Strength enhancement of CaO-activated slag system through addition of calcium formate as a new auxiliary activator

2020 ◽  
Vol 109 ◽  
pp. 103572 ◽  
Author(s):  
Woo Sung Yum ◽  
Jung-Il Suh ◽  
Dongho Jeon ◽  
Jae Eun Oh
Keyword(s):  
Slag System ◽  
Strength Enhancement ◽  
Calcium Formate ◽  
Activated Slag

Influence of aluminum sulfate on strength of CaO-activated slag system

2021 ◽  
Vol 306 ◽  
pp. 124895
Author(s):  
Yansheng Tian ◽  
Jun Xing ◽  
Yingliang Zhao ◽  
Xiaogang Sun ◽  
Pinqi Wu ◽  
...  
Keyword(s):  
Aluminum Sulfate ◽  
Slag System ◽  
Activated Slag

scholarly journals Gypsum-Dependent Effect of NaCl on Strength Enhancement of CaO-Activated Slag Binders

2018 ◽  
Vol 8 (12) ◽  
pp. 2515 ◽  
Author(s):  
Sungwon Sim ◽  
Hwan Lee ◽  
Dongho Jeon ◽  
Haemin Song ◽  
Woo Yum ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Binder System ◽  
Sulfate Ions ◽  
Dependent Effect ◽  
Strength Enhancement ◽  
Granulated Blast Furnace Slag ◽  
Significant Strength ◽  
Activated Slag ◽  
Furnace Slag

This study explores the combined effect of NaCl and gypsum on the strength of the CaO-activated ground-granulated blast furnace slag (GGBFS) binder system. In the CaO-activated GGBFS system, the incorporation of NaCl without gypsum did not improve the strength of the system. However, with the presence of gypsum, the use of NaCl yielded significantly greater strength than the use of either gypsum or NaCl alone. The presence of NaCl largely increases the solubility of gypsum in a solution, leading to a higher concentration of sulfate ions, which is essential for generating more and faster formations of ettringite in a fresh mixture of paste. The significant strength enhancement of gypsum was likely due to the accelerated and increased formation of ettringite, accompanied by more efficient filling of pores in the system.

Influence of slag characteristics on strength development and reaction products in a CaO-activated slag system

2016 ◽  
Vol 72 ◽  
pp. 155-167 ◽  
Author(s):  
Yeonung Jeong ◽  
Hyeoneun Park ◽  
Yubin Jun ◽  
Jae Hong Jeong ◽  
Jae Eun Oh
Keyword(s):  
Slag System ◽  
Strength Development ◽  
Reaction Products ◽  
Activated Slag

Incorporation of CFBC ash in sodium silicate-activated slag system: Modification of microstructures and its effect on shrinkage

2019 ◽  
Vol 123 ◽  
pp. 105771 ◽  
Author(s):  
Hee-Jeong Kim ◽  
Million Tafesse ◽  
Hyo Kyoung Lee ◽  
Hyeong-Ki Kim
Keyword(s):  
Sodium Silicate ◽  
Slag System ◽  
Activated Slag

scholarly journals Effects of Light-Burnt Dolomite Incorporation on the Setting, Strength, and Drying Shrinkage of One-Part Alkali-Activated Slag Cement

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 2874 ◽  
Author(s):  
In Kyu Jeon ◽  
Jae Suk Ryou ◽  
Sadam Hussain Jakhrani ◽  
Hong Gi Kim
Keyword(s):  
Portland Cement ◽  
Ordinary Portland Cement ◽  
Setting Time ◽  
Drying Shrinkage ◽  
Slag System ◽  
Strength Development ◽  
Alkali Activated Slag ◽  
Granulated Blast Furnace Slag ◽  
Activated Slag ◽  
Alkali Activated

This study investigates the potential of light-burnt dolomite (LBD) as a supplementary cementitious material with ground granulated blast furnace slag (GGBFS) and Ordinary Portland cement (OPC). In this work, LBD was substituted for up to 20% of GGBFS in sodium sulfate-activated slag systems. The effects of LBD incorporation on the flow, setting time, compressive and flexural strength development, and drying shrinkage were explored with, X-ray diffraction and thermogravimetric analyses. LBD incorporation resulted in greater strength development of an alkali-activated slag system. The optimum LBD content for strength development was 10%, regardless of ordinary Portland cement content. In addition, LBD decreased the drying shrinkage, accelerated the hydration process, and induced hydrotalcite formation, which can be attributed to the reactive MgO inside LBD.

Strength Enhancement of Concrete with a Plasticizer on the Basis of Nano-Structured Carbon

2018 ◽  
Vol 760 (6) ◽  
pp. 67-72
Author(s):  
S.A. ZHDANOK ◽  
◽  
E.N. POLONINA ◽  
S.N. LEONOVICH ◽  
B.M. KHRUSTALEV ◽  
...  
Keyword(s):  
Strength Enhancement
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