... conditions with the aim of achieving an ‘equivalent hydration’ comparable to that of a Portland cement cured for 28 days. Specimens were subsequently exposed to carbonation and elevated temperature (80°C) for 1 year, after which their residual mechanical performance was evaluated. It was found that, when...

...Ningmin Ou; Meng Zhou; Xin Yan; Xiaofeng Li; Jionqi Chen; Huiyu Chao; Xiaowei Ouyang; Yiqun Guo; Mingzhong Zhang The effects of carbonation treatment on recycled concrete powder ( RP ) derived from demolished concrete and its impact on the mechanical properties of cement paste were explored...

...Dongping Li; Gaojie Liu; Xiaobin Wei; Xiaolei Wang; Yaoyao Zhao; Yapeng Cao; Zhonghao Li Alkali-activated foam pastes (AAFPs) have significantly different hydration and carbonation mechanisms compared with ordinary Portland cement ( OPC ) pastes. An accurate determination of the carbonation depth...

...Gemma Rodríguez de Sensale The carbonation of Portland cements with different percentages of residual rice husk ashes (RRHA1 and RRHA2) and limestone filler ( LF ) as cement substitutions were studied according to UNE EN 13295 in binary mixtures with one of the mineral admixtures and ternary...

...Daeik Jang; Jinho Bang; Haemin Jeon This study explores the fabrication of cement-based sensors blended with supplementary cementitious materials (SCM) using carbonation curing. The effects of SCM types (i.e. fly ash or slag) and curing conditions on degree of carbon dioxide uptake, compressive...

... performance after carbonation. To investigate the effect of carbonation on microstructure, X-ray diffraction profiles of the RMC samples were obtained and analysed. It was found that the strength of the RMCs was highly affected by the dosage of RM and the curing regime. In spite of the presence...

...Linnu Lu; Peng Wang; Yongjia He; Ma Jie; Fazhou Wang; Shuguang Hu An approach for the efficient re-utilisation of waste cement paste powders is proposed, wherein the powders are heated to a certain temperature to prepare regenerated binding materials (RBMs), and then rapidly carbonated by high...

... as studied by thermogravimetric analysis up to 90 days confirms the action of pozzolanicity. Furthermore, to determine the feasibility of CBP1 and CBP2 fractions in concrete, the strength and carbonation of M25 grade concrete were studied by replacing 45% cement with a combined proportion of CBP1 (20...

...Maciej Zajac; Magdalena Król; Frank Bullerjahn; Jan Deja In this work, an approach towards a carbon-neutral cement industry using carbon dioxide mineralisation of recycled concrete paste is investigated. It focuses on the effect of temperature on the enforced carbonation of cement paste...

... benefits. The compressive strength, carbonation, chloride ion penetration, water absorption and permeability of two high-volume FA mix designs incorporating 80% class F ultrafine FA (known as microash) and hydrated lime, with and without the addition of silica fume (SF) were investigated in this study...