Microstructure and microanalysis of hardened cement pastes involving ground granulated blast-furnace slag

1992 ◽  
Vol 27 (22) ◽  
pp. 6204-6212 ◽  
Author(s):  
I. G. Richardson ◽  
G. W. Groves
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Hardened Cement ◽  
Cement Pastes ◽  
Granulated Blast Furnace Slag ◽  
Hardened Cement Pastes ◽  
Furnace Slag

Utilization of Ground Granulated Blast-Furnace Slag Seed Crystal in Eco-Cement

2011 ◽  
Vol 250-253 ◽  
pp. 870-874
Author(s):  
Hong Mei Ai ◽  
Jing Wei ◽  
Jun Ying Bai ◽  
Pu Guang Lu
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Sintering Temperature ◽  
Seed Crystal ◽  
Cement Clinker ◽  
X Ray Diffraction ◽  
Cement Pastes ◽  
Granulated Blast Furnace Slag ◽  
Lower Temperature ◽  
Furnace Slag

Eco-cement produced from waste concrete was proved to be feasible in early research. The seed crystal of ground granulated blast furnace slag (GGBS) was utilized in this research to lower the sintering temperature of eco-cement clinker. The mineral compositions of clinker with GGBS seed crystal was analyzed by X-ray diffraction (XRD), and the mechanical properties of eco-cement with GGBS seed crystal was also tested. Four main cement minerals were all observed in eco-cement clinker and the compressive strength of the eco-cement pastes can approach to about 66 MPa at 28 curing days. The results showed that GGBS seed crystal was favourable for the formation of cement minerals at a lower temperature. It can help reduce by about 50~100°C for the sintering process of cement clinker. Content of GGBS seed crystal should better be in the rage of 5%~8%, and the suitable sintering temperature should be 1350°C.

Models for Predicting Free Water and Specific Heat of Pastes Containing Ground Granulated Blast Furnace Slag

2016 ◽  
Vol 860 ◽  
pp. 135-139 ◽  
Author(s):  
Arosha Dabarera ◽  
Warangkana Saengsoy ◽  
Kanako Mori ◽  
Somnuk Tangtermsirikul
Keyword(s):  
Blast Furnace ◽  
Specific Heat ◽  
Blast Furnace Slag ◽  
Free Water ◽  
Early Age ◽  
Cement Pastes ◽  
Granulated Blast Furnace Slag ◽  
Free Water Content ◽  
High Specific Heat ◽  
Furnace Slag

This paper aims to investigate early age behavior in terms of free water content and specific heat for hardening cement paste incorporating Ground Granulated Blast Furnace Slag. Experiments were conducted to obtain free water and specific heat of slag-cement pastes by varying water to binder ratios and slag replacement levels. Free water to total binder ratios for pastes with w/b of 0.40 and slag replacements of 45% and 75% are 0.23 and 0.25 at 3 days and 0.17 and 0.19 at 28 days, respectively. Specific heat values for similar mixtures are 0.26 and 0.30 at 3 days and 0.23 and 0.25 at 28 days. Results showed that specific heat decreases as the amount of free water decreases. The slag substitution resulted in high specific heat and free water at early age but tends to decrease in long term due to enhanced reaction kinetics. Models were proposed to compute free water and specific heat by modifying existing models. The model simulations can be used to predict the measured values accurately.

scholarly journals A Study on the Behavior of Hexavalent Chromium in Hardened Cement using Ground Granulated Blast furnace Slag

2021 ◽  
Vol 32 (0) ◽  
pp. 25-33
Author(s):  
Shinya Hiramoto ◽  
Koichiro Uemura ◽  
Yusuke Otsuka ◽  
Yasuhiro Dan
Keyword(s):  
Blast Furnace ◽  
Hexavalent Chromium ◽  
Blast Furnace Slag ◽  
Hardened Cement ◽  
Granulated Blast Furnace Slag ◽  
Furnace Slag

scholarly journals Surface Characteristics of Portland Cement/Blast Furnace Slag Mixtures

1996 ◽  
Vol 13 (6) ◽  
pp. 461-467 ◽  
Author(s):  
Kh.A. Khalil
Keyword(s):  
Blast Furnace ◽  
Portland Cement ◽  
Blast Furnace Slag ◽  
Surface Characteristics ◽  
Hydration Products ◽  
Cement Pastes ◽  
Degree Of Hydration ◽  
Granulated Blast Furnace Slag ◽  
Granulated Slag ◽  
Furnace Slag

The effect of the degree of hydration and amounts of granulated blast furnace slag on the surface properties of Portland cement pastes were studied. The results obtained showed that the specific surface area SBET (m2/g) and pore volume Vp (cm3/g) decreased on increasing the degree of hydration. The addition of different amounts of granulated slag effected a decrease in SBET and Vp to an extent proportional to the amount present. These results were attributed to a replacement of clinker by the amounts of slag added and the formation of hydration products.

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