Effects of New Type Lime and Calcium Sulphoaluminate Expansive Agent on Deformation Properties of High Performance Concrete

DOI

10.2991/icache-15.2015.43How to use a DOI?

Keywords

Lime and calcium sulphoaluminate expansive agent; High performance concrete; Deformation properties; Microstructures

Abstract

According to the characteristics and structure of high performance concrete, influence laws of new type lime and calcium sulphoaluminate expansive agent on mechanical properties, deformation properties and microstructures of C50 concrete were investigated. The results show that with the increase of doped contents of new type expansive agent, shrinkage compensation effect on C50 concrete by expansion agent would increase as well. Limited expansion ratio of concrete with strength grade of C50 mixed with 6% expansion agent can meet the design values for post-pouring belt, expansion strengthening belt and other parts in the specification. C50 concrete can be more enhanced and compacted through mixing with 6% expansion agent. For those with age of 28d, after doped with 6% expansive agent, the pore structure of C50 concrete has been optimized. Ettringite and calcium hydroxide crystals from hydration reaction of expansive agent could be filled into the pore structures of C50 high performance concrete.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Anqun Lu
AU  - Wen Xu
AU  - Yujiang Wang
PY  - 2015/11
DA  - 2015/11
TI  - Effects of New Type Lime and Calcium Sulphoaluminate Expansive Agent on Deformation Properties of High Performance Concrete
BT  - Proceedings of the 2015 International Conference on Architectural, Civil and Hydraulics Engineering
PB  - Atlantis Press
SP  - 209
EP  - 213
SN  - 2352-5401
UR  - https://doi.org/10.2991/icache-15.2015.43
DO  - 10.2991/icache-15.2015.43
ID  - Lu2015/11
ER  -