Performance evaluation of bond strength and fiber type on the mechanical properties of polyurethane-based polymer mortar
Polyurethane (PU)-based Mortar (PUM) has a short curing time and high bonding ability as a new potential repair material. However, its low strength significantly limits its application in maintaining civil engineering structures. In this paper, the effect of micro steel fiber (MSF) with different as...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-07-01
|
| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509523002942 |
| _version_ | 1797798853254053888 |
|---|---|
| author | Kexiao Wu Han Zhu Yasser E. Ibrahim Wenlixia Jiang S.I. Haruna Jianwen Shao Musa Adamu |
| author_facet | Kexiao Wu Han Zhu Yasser E. Ibrahim Wenlixia Jiang S.I. Haruna Jianwen Shao Musa Adamu |
| author_sort | Kexiao Wu |
| collection | DOAJ |
| description | Polyurethane (PU)-based Mortar (PUM) has a short curing time and high bonding ability as a new potential repair material. However, its low strength significantly limits its application in maintaining civil engineering structures. In this paper, the effect of micro steel fiber (MSF) with different aspect ratio and different dosages on the compressive strength, flexural strength, and elastic modulus of PUM was investigated. The performance of fiber at different embedment depths on the interfacial bond properties between the PU-based mortar mixture and steel fiber was explored through the fiber pull-out test. Additionally, steel fiber’s reinforcing and toughening effects were analyzed, and scanning electron microscopy (SEM) was used to analyze the microstructure of PU-based mortar reinforced with steel fiber. The results showed that the mechanical performance of PUM incorporated with two fiber types up to 3% was significantly improved. The bond strength between the micro steel fiber and PUM mixture improved with the increase in fiber volume fraction in the PU mixture. Similarly, the pull-out load and the pull-out work are increased with the increase in depth, while the interface bond strength is decreased. Additionally, based on the result obtained, the reinforcing effect of MSF in PUM can effectively refine the pores and bridge the crack formation. |
| first_indexed | 2024-03-13T04:11:10Z |
| format | Article |
| id | doaj.art-16a7c3708d5e4c088ac79953b301f9c3 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-13T04:11:10Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-16a7c3708d5e4c088ac79953b301f9c32023-06-21T06:54:33ZengElsevierCase Studies in Construction Materials2214-50952023-07-0118e02114Performance evaluation of bond strength and fiber type on the mechanical properties of polyurethane-based polymer mortarKexiao Wu0Han Zhu1Yasser E. Ibrahim2Wenlixia Jiang3S.I. Haruna4Jianwen Shao5Musa Adamu6School of Civil Engineering, Tianjin University, Tianjin 300350, ChinaSchool of Civil Engineering, Tianjin University, Tianjin 300350, China; Key Laboratory of Coast 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, ChinaSchool of Civil Engineering, Tianjin University, Tianjin 300350, China; Corresponding author.School of Civil Engineering, Tianjin University, Tianjin 300350, ChinaEngineering Management Department, College of Engineering, Prince Sultan University, Riyadh 11586, Saudi ArabiaPolyurethane (PU)-based Mortar (PUM) has a short curing time and high bonding ability as a new potential repair material. However, its low strength significantly limits its application in maintaining civil engineering structures. In this paper, the effect of micro steel fiber (MSF) with different aspect ratio and different dosages on the compressive strength, flexural strength, and elastic modulus of PUM was investigated. The performance of fiber at different embedment depths on the interfacial bond properties between the PU-based mortar mixture and steel fiber was explored through the fiber pull-out test. Additionally, steel fiber’s reinforcing and toughening effects were analyzed, and scanning electron microscopy (SEM) was used to analyze the microstructure of PU-based mortar reinforced with steel fiber. The results showed that the mechanical performance of PUM incorporated with two fiber types up to 3% was significantly improved. The bond strength between the micro steel fiber and PUM mixture improved with the increase in fiber volume fraction in the PU mixture. Similarly, the pull-out load and the pull-out work are increased with the increase in depth, while the interface bond strength is decreased. Additionally, based on the result obtained, the reinforcing effect of MSF in PUM can effectively refine the pores and bridge the crack formation.http://www.sciencedirect.com/science/article/pii/S2214509523002942PolyurethaneMicro steel fiberInterfacial strengthPull-out testMechanical propertiesPU-based mortar |
| spellingShingle | Kexiao Wu Han Zhu Yasser E. Ibrahim Wenlixia Jiang S.I. Haruna Jianwen Shao Musa Adamu Performance evaluation of bond strength and fiber type on the mechanical properties of polyurethane-based polymer mortar Case Studies in Construction Materials Polyurethane Micro steel fiber Interfacial strength Pull-out test Mechanical properties PU-based mortar |
| title | Performance evaluation of bond strength and fiber type on the mechanical properties of polyurethane-based polymer mortar |
| title_full | Performance evaluation of bond strength and fiber type on the mechanical properties of polyurethane-based polymer mortar |
| title_fullStr | Performance evaluation of bond strength and fiber type on the mechanical properties of polyurethane-based polymer mortar |
| title_full_unstemmed | Performance evaluation of bond strength and fiber type on the mechanical properties of polyurethane-based polymer mortar |
| title_short | Performance evaluation of bond strength and fiber type on the mechanical properties of polyurethane-based polymer mortar |
| title_sort | performance evaluation of bond strength and fiber type on the mechanical properties of polyurethane based polymer mortar |
| topic | Polyurethane Micro steel fiber Interfacial strength Pull-out test Mechanical properties PU-based mortar |
| url | http://www.sciencedirect.com/science/article/pii/S2214509523002942 |
| work_keys_str_mv | AT kexiaowu performanceevaluationofbondstrengthandfibertypeonthemechanicalpropertiesofpolyurethanebasedpolymermortar AT hanzhu performanceevaluationofbondstrengthandfibertypeonthemechanicalpropertiesofpolyurethanebasedpolymermortar AT yassereibrahim performanceevaluationofbondstrengthandfibertypeonthemechanicalpropertiesofpolyurethanebasedpolymermortar AT wenlixiajiang performanceevaluationofbondstrengthandfibertypeonthemechanicalpropertiesofpolyurethanebasedpolymermortar AT siharuna performanceevaluationofbondstrengthandfibertypeonthemechanicalpropertiesofpolyurethanebasedpolymermortar AT jianwenshao performanceevaluationofbondstrengthandfibertypeonthemechanicalpropertiesofpolyurethanebasedpolymermortar AT musaadamu performanceevaluationofbondstrengthandfibertypeonthemechanicalpropertiesofpolyurethanebasedpolymermortar |