| Long-Term Evolution Of Delayed Ettringite And Gypsum In Portland Cement Mortars Under Sulfate Erosion | |
Chen JK ; Jiang MQ(蒋敏强)
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| Source Publication | Construction and Building Materials
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| 2009 | |
| Pages | 812-816 |
| ISSN | 0950-0618 |
| Abstract | The magnitude evolution of ettringite and gypsum in hydrated Portland cement mortars due to sulfate attack was detected by X-ray powder diffraction. The influences of sulfate concentration and water-to-cement ratio on the evolution of ettringite and gypsum were investigated. Experimental results show that the magnitude of ettringite formation in sodium sulfate solution follows a three-stage process, namely, the 'penetration period', 'enhance period of strength', and 'macro-crack period'. The cracking of concrete materials is mainly attributed to the effect of ettringite. The gypsum formations occurred in two stages, the 'latent period' and the 'accelerated period'. The gypsum formation including ettringite formation was relative to the linear expansion of mortars to some extend. Both water-to-cement ratio and sulfate concentration play important roles in the evolution of ettringite and gypsum. (C) 2008 Elsevier Ltd. All rights reserved. |
| Keyword | Ettringite Formation Gypsum Formation Portland Cement Mortars Sulfate Sodium Xrd Method Chloride Removal Concrete Expansion Attack |
| DOI | 10.1016/j.conbuildmat.2008.03.002 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000261779300025 |
| WOS Keyword | CHLORIDE REMOVAL ; CONCRETE ; EXPANSION ; ATTACK |
| WOS Research Area | Construction & Building Technology ; Engineering ; Materials Science |
| WOS Subject | Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/26634 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Chen JK |
| Recommended Citation GB/T 7714 | Chen JK,Jiang MQ. Long-Term Evolution Of Delayed Ettringite And Gypsum In Portland Cement Mortars Under Sulfate Erosion[J]. Construction and Building Materials,2009:812-816. |
| APA | Chen JK,&蒋敏强.(2009).Long-Term Evolution Of Delayed Ettringite And Gypsum In Portland Cement Mortars Under Sulfate Erosion.Construction and Building Materials,812-816. |
| MLA | Chen JK,et al."Long-Term Evolution Of Delayed Ettringite And Gypsum In Portland Cement Mortars Under Sulfate Erosion".Construction and Building Materials (2009):812-816. |
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