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Enhanced damping properties of cement paste containing polyurethane and its improvement mechanism
•Dynamic mechanical analysis test was conducted to analyze damping performance of PUC.•Damping performance was analyzed at different PU content, w/c ratio, frequency and temperature.•XRD, MIP and SEM were adopted to characterize the microstructures of the PUC.•The damping improvement mechanism of PU...
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Published in: | Construction & building materials 2023-01, Vol.364, p.129986, Article 129986 |
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description | •Dynamic mechanical analysis test was conducted to analyze damping performance of PUC.•Damping performance was analyzed at different PU content, w/c ratio, frequency and temperature.•XRD, MIP and SEM were adopted to characterize the microstructures of the PUC.•The damping improvement mechanism of PUC was summarized.
Incorporating polyurethane (PU) in cement paste improved its energy dissipation and damping properties. The damping improvement mechanism of polyurethane cement paste (PUC) was the focus of this research. In the paper, the effects of PU (0%, 5%, 10%, 20%, 30%, and 40%) and w/c (0.35, 0.45, and 0.55) on the static mechanical and damping properties of PUC were investigated. Simultaneously, combining XRD, SEM, and MIP, the microscopic mechanism was also analyzed. The results showed that both the static mechanical strength and storage modulus of PUC were lower than that of the reference group, and the early compressive strength was greatly affected by PU. Meanwhile, the damping capacities of PUC was obviously superior to that of cement paste. Better damping performance was obtained with increasing PU content, while the change of w/c had relatively little effect on PUC. Damping properties of PUC were sensitive to temperature change, and less sensitive to frequency change. Microstructural analysis of PUC showed that no new hydration products were produced due to the addition of PU, but cement hydration was hindered. In addition, the porosity of PUC was significantly increased. All this led to a decrease in mechanical properties. Based on test results, the damping improvement mechanism of PUC was mainly related to the hysteresis effect of PU, porous structure and microstructures in the matrix. |
doi_str_mv | 10.1016/j.conbuildmat.2022.129986 |
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Incorporating polyurethane (PU) in cement paste improved its energy dissipation and damping properties. The damping improvement mechanism of polyurethane cement paste (PUC) was the focus of this research. In the paper, the effects of PU (0%, 5%, 10%, 20%, 30%, and 40%) and w/c (0.35, 0.45, and 0.55) on the static mechanical and damping properties of PUC were investigated. Simultaneously, combining XRD, SEM, and MIP, the microscopic mechanism was also analyzed. The results showed that both the static mechanical strength and storage modulus of PUC were lower than that of the reference group, and the early compressive strength was greatly affected by PU. Meanwhile, the damping capacities of PUC was obviously superior to that of cement paste. Better damping performance was obtained with increasing PU content, while the change of w/c had relatively little effect on PUC. Damping properties of PUC were sensitive to temperature change, and less sensitive to frequency change. Microstructural analysis of PUC showed that no new hydration products were produced due to the addition of PU, but cement hydration was hindered. In addition, the porosity of PUC was significantly increased. All this led to a decrease in mechanical properties. Based on test results, the damping improvement mechanism of PUC was mainly related to the hysteresis effect of PU, porous structure and microstructures in the matrix.</description><identifier>ISSN: 0950-0618</identifier><identifier>EISSN: 1879-0526</identifier><identifier>DOI: 10.1016/j.conbuildmat.2022.129986</identifier><language>eng</language><publisher>Elsevier Ltd</publisher><subject>Damping property ; Hysteresis effect ; Improvement mechanism ; Microstructure ; Polyurethane</subject><ispartof>Construction & building materials, 2023-01, Vol.364, p.129986, Article 129986</ispartof><rights>2022 Elsevier Ltd</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c321t-ab9b8756430448b1b7acf68a50995d9519021a8c8f07fb35a301d81b32fc5a033</citedby><cites>FETCH-LOGICAL-c321t-ab9b8756430448b1b7acf68a50995d9519021a8c8f07fb35a301d81b32fc5a033</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Chen, Jun Hao</creatorcontrib><creatorcontrib>Zeng, Xiao Hui</creatorcontrib><creatorcontrib>Yang, Jiang Fan</creatorcontrib><creatorcontrib>Long, Guang Cheng</creatorcontrib><creatorcontrib>Xie, You Jun</creatorcontrib><title>Enhanced damping properties of cement paste containing polyurethane and its improvement mechanism</title><title>Construction & building materials</title><description>•Dynamic mechanical analysis test was conducted to analyze damping performance of PUC.•Damping performance was analyzed at different PU content, w/c ratio, frequency and temperature.•XRD, MIP and SEM were adopted to characterize the microstructures of the PUC.•The damping improvement mechanism of PUC was summarized.
