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Monitoring and detection of damage in cement composite under sulphate attack
Published in CRC Press/Balkema
Pages: 2233 - 2239
Deterioration of concrete due to sulphate attack is a major durability problem for concrete structures exposed to sulphate-rich soil and groundwater such as septic tanks, sewage pipes and water treatment plants. The continuous exposure to a sulphate-rich environment, concrete loses its strength and durability resulting in a reduction of the designed service life. The widespread occurrence of sulphate attack and the destruction caused by it have attracted researchers over the years into the study of the deterioration mechanism and methods to combat it. This paper deals with the monitoring of deterioration in concrete for accelerated sulphate environment and detecting damage using half-cell potential method, powder X-Ray diffraction and acid penetration test. The accelerated testing adopted here provides a realistic approach for predicting the deterioration of concrete under Sulphur attack. The paper demonstrates the various stages of changes occurred in cement composite during exposed environment and successfully monitored through conventional NDT Techniques. The results give in depth understanding microstructural behaviour of concrete elements during chemical attack. © 2017 Taylor & Francis Group, London.
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Published in CRC Press/Balkema
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