Analysis of mechanical and microstructural properties of high performance concretes containing nanosilica and silica fume
نویسندگان
چکیده
The use of nanomaterials in concrete has shown promise, and the several types cementitious compounds been found to guarantee greater physical–mechanical properties improvements microstructure. mineral admixtures, such as silica fume, ensures improvement interfacial transition zone (ITZ) between aggregate paste high-performance (HPC). Thus, this work evaluates performance superplasticizer additive with colloidal nanosilica suspension slurried fume HPC its macro- micro-structural properties. mechanical (i.e., compressive strength elastic modulus) microstructural via (scanning electron microscopy X-ray micro tomography) concretes 1.5 3% 5 10% included evaluation methods study. results indicate that, modulus increased significantly. resulted a showed an over 75% at 28 days. Besides for same w/b = 0.35 by 36% compared reference concrete. investigations show that led densification microstructure, which is responsible performance.
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ژورنال
عنوان ژورنال: Materia-rio De Janeiro
سال: 2021
ISSN: ['1517-7076']
DOI: https://doi.org/10.1590/s1517-707620210004.1304