Hydration of Early Age Cement Paste with Nano-CaCO3 and SAP by LF-NMR Spectroscopy: Mechanism and Prediction
In this paper, by testing the evolution of the physically bound water using the low-field nuclear magnetic resonance (LF-NMR) technology, the hydration process of cement paste with nano-CaCO3 (NC) and superabsorbent polymer (SAP) at early age is investigated. Results indicate that the hydration proc...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Modelling and Simulation in Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/8384051 |
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| author | Haitao Zhao Gaoyang Sun Lu Yu Kaidi Jiang Xiaodong Chen Ruiming Jia Yi Wan Shihai Li |
| author_facet | Haitao Zhao Gaoyang Sun Lu Yu Kaidi Jiang Xiaodong Chen Ruiming Jia Yi Wan Shihai Li |
| author_sort | Haitao Zhao |
| collection | DOAJ |
| description | In this paper, by testing the evolution of the physically bound water using the low-field nuclear magnetic resonance (LF-NMR) technology, the hydration process of cement paste with nano-CaCO3 (NC) and superabsorbent polymer (SAP) at early age is investigated. Results indicate that the hydration process can be divided into four periods according to the zero points of the second-order differential hydration curve: initial period, acceleration period, deceleration period, and steady period. Firstly, with the increase in the water to cement ratio, the starting time of the hydration period is delayed, and the duration becomes longer. Secondly, the addition of NC leads to the speedy arrival of each period and shortens the duration of each period in the hydration process, and the optimal NC content is 1.5%. Thirdly, with the increase in SAP content, the starting time of the hydration period is delayed and the duration becomes longer. Finally, based on the experimental results and the existing hydration model, the modified hydration model considering the content of NC and SAP is proposed. |
| format | Article |
| id | doaj-art-a3a306a0595f40cc939d54b1f68a6d8e |
| institution | Kabale University |
| issn | 1687-5591 1687-5605 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Modelling and Simulation in Engineering |
| spelling | doaj-art-a3a306a0595f40cc939d54b1f68a6d8e2025-02-03T01:21:56ZengWileyModelling and Simulation in Engineering1687-55911687-56052019-01-01201910.1155/2019/83840518384051Hydration of Early Age Cement Paste with Nano-CaCO3 and SAP by LF-NMR Spectroscopy: Mechanism and PredictionHaitao Zhao0Gaoyang Sun1Lu Yu2Kaidi Jiang3Xiaodong Chen4Ruiming Jia5Yi Wan6Shihai Li7College of Materials Science and Engineering, Southeast University, Nanjing 211189, ChinaJiangsu Testing Center for Quality of Construction Engineering Co. Ltd., Nanjing 210028, ChinaNanjing Architectural Design & Research Institute Co. Ltd., Nanjing 210005, ChinaCollege of Civil and Transportation Engineering, Hohai University, Nanjing 210098, ChinaChina Communications Construction Company Urban Investment Holding Co. Ltd., Guangzhou 510623, ChinaTong Yuan Design Group Co. Ltd., Jinan 250101, ChinaAnhui Transport Consulting & Design Institute Co., Ltd., Hefei 230088, ChinaDalian Luneng Real Estate Co. Ltd., Dalian 116000, ChinaIn this paper, by testing the evolution of the physically bound water using the low-field nuclear magnetic resonance (LF-NMR) technology, the hydration process of cement paste with nano-CaCO3 (NC) and superabsorbent polymer (SAP) at early age is investigated. Results indicate that the hydration process can be divided into four periods according to the zero points of the second-order differential hydration curve: initial period, acceleration period, deceleration period, and steady period. Firstly, with the increase in the water to cement ratio, the starting time of the hydration period is delayed, and the duration becomes longer. Secondly, the addition of NC leads to the speedy arrival of each period and shortens the duration of each period in the hydration process, and the optimal NC content is 1.5%. Thirdly, with the increase in SAP content, the starting time of the hydration period is delayed and the duration becomes longer. Finally, based on the experimental results and the existing hydration model, the modified hydration model considering the content of NC and SAP is proposed.http://dx.doi.org/10.1155/2019/8384051 |
| spellingShingle | Haitao Zhao Gaoyang Sun Lu Yu Kaidi Jiang Xiaodong Chen Ruiming Jia Yi Wan Shihai Li Hydration of Early Age Cement Paste with Nano-CaCO3 and SAP by LF-NMR Spectroscopy: Mechanism and Prediction Modelling and Simulation in Engineering |
| title | Hydration of Early Age Cement Paste with Nano-CaCO3 and SAP by LF-NMR Spectroscopy: Mechanism and Prediction |
| title_full | Hydration of Early Age Cement Paste with Nano-CaCO3 and SAP by LF-NMR Spectroscopy: Mechanism and Prediction |
| title_fullStr | Hydration of Early Age Cement Paste with Nano-CaCO3 and SAP by LF-NMR Spectroscopy: Mechanism and Prediction |
| title_full_unstemmed | Hydration of Early Age Cement Paste with Nano-CaCO3 and SAP by LF-NMR Spectroscopy: Mechanism and Prediction |
| title_short | Hydration of Early Age Cement Paste with Nano-CaCO3 and SAP by LF-NMR Spectroscopy: Mechanism and Prediction |
| title_sort | hydration of early age cement paste with nano caco3 and sap by lf nmr spectroscopy mechanism and prediction |
| url | http://dx.doi.org/10.1155/2019/8384051 |
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