Incorporating polyurethane (PU) in cement paste improved its energy dissipation and damping properties. The damping improvement mechanism of polyurethane cement paste (PUC) was the focus of this research. In the paper, the effects of PU (0%, 5%, 10%, 20%, 30%, and 40%) and w/c (0.35, 0.45, and 0.55) on the static mechanical and damping properties of PUC were investigated. Simultaneously, combining XRD, SEM, and MIP, the microscopic mechanism was also analyzed. The results showed that both the static mechanical strength and storage modulus of PUC were lower than that of the reference group, and the early compressive strength was greatly affected by PU. Meanwhile, the damping capacities of PUC was obviously superior to that of cement paste. Better damping performance was obtained with increasing PU content, while the change of w/c had relatively little effect on PUC. Damping properties of PUC were sensitive to temperature change, and less sensitive to frequency change. Microstructural analysis of PUC showed that no new hydration products were produced due to the addition of PU, but cement hydration was hindered. In addition, the porosity of PUC was significantly increased. All this led to a decrease in mechanical properties. Based on test results, the damping improvement mechanism of PUC was mainly related to the hysteresis effect of PU, porous structure and microstructures in the matrix.</description><subject>Damping property</subject><subject>Hysteresis effect</subject><subject>Improvement mechanism</subject><subject>Microstructure</subject><subject>Polyurethane</subject><issn>0950-0618</issn><issn>1879-0526</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNqNkMtOwzAQRS0EEqXwD-YDEsZ27dhLVJWHVIkNrK2J44Cr5iHbrdS_JyUsWLKaxZ1zZ3QIuWdQMmDqYVe6oa8PYd90mEsOnJeMG6PVBVkwXZkCJFeXZAFGQgGK6Wtyk9IOABRXfEFw039h73xDG-zG0H_SMQ6jjzn4RIeWOt_5PtMRU_Z0OpUx9D9bw_50iD5PsKfYNzTkREM3wceZ6LybspC6W3LV4j75u9-5JB9Pm_f1S7F9e35dP24LJzjLBdam1pVUKwGrla5ZXaFrlUYJxsjGSGaAM9ROt1C1tZAogDWa1YK3TiIIsSRm7nVxSCn61o4xdBhPloE9u7I7-8eVPbuys6uJXc-snx48Bh9tcsGftYToXbbNEP7R8g2oP3rf</recordid><startdate>20230118</startdate><enddate>20230118</enddate><creator>Chen, Jun Hao</creator><creator>Zeng, Xiao Hui</creator><creator>Yang, Jiang Fan</creator><creator>Long, Guang Cheng</creator><creator>Xie, You Jun</creator><general>Elsevier Ltd</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20230118</creationdate><title>Enhanced damping properties of cement paste containing polyurethane and its improvement mechanism</title><author>Chen, Jun Hao ; Zeng, Xiao Hui ; Yang, Jiang Fan ; Long, Guang Cheng ; Xie, You Jun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c321t-ab9b8756430448b1b7acf68a50995d9519021a8c8f07fb35a301d81b32fc5a033</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Damping property</topic><topic>Hysteresis effect</topic><topic>Improvement mechanism</topic><topic>Microstructure</topic><topic>Polyurethane</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chen, Jun Hao</creatorcontrib><creatorcontrib>Zeng, Xiao Hui</creatorcontrib><creatorcontrib>Yang, Jiang Fan</creatorcontrib><creatorcontrib>Long, Guang Cheng</creatorcontrib><creatorcontrib>Xie, You Jun</creatorcontrib><collection>CrossRef</collection><jtitle>Construction & building materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chen, Jun Hao</au><au>Zeng, Xiao Hui</au><au>Yang, Jiang Fan</au><au>Long, Guang Cheng</au><au>Xie, You Jun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Enhanced damping properties of cement paste containing polyurethane and its improvement mechanism</atitle><jtitle>Construction & building materials</jtitle><date>2023-01-18</date><risdate>2023</risdate><volume>364</volume><spage>129986</spage><pages>129986-</pages><artnum>129986</artnum><issn>0950-0618</issn><eissn>1879-0526</eissn><abstract>•Dynamic mechanical analysis test was conducted to analyze damping performance of PUC.•Damping performance was analyzed at different PU content, w/c ratio, frequency and temperature.•XRD, MIP and SEM were adopted to characterize the microstructures of the PUC.•The damping improvement mechanism of PUC was summarized.
Incorporating polyurethane (PU) in cement paste improved its energy dissipation and damping properties. The damping improvement mechanism of polyurethane cement paste (PUC) was the focus of this research. In the paper, the effects of PU (0%, 5%, 10%, 20%, 30%, and 40%) and w/c (0.35, 0.45, and 0.55) on the static mechanical and damping properties of PUC were investigated. Simultaneously, combining XRD, SEM, and MIP, the microscopic mechanism was also analyzed. The results showed that both the static mechanical strength and storage modulus of PUC were lower than that of the reference group, and the early compressive strength was greatly affected by PU. Meanwhile, the damping capacities of PUC was obviously superior to that of cement paste. Better damping performance was obtained with increasing PU content, while the change of w/c had relatively little effect on PUC. Damping properties of PUC were sensitive to temperature change, and less sensitive to frequency change. Microstructural analysis of PUC showed that no new hydration products were produced due to the addition of PU, but cement hydration was hindered. In addition, the porosity of PUC was significantly increased. All this led to a decrease in mechanical properties. Based on test results, the damping improvement mechanism of PUC was mainly related to the hysteresis effect of PU, porous structure and microstructures in the matrix.</abstract><pub>Elsevier Ltd</pub><doi>10.1016/j.conbuildmat.2022.129986</doi></addata></record> |
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subjects | Damping property Hysteresis effect Improvement mechanism Microstructure Polyurethane |
title | Enhanced damping properties of cement paste containing polyurethane and its improvement mechanism |
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