Application of encapsulated lightweight aggregate impregnated with sodium monofluorophosphate as a self-healing agent in blast furnace slag mortar

Title

Application of encapsulated lightweight aggregate impregnated with sodium monofluorophosphate as a self-healing agent in blast furnace slag mortar

 Author

Sisomphon, K.
Copuroglu, O.
Fraaij, A.

Date

2011-03-31

 Abstract

This paper studies the potential of using expanded clay lightweight aggregate impregnated with sodium monofluorophosphate (Na2FPO3) solution which is eventually encapsulated by a cement paste layer to produce a self-healing system in blast furnace slag cement mortars. It was found that the technique significantly improved the quality of the interfacial transition zone in mortars subjected to carbonation shrinkage. Consequently the frost salt scaling durability of blast furnace slag mortars was evidently promoted. The findings from ESEM and EDS studies showed that the healing mechanism would be due to the combination of treatment by Na2FPO3 solution and calcium hydroxide supplied from the cement paste coating layer.

 Subject

Blast furnace slag cement
capillary water absorption
carbonation
freezing and thawing
sodium monofluorophosphate
self-healing

 To reference this document use:

http://resolver.tudelft.nl/uuid:989836d6-dd5c-4bb0-8d9f-925390dddbae

 ISBN

1574-4078

 Source

Heron, 56 (1/2)

 Part of collection

Institutional Repository

 Document type

journal article

 Rights

(c) 2011 Sisomphon, K.
Copuroglu, O.
Fraaij, A.
Files
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