Assessing the Suitability of Snail-Shell Powder as a Partial Replacement of Cement in Concrete Production.
Concrete is a mixture of aggregates and binders and among the concrete ingredients, the binder which is usually cement is a costly and environmentally unfriendly element, especially during its manufacture, and has led to resource depletion. Concrete is considered the backbone of any construction wor...
Saved in:
| Main Author: | |
|---|---|
| Format: | Thesis |
| Language: | English |
| Published: |
Kabale University
2024
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.12493/2546 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1823844184132419584 |
|---|---|
| author | Mukundane, Ivan |
| author_facet | Mukundane, Ivan |
| author_sort | Mukundane, Ivan |
| collection | KAB-DR |
| description | Concrete is a mixture of aggregates and binders and among the concrete ingredients, the binder which is usually cement is a costly and environmentally unfriendly element, especially during its manufacture, and has led to resource depletion. Concrete is considered the backbone of any construction work both economically and mechanically. It is a composite material resulting from a mixture of cement, water, and aggregates (both fine and coarse). It makes any shape when cast in any formwork and forms a solid mass when cured at a suitable temperature and humidity
This research titled “Assessing the suitability of snail-shell powder as partial replacement of cement in concrete” aims at the utilization of snail shells as a partial replacement of ordinary Portland cement. Snail shells obtained from the lake shores of Albert in Uganda were washed and cleaned thoroughly with clean water. The shells were ground by a hammer mill into fine pieces in size. They were oven-dried under conditions of 150oc for 2 hours and sieved through the 0.075mm sieve to obtain the required powder. Their pozzolanic composition was done and found to contain elements such as Calcium-Oxide 85.413%m/m, Iron (iii) oxide 0.406%m/m, Silicon dioxide 8.561%m/m, Potassium oxide 0.212%m/m, Aluminum oxide as 4.250%m/m, Manganese(ii) oxide 0.308%m/m, Phosphorous pent oxide 0.002%m/m, Titanium oxide 0.015%m/m. Physical properties of snail shells, fine aggregates, and coarse aggregates were also done and found to be fineness modulus of sand 2.56, water absorption of sand 2.3%, specific gravity of sand 1.23, natural moisture content of sand 1.47%, water absorption and specific gravity of coarse aggregates as 0.5% and 2.68 respectively, bulk density of coarse aggregates of 1555.56kg/m3 specific gravity and water absorption of the snail-shell sample as 2.95 and 2.02% respectively and fineness of SSP as 92.8%. Blended pastes containing OPC and SSP at different percentage replacements, 0%, 5%, 7.5%, 10%, and 12.5% were investigated for workability, and compressive strength of grade 20 Concrete at different days ie 7. 14 and 28 days It was found that 10% replacement of SSP gave the maximum concrete and the desired strength of 19.1MPa at 28 days while an increase in the % replacement lowered the workability of concrete. |
| format | Thesis |
| id | oai:idr.kab.ac.ug:20.500.12493-2546 |
| institution | KAB-DR |
| language | English |
| publishDate | 2024 |
| publisher | Kabale University |
| record_format | dspace |
| spelling | oai:idr.kab.ac.ug:20.500.12493-25462024-12-29T00:01:11Z Assessing the Suitability of Snail-Shell Powder as a Partial Replacement of Cement in Concrete Production. Mukundane, Ivan Assessing Suitability Snail-Shell Powder Partial Replacement Cement Concrete Production Concrete is a mixture of aggregates and binders and among the concrete ingredients, the binder which is usually cement is a costly and environmentally unfriendly element, especially during its manufacture, and has led to resource depletion. Concrete is considered the backbone of any construction work both economically and mechanically. It is a composite material resulting from a mixture of cement, water, and aggregates (both fine and coarse). It makes any shape when cast in any formwork and forms a solid mass when cured at a suitable temperature and humidity This research titled “Assessing the suitability of snail-shell powder as partial replacement of cement in concrete” aims at the utilization of snail shells as a partial replacement of ordinary Portland cement. Snail shells obtained from the lake shores of Albert in Uganda were washed and cleaned thoroughly with clean water. The shells were ground by a hammer mill into fine pieces in size. They were oven-dried under conditions of 150oc for 2 hours and sieved through the 0.075mm sieve to obtain the required powder. Their pozzolanic composition was done and found to contain elements such as Calcium-Oxide 85.413%m/m, Iron (iii) oxide 0.406%m/m, Silicon dioxide 8.561%m/m, Potassium oxide 0.212%m/m, Aluminum oxide as 4.250%m/m, Manganese(ii) oxide 0.308%m/m, Phosphorous pent oxide 0.002%m/m, Titanium oxide 0.015%m/m. Physical properties of snail shells, fine aggregates, and coarse aggregates were also done and found to be fineness modulus of sand 2.56, water absorption of sand 2.3%, specific gravity of sand 1.23, natural moisture content of sand 1.47%, water absorption and specific gravity of coarse aggregates as 0.5% and 2.68 respectively, bulk density of coarse aggregates of 1555.56kg/m3 specific gravity and water absorption of the snail-shell sample as 2.95 and 2.02% respectively and fineness of SSP as 92.8%. Blended pastes containing OPC and SSP at different percentage replacements, 0%, 5%, 7.5%, 10%, and 12.5% were investigated for workability, and compressive strength of grade 20 Concrete at different days ie 7. 14 and 28 days It was found that 10% replacement of SSP gave the maximum concrete and the desired strength of 19.1MPa at 28 days while an increase in the % replacement lowered the workability of concrete. 2024-12-28T15:17:38Z 2024-12-28T15:17:38Z 2024 Thesis Mukundane, Ivan (2024). Assessing the Suitability of Snail-Shell Powder as a Partial Replacement of Cement in Concrete Production. Kabale: Kabale University. http://hdl.handle.net/20.500.12493/2546 en Attribution-NonCommercial-NoDerivs 3.0 United States http://creativecommons.org/licenses/by-nc-nd/3.0/us/ application/pdf Kabale University |
| spellingShingle | Assessing Suitability Snail-Shell Powder Partial Replacement Cement Concrete Production Mukundane, Ivan Assessing the Suitability of Snail-Shell Powder as a Partial Replacement of Cement in Concrete Production. |
| title | Assessing the Suitability of Snail-Shell Powder as a Partial Replacement of Cement in Concrete Production. |
| title_full | Assessing the Suitability of Snail-Shell Powder as a Partial Replacement of Cement in Concrete Production. |
| title_fullStr | Assessing the Suitability of Snail-Shell Powder as a Partial Replacement of Cement in Concrete Production. |
| title_full_unstemmed | Assessing the Suitability of Snail-Shell Powder as a Partial Replacement of Cement in Concrete Production. |
| title_short | Assessing the Suitability of Snail-Shell Powder as a Partial Replacement of Cement in Concrete Production. |
| title_sort | assessing the suitability of snail shell powder as a partial replacement of cement in concrete production |
| topic | Assessing Suitability Snail-Shell Powder Partial Replacement Cement Concrete Production |
| url | http://hdl.handle.net/20.500.12493/2546 |
| work_keys_str_mv | AT mukundaneivan assessingthesuitabilityofsnailshellpowderasapartialreplacementofcementinconcreteproduction |