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Solid‑state synthesis of the RGO‑Ba(OH)2/CeO2/TiO2 novel electrode for energy storage performance
Sreenivasa Kumar Godlaveeti,Sai Kumar Arla,Adinarayana Reddy Somala,Sambasivam Sangaraju,Asma A. Alothman,Mohammed Mushab,Ramamanohar Reddy Nagireddy,Gopal Ramalingam 한국탄소학회 2024 Carbon Letters Vol.34 No.2
Yum, Woo Sung,Jeong, Yeonung,Song, Heamin,Oh, Jae Eun Elsevier 2018 Construction and Building Materials Vol.185 No.-
<P><B>Abstract</B></P> <P>This study explored the possibility of using limestone fines (LF) as a supplementary material in activated slag binder systems using two types of activators (i.e., 10 wt% of Ca(OH)<SUB>2</SUB> or 10 wt% of Ba(OH)<SUB>2</SUB>) and investigated the interactions of the activators with LF in each binder system through strength testing, powder X-ray diffraction, thermogravimetry, and mercury intrusion porosimetry. Using these binders, concrete brick samples containing LF were also made and examined for possible industrial applications. Although the influences of the LF addition on the strength, dissolution degree of the slag, reaction products, and pore-size distribution depended on the type and dosage of the activator, the addition was generally advantageous for all these aspects in both types of activations. The concrete brick made of 20 wt% LF using the Ba(OH)<SUB>2</SUB> activation fulfilled the Korean standard requirements of strength and water absorption for concrete bricks, and it also satisfied the criteria of the leaching test for possible toxic elements.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Limestone fines (LF) was studied as a supplementary material in activated slags. </LI> <LI> Main activators for slag were Ca(OH)<SUB>2</SUB> or Ba(OH)<SUB>2</SUB>. </LI> <LI> At early ages, the use of LF significantly improved strength in both activations. </LI> <LI> The use of LF significantly changed reaction products of Ba(OH)<SUB>2</SUB> activation. </LI> <LI> However, the use LF did not alter reaction products of Ca(OH)<SUB>2</SUB> activation. </LI> </UL> </P>