material in mitigating the adverse effects of aggressive chemical agents. Such modifications can be particularly valuable in improving the service life of concrete structures exposed to harsh environmental conditions, enhancing sustainability and cost-effectiveness in construction practices.
The mechanical properties of cement mortar reinforced with silica fume subjected to sulfate and chloride environment
This study investigates the effect of incorporating micro-sized silica fume on the mechanical properties and durability of cement mortar when exposed to sulfate and chloride environments. Mortar samples were prepared by replacing cement with micro-sized silica fume in varying proportions of 5%, 10%, 15%, 20%, 25%, 30%, and 35% by weight. The specimens were cured in water and chemically aggressive conditions, including 5% and 10% sodium sulfate solutions, as well as mixtures of 5% and 10% sodium chloride solutions, to simulate real-world exposure to such environments. Experimental results revealed that the addition of silica fume significantly enhanced the mortar's resistance to chemical deterioration caused by sulfates and chlorides. This improvement is attributed to the pozzolanic reaction of silica fume, which contributed to denser microstructures, reduced porosity, and a stronger bond within the matrix. Among the tested proportions, the optimal replacement ratios for achieving the best balance between mechanical strength and durability were identified up to 20%. These findings highlight the efficiency of silica fume as a supplementary cementitious material in mitigating the adverse effects of aggressive chemical agents. Such modifications can be particularly valuable in improving the service life of concrete structures exposed to harsh environmental conditions, enhancing sustainability and cost-effectiveness in construction practices.
The mechanical properties of cement mortar reinforced with silica fume subjected to sulfate and chloride environment
Al-Safi, Sulaiman (Autor:in) / Altharehi, Abdulghani (Autor:in) / Alameri, Ibrahim A. (Autor:in) / Al-Jolahy, Abdulmalek (Autor:in)
04.03.2025
doi:10.20528/cjsmec.2025.01.005
Challenge Journal of Structural Mechanics; Vol 11, No 1 (2025); 55-69 ; 2149-8024
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Microstructural investigation of a silica fume-cement-lime mortar
| Online Contents | 2003
Durability Study of Silica Fume-mortar exposed to the Combined Sulfate and Chloride-rich Solution
| Springer Verlag | 2018
Durability Study of Silica Fume-mortar exposed to the Combined Sulfate and Chloride-rich Solution
| Online Contents | 2019
| Trans Tech Publications | 2014
Properties of Silica Fume Concrete and Mortar
| British Library Online Contents | 1993