Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
The effect of nano-silica on the performance of Portland cement mortar
Nanotechnology has nowadays a pronounced impact on several areas of science and industry. Among several advantages, nanomaterials have been reported to introduce improvements in terms of system reliability, extend functionality beyond traditional applications and decrease energy consumption in struc...
Saved in:
| Main Author: | |
|---|---|
| Format: | Thesis |
| Published: |
AUC Knowledge Fountain
2013
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613416548466688 |
|---|---|
| access_status_str | Open Access |
| author | Ammar, Mohamed Mostafa |
| author_browse | Ammar, Mohamed Mostafa |
| author_facet | Ammar, Mohamed Mostafa |
| author_sort | Ammar, Mohamed Mostafa |
| collection | Thesis |
| dc_rights_str_mv | The author retains all rights with regard to copyright. The author certifies that written permission from the owner(s) of third-party copyrighted matter included in the thesis, dissertation, paper, or record of study has been obtained. The author further certifies that IRB approval has been obtained for this thesis, or that IRB approval is not necessary for this thesis. Insofar as this thesis, dissertation, paper, or record of study is an educational record as defined in the Family Educational Rights and Privacy Act (FERPA) (20 USC 1232g), the author has granted consent to disclosure of it to anyone who requests a copy. |
| description | Nanotechnology has nowadays a pronounced impact on several areas of science and industry. Among several advantages, nanomaterials have been reported to introduce improvements in terms of system reliability, extend functionality beyond traditional applications and decrease energy consumption in structures. Nanomaterials can enable better utilization of natural resources and reaching required materials properties with minimal usage. Nano-cement and nano-silica are among the recently used materials in this regard. The objective of this study is to explore the effect of incorporating nano-silica to cement mortar on enhancing mechanical properties and durability. Three types of nano silica with three nominal particle sizes have been used with two percentages (4% and 8% per weight of cement) and a w/c of 0.4. Testing program included compressive strength, tensile strength, rapid chloride permeability, microstructure analysis, chemical durability and the effect of mixing techniques on strength. The results were compared against both ordinary Portland cement mortar a well as conjugate mortar with 8% of cement silica fume. Results reveal adding nano-silica to cement mortar enhances its physical and mechanical properties such as compressive strength, tensile strength, permeability and chemical durability. The SEM pictures demonstrate that nano-silica contributes to enhancement of mortar through yielding denser, more compact and uniform mixtures. It was also found that nano-silica is superior to silica fume in enhancing the properties of cement mortar although a generalization at that stage needs further examination. The findings of this study should be validated by wider studies and testing scheme. It is recommended that codes of practice should be introduced for testing construction materials with nano-particles. |
| format | Thesis |
| id | oai:fount.aucegypt.edu:etds-2230 |
| institution | American University in Cairo (Egypt) |
| last_indexed | 2026-06-10T12:35:47.730Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from AUC Knowledge Fountain — bepress |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | AUC Knowledge Fountain |
| publisherStr | AUC Knowledge Fountain |
| record_format | dspace |
| source_str | AUC Knowledge Fountain — bepress |
| spelling | oai:fount.aucegypt.edu:etds-2230 The effect of nano-silica on the performance of Portland cement mortar Ammar, Mohamed Mostafa Nanotechnology has nowadays a pronounced impact on several areas of science and industry. Among several advantages, nanomaterials have been reported to introduce improvements in terms of system reliability, extend functionality beyond traditional applications and decrease energy consumption in structures. Nanomaterials can enable better utilization of natural resources and reaching required materials properties with minimal usage. Nano-cement and nano-silica are among the recently used materials in this regard. The objective of this study is to explore the effect of incorporating nano-silica to cement mortar on enhancing mechanical properties and durability. Three types of nano silica with three nominal particle sizes have been used with two percentages (4% and 8% per weight of cement) and a w/c of 0.4. Testing program included compressive strength, tensile strength, rapid chloride permeability, microstructure analysis, chemical durability and the effect of mixing techniques on strength. The results were compared against both ordinary Portland cement mortar a well as conjugate mortar with 8% of cement silica fume. Results reveal adding nano-silica to cement mortar enhances its physical and mechanical properties such as compressive strength, tensile strength, permeability and chemical durability. The SEM pictures demonstrate that nano-silica contributes to enhancement of mortar through yielding denser, more compact and uniform mixtures. It was also found that nano-silica is superior to silica fume in enhancing the properties of cement mortar although a generalization at that stage needs further examination. The findings of this study should be validated by wider studies and testing scheme. It is recommended that codes of practice should be introduced for testing construction materials with nano-particles. 2013-06-01T07:00:00Z thesis application/pdf https://fount.aucegypt.edu/etds/1231 https://fount.aucegypt.edu/context/etds/article/2230/viewcontent/Mohamed.pdf The author retains all rights with regard to copyright. The author certifies that written permission from the owner(s) of third-party copyrighted matter included in the thesis, dissertation, paper, or record of study has been obtained. The author further certifies that IRB approval has been obtained for this thesis, or that IRB approval is not necessary for this thesis. Insofar as this thesis, dissertation, paper, or record of study is an educational record as defined in the Family Educational Rights and Privacy Act (FERPA) (20 USC 1232g), the author has granted consent to disclosure of it to anyone who requests a copy. Theses and Dissertations AUC Knowledge Fountain Grout (Mortar) Sealing (Technology) |
| spellingShingle | Grout (Mortar) Sealing (Technology) Ammar, Mohamed Mostafa The effect of nano-silica on the performance of Portland cement mortar |
| title | The effect of nano-silica on the performance of Portland cement mortar |
| title_full | The effect of nano-silica on the performance of Portland cement mortar |
| title_fullStr | The effect of nano-silica on the performance of Portland cement mortar |
| title_full_unstemmed | The effect of nano-silica on the performance of Portland cement mortar |
| title_short | The effect of nano-silica on the performance of Portland cement mortar |
| title_sort | effect of nano silica on the performance of portland cement mortar |
| topic | Grout (Mortar) Sealing (Technology) |
| url | https://fount.aucegypt.edu/etds/1231 https://fount.aucegypt.edu/context/etds/article/2230/viewcontent/Mohamed.pdf |
| work_keys_str_mv | AT ammarmohamedmostafa theeffectofnanosilicaontheperformanceofportlandcementmortar AT ammarmohamedmostafa effectofnanosilicaontheperformanceofportlandcementmortar |