Results 61 to 70 of about 35,822 (226)

Microstructural evolution in sulfate solutions of alkali-activated binders synthesized at various calcium contents

Journal of Materials Research and Technology, 2020
Alkali-activated binders based on metakaolin, fly ash and slag without curing were exposed directly in air, Na2SO4 and MgSO4 solutions for studying the evolution in mechanical strength and microstructure.
Xing Li, Owen Xu Li, Feng Rao, Shaoxian Song, Noemi Ortiz-Lara, Ena A. Aguilar-Reyes   +5 more
doaj   +1 more source

Time‐resolved synchrotron X‐ray total scattering of alkali‐activated materials with high and low calcium contents

Journal of Synchrotron Radiation, EarlyView.
Synchrotron in situ high‐energy X‐ray total scattering/pair distribution function (PDF) analysis quantifies the time‐resolved structural evolution of high and low calcium alkali‐activated binders, with PDF peak evolution tracking reaction progress and correlating with calorimetry (R2 > 0.97).
Hyeonseok Jee, Nishant Garg
wiley   +1 more source

The Characterization of Steel Slag by Alkali Activation

OALib, 2017
This paper presents a characterization analysis of alkali-activated steel slag. The effect ratio of steel slag and ferronickel slag which are the precursor materials on the compressive strength of the alkali-activated materials was investigated. The combination of sodium hydroxide solution of 15 moles concentration and sodium silicate was used as an ...
Ikmal Hakem Aziz, Khairunnisa Zulkifly, Konstantinos Sakkas, Dimitrios Panias, Georgia Maria Tsaousi, Mohd Mustafa Abdullah Al Bakri, Heah Cheng Yong   +6 more
openaire   +1 more source

Mixed‐Impurity Co‐Poisoning of NH3‐SCR Catalysts: Poisoning Mechanisms, Antagonistic Effects, and Anti‐Inactivation Strategies

EcoEnergy, Volume 4, Issue 4, August 2026.
This review summarizes the synergistic effects of mixed impurities on ammonia‐selective catalytic reduction (NH3‐SCR) catalysts, including the poisoning mechanism of the catalyst caused by mixed impurities, the antagonistic effects between the impurities, and the research on the anti‐poisoning strategies for the catalyst in recent years.
Hongyan Xue, Manas Pal, Zhaoteng Xue, Dongsen Mao   +3 more
wiley   +1 more source

Alkali activated slag based on steelmaking slag: application and properties [PDF]

, 2022
Alkali activated slag (AAS) is an environmentally friendly material which were extensively investigated in a pass two decade. Currently, these materials are considering as an effective alternative for cement binder. Process of slag alkali activation involves a chemical reaction between solid calcium aluminosilicate materials and a highly alkaline ...
Nikolić, Irena, Radmilović, Vuk V., Marković, Smilja, Veselinović, Ljiljana, Janković-Častvan, Ivona, