Pore Structure Analysis of Portland Cement and Blended Portland Cements Cured under Hydrothermal Conditions
作者： Tomáš Ifka , Martin Palou , Marta Kuliffayova , Martin Boháč , Františka Frajkorová
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.1000.235
关键词:
摘要: The pore structure of Portland cement pastes cured under different hydrothermal regimes was analyzed. Pore size distribution (PSD), hydraulic permeability coefficient (HK) and porosity (P) were found depending on temperature steam pressure. With increasing characteristics, the structures degraded causing depletion in compressive strength. Then, blast furnace slag (BFS) silica fume (SF) added to PC similar conditions. It that greatly improved. effect curing may be interpreted by intensity position peak, length bimodal characteristic PSD. maximum concentration pores reference paste lies range 10 – 103 nm, changes progressively < nm with addition BFS SF. This behavior is attributed mainly presence Microstructure analysis shows hydrate products like needle CSH CASH, which stable curing.
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