Experimental study on the strength and durability-related properties of ordinary Portland and rapid hardening Portland cement mortar containing polyurethane binder
The durability of cement-based materials plays a significant role in controlling their life cycle. Bio-based polyurethane (Castor oil) was used to improve the durability and mechanical properties of two types of cement mortar, namely: Ordinary Portland cement (PCM-mortar) and rapid hardening Portlan...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509522006623 |
| _version_ | 1797997279202770944 |
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| author | M.S.M. Al-kahtani Han Zhu Yasser E. Ibrahim S.I. Haruna |
| author_facet | M.S.M. Al-kahtani Han Zhu Yasser E. Ibrahim S.I. Haruna |
| author_sort | M.S.M. Al-kahtani |
| collection | DOAJ |
| description | The durability of cement-based materials plays a significant role in controlling their life cycle. Bio-based polyurethane (Castor oil) was used to improve the durability and mechanical properties of two types of cement mortar, namely: Ordinary Portland cement (PCM-mortar) and rapid hardening Portland cement (RHPC-mortar). To investigate the effects of polyurethane (PU) binder; therefore, experimental tests, including flowability, rate of water absorption, early and dry restrained shrinkage properties, compressive strength, and flexural strength, were performed on the two mortar types. Moreover, the shrinkage properties were estimated using a restrained shrinkage eccentric ring device (RSERD) to improve cracks observation. The PU binder was added to the mortar mixture at 0 %, 15 %, and 25 % by cement weight. The result indicates that the optimum PU binder content (15 %) improves the flexural strength of PCM-mortar at 3 d, 7 d, and 28 d by 10.1 %, 0.93 %, and 10.62 %, respectively, and the flexural strength of RHPC-mortar at 3 d, 7 d, and 28 d was increased by 6.93 %, 1.78 %, and 1.74 %. However, a reduction in the compressive strength was observed. The workability of PU-cement mortar reduced with optimum PU binder content and increased with higher PU binder. The flow-ability percentage drop index revealed that PU-cement mortars containing 25 %PU from the PCM and RHPC- mortars showed lower FPI values of −3.57 % and −8.69 %, respectively. The RSERD mortar specimen controls the cracks propagation as expected crack occurred only on the eccentric side. None of the PU-cement mortar exhibited crack propagation for 182 d. The cracking time of PCM-PU0 and RHPC-PU0 are 104 h and 87.2 h, respectively. The water absorption capacity of PCM and RHPC-mortar was reduced by 67.97 % and 23.46 %, respectively. The PU could be regarded as a suitable candidate for improving cracking resistance and reducing the water absorption rate of cement-based composites. |
| first_indexed | 2024-04-11T10:30:29Z |
| format | Article |
| id | doaj.art-8f692477c3e445eabef4ed80f85144d9 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-04-11T10:30:29Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-8f692477c3e445eabef4ed80f85144d92022-12-22T04:29:27ZengElsevierCase Studies in Construction Materials2214-50952022-12-0117e01530Experimental study on the strength and durability-related properties of ordinary Portland and rapid hardening Portland cement mortar containing polyurethane binderM.S.M. Al-kahtani0Han Zhu1Yasser E. Ibrahim2S.I. Haruna3School of Civil Engineering, Tianjin University, Tianjin 300350, ChinaSchool of Civil Engineering, Tianjin University, Tianjin 300350, China; Key Laboratory of Coast Civil structure Safety of the Ministry of Education, Tianjin University, Tianjin 300350, China; Corresponding author at: School of Civil Engineering, Tianjin University, Tianjin 300350, China.Engineering Management Department, College of Engineering, Prince Sultan University, Riyadh 11586, Saudi ArabiaSchool of Civil Engineering, Tianjin University, Tianjin 300350, ChinaThe durability of cement-based materials plays a significant role in controlling their life cycle. Bio-based polyurethane (Castor oil) was used to improve the durability and mechanical properties of two types of cement mortar, namely: Ordinary Portland cement (PCM-mortar) and rapid hardening Portland cement (RHPC-mortar). To investigate the effects of polyurethane (PU) binder; therefore, experimental tests, including flowability, rate of water absorption, early and dry restrained shrinkage properties, compressive strength, and flexural strength, were performed on the two mortar types. Moreover, the shrinkage properties were estimated using a restrained shrinkage eccentric ring device (RSERD) to improve cracks observation. The PU binder was added to the mortar mixture at 0 %, 15 %, and 25 % by cement weight. The result indicates that the optimum PU binder content (15 %) improves the flexural strength of PCM-mortar at 3 d, 7 d, and 28 d by 10.1 %, 0.93 %, and 10.62 %, respectively, and the flexural strength of RHPC-mortar at 3 d, 7 d, and 28 d was increased by 6.93 %, 1.78 %, and 1.74 %. However, a reduction in the compressive strength was observed. The workability of PU-cement mortar reduced with optimum PU binder content and increased with higher PU binder. The flow-ability percentage drop index revealed that PU-cement mortars containing 25 %PU from the PCM and RHPC- mortars showed lower FPI values of −3.57 % and −8.69 %, respectively. The RSERD mortar specimen controls the cracks propagation as expected crack occurred only on the eccentric side. None of the PU-cement mortar exhibited crack propagation for 182 d. The cracking time of PCM-PU0 and RHPC-PU0 are 104 h and 87.2 h, respectively. The water absorption capacity of PCM and RHPC-mortar was reduced by 67.97 % and 23.46 %, respectively. The PU could be regarded as a suitable candidate for improving cracking resistance and reducing the water absorption rate of cement-based composites.http://www.sciencedirect.com/science/article/pii/S2214509522006623PolyurethaneRestrained shrinkage strainMechanical propertiesCement mortarWater absorption |
| spellingShingle | M.S.M. Al-kahtani Han Zhu Yasser E. Ibrahim S.I. Haruna Experimental study on the strength and durability-related properties of ordinary Portland and rapid hardening Portland cement mortar containing polyurethane binder Case Studies in Construction Materials Polyurethane Restrained shrinkage strain Mechanical properties Cement mortar Water absorption |
| title | Experimental study on the strength and durability-related properties of ordinary Portland and rapid hardening Portland cement mortar containing polyurethane binder |
| title_full | Experimental study on the strength and durability-related properties of ordinary Portland and rapid hardening Portland cement mortar containing polyurethane binder |
| title_fullStr | Experimental study on the strength and durability-related properties of ordinary Portland and rapid hardening Portland cement mortar containing polyurethane binder |
| title_full_unstemmed | Experimental study on the strength and durability-related properties of ordinary Portland and rapid hardening Portland cement mortar containing polyurethane binder |
| title_short | Experimental study on the strength and durability-related properties of ordinary Portland and rapid hardening Portland cement mortar containing polyurethane binder |
| title_sort | experimental study on the strength and durability related properties of ordinary portland and rapid hardening portland cement mortar containing polyurethane binder |
| topic | Polyurethane Restrained shrinkage strain Mechanical properties Cement mortar Water absorption |
| url | http://www.sciencedirect.com/science/article/pii/S2214509522006623 |
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