Effect of simultaneous addition of Nano-silica, fly ash, and silica fume on the compressive strength of concrete
Other Title(s)
تأثير الإضافة المتزامنة لسيليكا النانو و الرماد المتطاير و دخان السيليكا على قوة الضغط للخرسانة
Dissertant
Thesis advisor
University
Isra University
Faculty
Faculty of Engineering
Department
Engineering Project Management
University Country
Jordan
Degree
Master
Degree Date
2022
English Abstract
Applying nano technology has driven the enhancement of many materials, one of which is nano-silica (nS).
Therefore, the effect of nano-silica was investigated in this research.
13 mixes were cast and cured for three different ages 3, 7, and 28 days.
A compressive strength test was applied on 117 specimens and a slump test was recorded 13 times.
The results indicated that the compressive strength increases as nano-silica content increases and the nano-silica serves as an activator to promote the process of hydration.
However, the compressive strength was slowly developed when fly ash existed in the mix.
The highest and lowest compressive strength values obtained for the concrete mixes were In mix 8 and mix1, respectively at all 3 different ages.
Mix 8 contained 1% nano-silica and 5% silica fume, while mix 1 contained 0.25% nano-silica and 2% fly ash.
Silica fume properties can react fast with water molecules, and This leads to a positive effect on compressive strength and other mechanical properties.
The lowest slump value (46 mm) was for the highest percentage of nano-silica, fly ash, and silica fume for slump test results.
Despite the presence of relatively large quantities of fine materials in all mixtures, this effect was not apparent in the early age of the specimens (3 days).
It was most evident at the age of 7 and 28 days.
Silica fume specimens had low variation at 7 days with 1% nano-silica.
This is attributed to the highest percentage of nanosilica that can fill voids and react faster than silica fume particles then interrupting it.
This experimental work recommends to use nano-silica with silica fume rather than fly ash.
These two materials can provide the best compressive strength in a short time.
Main Subjects
No. of Pages
53
Table of Contents
Table of contents.
Abstract.
Abstract in Arabic.
Chapter One : Introduction.
Chapter Two : Literature review.
Chapter Three : Experimental work and materials.
Chapter Four : Results and discussion.
Chapter Five : Conclusions, limitations, and recommendations.
References.
American Psychological Association (APA)
Wahib, Umar Salim. (2022). Effect of simultaneous addition of Nano-silica, fly ash, and silica fume on the compressive strength of concrete. (Master's theses Theses and Dissertations Master). Isra University, Jordan
https://search.emarefa.net/detail/BIM-1429124
Modern Language Association (MLA)
Wahib, Umar Salim. Effect of simultaneous addition of Nano-silica, fly ash, and silica fume on the compressive strength of concrete. (Master's theses Theses and Dissertations Master). Isra University. (2022).
https://search.emarefa.net/detail/BIM-1429124
American Medical Association (AMA)
Wahib, Umar Salim. (2022). Effect of simultaneous addition of Nano-silica, fly ash, and silica fume on the compressive strength of concrete. (Master's theses Theses and Dissertations Master). Isra University, Jordan
https://search.emarefa.net/detail/BIM-1429124
Language
English
Data Type
Arab Theses
Record ID
BIM-1429124
