Numerical method to model the creep of recycled aggregate concrete by considering the old attached mortar
Experimental creep tests have shown that recycled aggregate in concrete increases its displacement rate. In order to explore this behavior, multiscale modeling has been performed. To consider the old attached mortar surrounding recycled aggregates, creep parameters were calculated from the cement hy...
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| Veröffentlicht in: | Cement and concrete research 2019-04, Vol.118, p.14-24 |
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| creator | Guo, Menghuan Grondin, Frédéric Loukili, Ahmed |
| description | Experimental creep tests have shown that recycled aggregate in concrete increases its displacement rate. In order to explore this behavior, multiscale modeling has been performed. To consider the old attached mortar surrounding recycled aggregates, creep parameters were calculated from the cement hydrates scale. Sixteen ordinary mortars were calculated to have a large range of values. A homogenization model was applied to calculate the viscoelastic properties. At the concrete scale, in order to take into account the influence of the heterogeneity of the recycled material, a creep-damage coupling model was used. The proposed numerical method demonstrates that the viscoelastic strain of recycled aggregates is not negligible, and leads to a larger creep displacement and higher damage level. Its influence on the time-dependent behavior of recycled aggregate concrete should be considered in modeling. |
| doi_str_mv | 10.1016/j.cemconres.2019.01.008 |
| format | Article |
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In order to explore this behavior, multiscale modeling has been performed. To consider the old attached mortar surrounding recycled aggregates, creep parameters were calculated from the cement hydrates scale. Sixteen ordinary mortars were calculated to have a large range of values. A homogenization model was applied to calculate the viscoelastic properties. At the concrete scale, in order to take into account the influence of the heterogeneity of the recycled material, a creep-damage coupling model was used. The proposed numerical method demonstrates that the viscoelastic strain of recycled aggregates is not negligible, and leads to a larger creep displacement and higher damage level. 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Its influence on the time-dependent behavior of recycled aggregate concrete should be considered in modeling.</description><subject>Aggregates</subject><subject>Concrete aggregates</subject><subject>Creep</subject><subject>Creep tests</subject><subject>Engineering Sciences</subject><subject>Hydrates</subject><subject>Mathematical models</subject><subject>Modeling</subject><subject>Mortars (material)</subject><subject>Numerical analysis</subject><subject>Numerical methods</subject><subject>Old mortar</subject><subject>Recycled aggregate concrete</subject><subject>Recycled materials</subject><subject>Time dependence</subject><subject>Viscoelastic</subject><subject>Viscoelasticity</subject><issn>0008-8846</issn><issn>1873-3948</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNqFUV1LwzAUDaLgnP4GCz750Jo0bdo-jqFOGPqizyFNbtuUtplJNti_N3WyVyGQ-3HO4d57ELonOCGYsKc-kTBKM1lwSYpJlWCSYFxeoAUpCxrTKisv0QKHUlyWGbtGN871IWUpLRdIv-9HsFqKIRrBd0ZF3kSjUTBEvoNIWoBdZJrIgjzKAVQk2tZCK3zomSm0Q1Af59hpFYSm9pdnhoD0XsguUEZjvbC36KoRg4O7v3-Jvl6eP9ebePvx-rZebWOZsdzHQlSKFUJVkIPMIC2wbPKa4qZiAIxl0ORZI5msMc1KVQsqgBUZzsuqrqEpKF2ix5NuJwa-s3oU9siN0Hyz2vK5NhPzCpMDCdiHE3ZnzfcenOe92dspjMfTFIdHCE0DqjihpDXOWWjOsgTz2QPe87MHfPaAY8LDwQNzdWJCWPigwXInNUwSlA4H9VwZ_a_GD-jNlXM</recordid><startdate>20190401</startdate><enddate>20190401</enddate><creator>Guo, Menghuan</creator><creator>Grondin, Frédéric</creator><creator>Loukili, Ahmed</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><general>Elsevier</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>FR3</scope><scope>JG9</scope><scope>KR7</scope><scope>1XC</scope><scope>VOOES</scope></search><sort><creationdate>20190401</creationdate><title>Numerical method to model the creep of recycled aggregate concrete by considering the old attached mortar</title><author>Guo, Menghuan ; Grondin, Frédéric ; Loukili, Ahmed</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c465t-aa9d67ad9e5ec4e270cf5b30f96ee664ef54fc6cb0348dba3ae6740589bbef733</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Aggregates</topic><topic>Concrete aggregates</topic><topic>Creep</topic><topic>Creep tests</topic><topic>Engineering Sciences</topic><topic>Hydrates</topic><topic>Mathematical models</topic><topic>Modeling</topic><topic>Mortars (material)</topic><topic>Numerical analysis</topic><topic>Numerical methods</topic><topic>Old mortar</topic><topic>Recycled aggregate concrete</topic><topic>Recycled materials</topic><topic>Time dependence</topic><topic>Viscoelastic</topic><topic>Viscoelasticity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Guo, Menghuan</creatorcontrib><creatorcontrib>Grondin, Frédéric</creatorcontrib><creatorcontrib>Loukili, Ahmed</creatorcontrib><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>Hyper Article en Ligne (HAL) (Open Access)</collection><jtitle>Cement and concrete research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Guo, Menghuan</au><au>Grondin, Frédéric</au><au>Loukili, Ahmed</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Numerical method to model the creep of recycled aggregate concrete by considering the old attached mortar</atitle><jtitle>Cement and concrete research</jtitle><date>2019-04-01</date><risdate>2019</risdate><volume>118</volume><spage>14</spage><epage>24</epage><pages>14-24</pages><issn>0008-8846</issn><eissn>1873-3948</eissn><abstract>Experimental creep tests have shown that recycled aggregate in concrete increases its displacement rate. 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| ispartof | Cement and concrete research, 2019-04, Vol.118, p.14-24 |
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| language | eng |
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| source | Access via ScienceDirect (Elsevier) |
| subjects | Aggregates Concrete aggregates Creep Creep tests Engineering Sciences Hydrates Mathematical models Modeling Mortars (material) Numerical analysis Numerical methods Old mortar Recycled aggregate concrete Recycled materials Time dependence Viscoelastic Viscoelasticity |
| title | Numerical method to model the creep of recycled aggregate concrete by considering the old attached mortar |
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