Blending eco-efficient calcium sulfoaluminate belite ferrite cement to enhance the physico–mechanical properties of Portland cement paste cured in refrigerated and natural winter conditions
نویسندگان
چکیده
The acceleration impacts of calcium sulfoaluminate belite ferrite (CSABF)—a cement produced from industrial side streams—on the hydration and strength development Portland (PC) paste cured at ?5 °C with without pre-curing room temperature were investigated. eco-friendly CSABF content on setting time hardened properties pastes Freezing point amount freezable water (FW) decreased pre-curing. Hydration rate increased content. By adding an optimal content, compressive by 500%. effects subzero-cured highly dependent curing period. After 6 months, outdoor-cured 70%PC/30%CSABF gained comparable to that in 90-day-old pair continuous gain was detected up one-year. microstructural observations porosity results are consistent measurements.
منابع مشابه
Effect of Calcium Carbonate Fineness on Calcium Sulfoaluminate-Belite Cement
This study investigated the hydration characteristics and strength development of calcium sulfoaluminate-belite (CSAB) cements incorporating calcium carbonate (CC) powders with various particle size distributions and different gypsum amounts. In general, the CSAB hydration was accelerated by the CC powder, but the acceleration and resulting strength improvement were more effective with finer CC...
متن کاملEffects of High Temperature on Carbonated Calcium Silicate Cement (CSC) and Ordinary Portland Cement (OPC) Paste
This paper presents a comparative study on the effects of high temperature (~500°C) on carbonated calcium silicate-based cement (CSC), hydrated ordinary Portland cement (OPC), and hydrated OPC with 20% fly ash (FA) paste samples. The CSC is primarily composed of calcium–silicate minerals with different calcium to silica atomic ratios, such as wollastonite, rankinite, and pseudowollastonite. The...
متن کاملDrying Shrinkage Mechanisms in Portland Cement Paste
The shrinkage mechanisms of portland cement paste were investigated from shrinkage, weight loss, and pore structure measurements using nitrogen sorption and mercury intrusion porosimetry (MIP). Thin samples (2.3 mm) of well-hydrated (165 d) pastes of 0.4 and 0.6 water-to-cement (W/C) ratios were dried directly from saturated surface dry state to 75%, SO%, 11%, and 0% relative humidity (rh). Fro...
متن کاملModeling of Hydration Kinetics and Shrinkage of Portland Cement Paste
MODELING OF HYDRATION KINETICS AND SHRINKAGE OF PORTLAND CEMENT PASTE
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Cement & Concrete Composites
سال: 2022
ISSN: ['0958-9465', '1873-393X']
DOI: https://doi.org/10.1016/j.cemconcomp.2022.104469