A real case of steam-cured concrete track slab premature deterioration due to ASR and DEF

Deterioration mechanisms of some premature damaged steam-cured concrete track slabs (CTS) in Chinese railway less than 4 years were investigated. Field investigation, raw materials test and suspicious products analysis were carried out. Results show that steam-cured heat damage (SCHD) of concrete ta...

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Bibliographic Details
Main Authors:	Kunlin Ma, Guangcheng Long, Youjun Xie
Format:	Article
Language:	English
Published:	Elsevier 2017-06-01
Series:	Case Studies in Construction Materials
Subjects:	Concrete track slab High speed railway Fatigue load Steam-cured heat damage Alkali-silica reaction Delayed ettringite formation
Online Access:	http://www.sciencedirect.com/science/article/pii/S2214509516300602

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spelling	doaj-2821eaf038d3440a8bfe77e254f4ed1f2020-11-24T22:07:18ZengElsevierCase Studies in Construction Materials2214-50952017-06-016C637110.1016/j.cscm.2016.12.001A real case of steam-cured concrete track slab premature deterioration due to ASR and DEFKunlin Ma0Guangcheng Long1Youjun Xie2School of Civil Engineering, Central South University, Changsha 410075, ChinaSchool of Civil Engineering, Central South University, Changsha 410075, ChinaSchool of Civil Engineering, Central South University, Changsha 410075, ChinaDeterioration mechanisms of some premature damaged steam-cured concrete track slabs (CTS) in Chinese railway less than 4 years were investigated. Field investigation, raw materials test and suspicious products analysis were carried out. Results show that steam-cured heat damage (SCHD) of concrete takes place in steam-cured process. Expansion products are ettringite in hydrated products and alkali-silica gels between the interface of hydrated products and coarse aggregate. SCHD makes CTS surface layer loose, porous and more micro-cracks. Long-term fatigue load from high-speed train acting on CTS enlarges concrete microcracks, leading to water penetrating into concrete easily in moist and rainy environment. In the process of water ingression, alkali-silica reaction (ASR) and delayed ettringite formation (DEF) take place, hence resulting in CTS cracking and premature deterioration.http://www.sciencedirect.com/science/article/pii/S2214509516300602Concrete track slabHigh speed railwayFatigue loadSteam-cured heat damageAlkali-silica reactionDelayed ettringite formation
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Kunlin Ma Guangcheng Long Youjun Xie
spellingShingle	Kunlin Ma Guangcheng Long Youjun Xie A real case of steam-cured concrete track slab premature deterioration due to ASR and DEF Case Studies in Construction Materials Concrete track slab High speed railway Fatigue load Steam-cured heat damage Alkali-silica reaction Delayed ettringite formation
author_facet	Kunlin Ma Guangcheng Long Youjun Xie
author_sort	Kunlin Ma
title	A real case of steam-cured concrete track slab premature deterioration due to ASR and DEF
title_short	A real case of steam-cured concrete track slab premature deterioration due to ASR and DEF
title_full	A real case of steam-cured concrete track slab premature deterioration due to ASR and DEF
title_fullStr	A real case of steam-cured concrete track slab premature deterioration due to ASR and DEF
title_full_unstemmed	A real case of steam-cured concrete track slab premature deterioration due to ASR and DEF
title_sort	real case of steam-cured concrete track slab premature deterioration due to asr and def
publisher	Elsevier
series	Case Studies in Construction Materials
issn	2214-5095
publishDate	2017-06-01
description	Deterioration mechanisms of some premature damaged steam-cured concrete track slabs (CTS) in Chinese railway less than 4 years were investigated. Field investigation, raw materials test and suspicious products analysis were carried out. Results show that steam-cured heat damage (SCHD) of concrete takes place in steam-cured process. Expansion products are ettringite in hydrated products and alkali-silica gels between the interface of hydrated products and coarse aggregate. SCHD makes CTS surface layer loose, porous and more micro-cracks. Long-term fatigue load from high-speed train acting on CTS enlarges concrete microcracks, leading to water penetrating into concrete easily in moist and rainy environment. In the process of water ingression, alkali-silica reaction (ASR) and delayed ettringite formation (DEF) take place, hence resulting in CTS cracking and premature deterioration.
topic	Concrete track slab High speed railway Fatigue load Steam-cured heat damage Alkali-silica reaction Delayed ettringite formation
url	http://www.sciencedirect.com/science/article/pii/S2214509516300602
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A real case of steam-cured concrete track slab premature deterioration due to ASR and DEF

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