The Investigation of Nano Silica in the Cement Hydration Pro

<p>With the advent of nano technology, materials have been developed that can be applied to high performance concrete mix designs. Nano silica reacts with calcium hydroxide (CH) to develop more of the strength carrying structure of cement: calcium silica hydrate (CSH). In this paper, relationships have been developed to distinguish the benefits when using different sizes of nano silica in cement paste. An extensive regime of experimental analysis was carried out to determine the effect of nano silica. Through these experiments the heat of hydration of multiple cement mix designs was measured. After that, the concentration of CH was recorded through X-ray diffraction. Then, the grain structures were examined through scanning electron microscopy. Finally, the compressive strength was determined for each cement paste mixture. Through these experiments it was found that as the silica particles decreased in size and their size distribution broadened, the CSHs became more rigid; this increased the compressive strength.</p>

Name thesis:degree_name

M.S.

Level thesis:degree_level

Masters Thesis

Year dc:date.available

2009

Author dc:creator

• Belkowitz, Jonathan Samuel

Contributors dc:contributor

• Davor Balzar, Ph.D.
• Daniel Armentrout
• Maceij Kumosa

• Calorimetry
• Cement hydration
• Compressive strength
• Nano silica
• Scanning electron microscopy
• X-ray diffraction
• Engineering Science and Materials
• Mechanics of Materials

Statement dc:rights

• <p>Copyright is held by the author. User is responsible for all copyright compliance.</p>

Language dc:language

en

Repository record dc:identifier

https://digitalcommons.du.edu/etd/761

OAI identifier oai:identifier

oai:digitalcommons.du.edu:etd-1760