Effect of transitional aluminas on Portland cement hydration, phase assemblage and the correlation to ASR preventing effectiveness

2022 ◽  
Vol 151 ◽  
pp. 106622
Author(s):  
Jin Zhou ◽  
Lou Chen ◽  
Zanqun Liu ◽  
Fuqiang He ◽  
Keren Zheng
Keyword(s):  
Portland Cement ◽  
Cement Hydration ◽  
Phase Assemblage ◽  
Portland Cement Hydration

Studies on the size effects of nano-TiO2 on Portland cement hydration with different water to solid ratios

2020 ◽  
Vol 259 ◽  
pp. 120390
Author(s):  
Jinfeng Sun ◽  
Liang Tian ◽  
Zhuqing Yu ◽  
Yu Zhang ◽  
Chengdong Li ◽  
...  
Keyword(s):  
Portland Cement ◽  
Size Effects ◽  
Cement Hydration ◽  
Nano Tio2 ◽  
Portland Cement Hydration

Influence of Clutch Disc Waste (Grinding Dust) on Portland Cement Hydration

2019 ◽  
Vol 803 ◽  
pp. 284-288
Author(s):  
José da Silva Andrade Neto ◽  
Tiago Assunção Santos ◽  
Raphael Dias Mariano ◽  
Marcio Raymundo Morelli ◽  
Daniel Véras Ribeiro
Keyword(s):  
Portland Cement ◽  
Propagation Velocity ◽  
Pulse Propagation ◽  
Cement Hydration ◽  
Setting Time ◽  
Reference Sample ◽  
Ultrasonic Pulse ◽  
X Ray Diffraction ◽  
Copper Zinc ◽  
Portland Cement Hydration

This paper evaluates the effect of grinding dust (GD), a waste generated in the clutch disc finishing process, on Portland cement hydration. For this, pastes with additions of 5%, 10% and 15% GD, relative to cement weight, were molded and compared with a reference sample. Tests of setting time determination by Vicat needle, calorimetry, monitoring the ultrasonic pulse propagation velocity and mineralogical analysis (X-ray diffraction) in pastes with 1 day of hydration were carried out. It was observed that GD, due to the presence of copper, zinc and phenolic resin in its composition, is responsible for retarding cement hydration and thus increases the setting time and delays the evolution of heat release and pulse propagation velocity. However, the formation of new crystalline phases was not observed.

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