Microstructure tests, flow, and mechanical behavior of polymerized cement mortar
The influence of two types of polymeric admixture on the stress–strain (σ-ε) behavior of cement mortar is discussed in this article. The characteristics of cement mortars modified with two types of polymeric admixtures containing 0.20 percent (% wt.) were investigated. For early age (1 day) and 28-d...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-04-01
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| Series: | Ain Shams Engineering Journal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2090447922002337 |
| _version_ | 1827959446432645120 |
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| author | Ahmed Salih Mohammed Wael Mahmood Warzer Sarwar Qadir Kawan Ghafor Rawaz Kurda |
| author_facet | Ahmed Salih Mohammed Wael Mahmood Warzer Sarwar Qadir Kawan Ghafor Rawaz Kurda |
| author_sort | Ahmed Salih Mohammed |
| collection | DOAJ |
| description | The influence of two types of polymeric admixture on the stress–strain (σ-ε) behavior of cement mortar is discussed in this article. The characteristics of cement mortars modified with two types of polymeric admixtures containing 0.20 percent (% wt.) were investigated. For early age (1 day) and 28-day curing periods, the σ-ε behavior of modified cement mortar with polymeric admixtures was investigated. Depending on the polymeric structure and content, adding polymeric admixture reduced the water/cement ratio (w/c) by 14.5 to 25.5 %. When 0.20 % of polymeric admixture was added to cement mortar, the compression strength improved by 72 % to 153 %. The cement mortar samples became brittle as the polymeric admixtures content increased. The amorphous gel fills the spaces between cement particles and sand particles, decreasing voids and porosity and improving the density of the cement mortar. To forecast the connection of the modified cement mortar with polymer, the nonlinear Vipulanandan p-q equation was used, and it was compared to the Farazdaghi- Harris-YD and Sinusoidal models. The compressive stress–strain models were evaluated using statistical methods, and nonlinear approaches were utilized to predict compressive strength as a function of water/cement ratio, curing age, and polymer quantity. The less complicated model, the Vipulanandan p-q model, already has a smaller sum of squares than the other two models. Therefore, the Vipulanandan p-q model is the best one. |
| first_indexed | 2024-04-09T15:52:18Z |
| format | Article |
| id | doaj.art-b9b7e43b780b4994a011e24a6068cb26 |
| institution | Directory Open Access Journal |
| issn | 2090-4479 |
| language | English |
| last_indexed | 2024-04-09T15:52:18Z |
| publishDate | 2023-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ain Shams Engineering Journal |
| spelling | doaj.art-b9b7e43b780b4994a011e24a6068cb262023-04-26T05:57:27ZengElsevierAin Shams Engineering Journal2090-44792023-04-01144101922Microstructure tests, flow, and mechanical behavior of polymerized cement mortarAhmed Salih Mohammed0Wael Mahmood1Warzer Sarwar Qadir2Kawan Ghafor3Rawaz Kurda4Civil Engineering Department, College of Engineering, University of Sulaimani, Kurdistan, Iraq; Corresponding authors.Department of Civil Engineering, Komar University of Science and Technology, Kurdistan-Region, IraqCivil Engineering Department, College of Engineering, University of Sulaimani, Kurdistan, IraqCivil Engineering Department, College of Engineering, University of Sulaimani, Kurdistan, IraqDepartment of Highway and Bridge Engineering, Technical Engineering College, Erbil Polytechnic University, Erbil 44001, Iraq; Department of Civil Engineering, College of Engineering, Nawroz University, Duhok 42001, Iraq; CERIS, Civil Engineering, Architecture and Georresources Department, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal; Corresponding authors.The influence of two types of polymeric admixture on the stress–strain (σ-ε) behavior of cement mortar is discussed in this article. The characteristics of cement mortars modified with two types of polymeric admixtures containing 0.20 percent (% wt.) were investigated. For early age (1 day) and 28-day curing periods, the σ-ε behavior of modified cement mortar with polymeric admixtures was investigated. Depending on the polymeric structure and content, adding polymeric admixture reduced the water/cement ratio (w/c) by 14.5 to 25.5 %. When 0.20 % of polymeric admixture was added to cement mortar, the compression strength improved by 72 % to 153 %. The cement mortar samples became brittle as the polymeric admixtures content increased. The amorphous gel fills the spaces between cement particles and sand particles, decreasing voids and porosity and improving the density of the cement mortar. To forecast the connection of the modified cement mortar with polymer, the nonlinear Vipulanandan p-q equation was used, and it was compared to the Farazdaghi- Harris-YD and Sinusoidal models. The compressive stress–strain models were evaluated using statistical methods, and nonlinear approaches were utilized to predict compressive strength as a function of water/cement ratio, curing age, and polymer quantity. The less complicated model, the Vipulanandan p-q model, already has a smaller sum of squares than the other two models. Therefore, the Vipulanandan p-q model is the best one.http://www.sciencedirect.com/science/article/pii/S2090447922002337Cement mortarMicrostructure testPolymer contentsStress–strain behaviorModels |
| spellingShingle | Ahmed Salih Mohammed Wael Mahmood Warzer Sarwar Qadir Kawan Ghafor Rawaz Kurda Microstructure tests, flow, and mechanical behavior of polymerized cement mortar Ain Shams Engineering Journal Cement mortar Microstructure test Polymer contents Stress–strain behavior Models |
| title | Microstructure tests, flow, and mechanical behavior of polymerized cement mortar |
| title_full | Microstructure tests, flow, and mechanical behavior of polymerized cement mortar |
| title_fullStr | Microstructure tests, flow, and mechanical behavior of polymerized cement mortar |
| title_full_unstemmed | Microstructure tests, flow, and mechanical behavior of polymerized cement mortar |
| title_short | Microstructure tests, flow, and mechanical behavior of polymerized cement mortar |
| title_sort | microstructure tests flow and mechanical behavior of polymerized cement mortar |
| topic | Cement mortar Microstructure test Polymer contents Stress–strain behavior Models |
| url | http://www.sciencedirect.com/science/article/pii/S2090447922002337 |
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