Shrinkage of Blended Cement Pastes with Mineral Additions

Abstract:

Mineral additions such as fly ash and silica fume are industrial by products, and play an important role in properties improvement for construction materials. In this work, the shrinkage of cement paste blended with fly ash and silica fume by different substitute ratio was studied. Pore structures of specimens at different ages were determined by mercury intrusion porosimetry (MIP) and shrinkage deformation was measured by standard shrinkage tests. The effects of mineral addtions on shrinkage were discussed. The results show that the fly ash was significantly effective on shrinkage at early ages. Based on the research, several suitable advices were offered to optimize the performances of materials and reduce the shrinkage.

• Periodical: Key Engineering Materials (Volume 539)
• Pages: 55-59
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.539.55
• Online since: January 2013
• Authors: Yi Chen, Wu Yao, Dan Jin
• Keywords: Blended Cement Pastes, Microstructure, Mineral Addtion, Shrinkage

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