Influence of Pulverized Lightweight Pumice Fine Aggregate on the Cement Mortar’s Dry Shrinkage
The use of lightweight aggregates in cement concrete manufacturing solves the issue of drying shrinkage over the concrete's life span; nevertheless, the use of artificial lightweight sand may increase this issue in the cement mortar. This research looks at how using lighter sand affects the no...
Saved in:
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
University of Baghdad
2025-05-01
|
| Series: | Journal of Engineering |
| Subjects: | |
| Online Access: | https://joe.uobaghdad.edu.iq/index.php/main/article/view/3535 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850205735038746624 |
|---|---|
| author | Ferhad Rahim Karim |
| author_facet | Ferhad Rahim Karim |
| author_sort | Ferhad Rahim Karim |
| collection | DOAJ |
| description |
The use of lightweight aggregates in cement concrete manufacturing solves the issue of drying shrinkage over the concrete's life span; nevertheless, the use of artificial lightweight sand may increase this issue in the cement mortar. This research looks at how using lighter sand affects the non-mechanical qualities of cement mortar, namely the dry shrinkage property. It was prepared lightweight sand by pulverising pumice stone, screening it through a 1.18 mm sieve, and combining it with regular natural sand in varied amounts. It was tested various replacement percentages for lightweight sand by weight, such as 10%, 12%, 14%, 16%, and 18%, while keeping a single control sample without any lightweight pulverized pumice sand. As the proportion of pulverized pumice lightweight fine aggregate increases, the dry shrinkage of cement mortars containing pulverised lightweight pumice fine aggregate enhanced up to 161%, which has a negative impact on the durability of the cement mortar despite improved compressive and split tensile strengths of cement mortar. Moreover, the value of the brittleness index of the cement mortar reduced due to improvement of the split tensile strength. However, the bulk dry density of the cement mortar reduces up to 13.2%, which supports the reduction of the dead load in the high-rise buildings.
|
| format | Article |
| id | doaj-art-4f84a6cbae3b4646b849717839d04337 |
| institution | OA Journals |
| issn | 1726-4073 2520-3339 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | University of Baghdad |
| record_format | Article |
| series | Journal of Engineering |
| spelling | doaj-art-4f84a6cbae3b4646b849717839d043372025-08-20T02:11:01ZengUniversity of BaghdadJournal of Engineering1726-40732520-33392025-05-0131510.31026/j.eng.2025.05.08Influence of Pulverized Lightweight Pumice Fine Aggregate on the Cement Mortar’s Dry ShrinkageFerhad Rahim Karim0Department of Civil Engineering, College of Engineering, University of Sulaimani The use of lightweight aggregates in cement concrete manufacturing solves the issue of drying shrinkage over the concrete's life span; nevertheless, the use of artificial lightweight sand may increase this issue in the cement mortar. This research looks at how using lighter sand affects the non-mechanical qualities of cement mortar, namely the dry shrinkage property. It was prepared lightweight sand by pulverising pumice stone, screening it through a 1.18 mm sieve, and combining it with regular natural sand in varied amounts. It was tested various replacement percentages for lightweight sand by weight, such as 10%, 12%, 14%, 16%, and 18%, while keeping a single control sample without any lightweight pulverized pumice sand. As the proportion of pulverized pumice lightweight fine aggregate increases, the dry shrinkage of cement mortars containing pulverised lightweight pumice fine aggregate enhanced up to 161%, which has a negative impact on the durability of the cement mortar despite improved compressive and split tensile strengths of cement mortar. Moreover, the value of the brittleness index of the cement mortar reduced due to improvement of the split tensile strength. However, the bulk dry density of the cement mortar reduces up to 13.2%, which supports the reduction of the dead load in the high-rise buildings. https://joe.uobaghdad.edu.iq/index.php/main/article/view/3535Cement mortarDrying shrinkagePulverized lightweight pumice sandPumice stone |
| spellingShingle | Ferhad Rahim Karim Influence of Pulverized Lightweight Pumice Fine Aggregate on the Cement Mortar’s Dry Shrinkage Journal of Engineering Cement mortar Drying shrinkage Pulverized lightweight pumice sand Pumice stone |
| title | Influence of Pulverized Lightweight Pumice Fine Aggregate on the Cement Mortar’s Dry Shrinkage |
| title_full | Influence of Pulverized Lightweight Pumice Fine Aggregate on the Cement Mortar’s Dry Shrinkage |
| title_fullStr | Influence of Pulverized Lightweight Pumice Fine Aggregate on the Cement Mortar’s Dry Shrinkage |
| title_full_unstemmed | Influence of Pulverized Lightweight Pumice Fine Aggregate on the Cement Mortar’s Dry Shrinkage |
| title_short | Influence of Pulverized Lightweight Pumice Fine Aggregate on the Cement Mortar’s Dry Shrinkage |
| title_sort | influence of pulverized lightweight pumice fine aggregate on the cement mortar s dry shrinkage |
| topic | Cement mortar Drying shrinkage Pulverized lightweight pumice sand Pumice stone |
| url | https://joe.uobaghdad.edu.iq/index.php/main/article/view/3535 |
| work_keys_str_mv | AT ferhadrahimkarim influenceofpulverizedlightweightpumicefineaggregateonthecementmortarsdryshrinkage |