New Approaches in Civil Engineering

New Approaches in Civil Engineering

The Effect of Micro Oxide of Aluminum and Micro Silica on the Physical and Chemical Characteristics of very High Strength Concrete

Document Type : Research Paper

Authors
Seyed Rahim Baharavar 1
Maryam Esmayili 2
1 Assistant Professor of Civil Engineering. Shams University. Gonbad Kavous, Iran
2 Master of Civil Engineering Department, Shams Gonbad Higher Education Institute, Gonbadkavos, Iran
10.30469/jnace.2024.432847.1101
Abstract
In this research, we investigated the effect of aluminum oxide with special micro-silica in order to measure its resistance in replacing it with cement and observe its effect on ultra-resistant concrete. The concrete samples presented in this research were with 400 kilograms of cement per cubic meter, and the rest of the fillers were aggregates and a percentage of micro-silica. Aluminum powder has been replaced with cement in percentages of 2, 4, 6, and 8 and compared with control concrete according to the following tests and their results are given in this research. Concrete samples in which aluminum oxide has been used have a negative trend in most of the tests after adding more than two percent, and the resistance also has a downward trend, but with the increase of microsilica, the trends are positive, and in the combination of these two materials, the graphs are up to 4%. Aluminum oxide is accepted and has an optimal trend, but after that it has been a downward trend, and the samples containing aluminum oxide with the increase of this additive at a lower temperature had a better performance up to 4%, and in the samples above 5%, resistance loss is observed..
Keywords
Aluminum oxide
Microsilica
High resistance concretes
Carbonation

Subjects

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New Approaches in Civil Engineering
Volume 8, Issue 1
Spring 2024
Pages 32-46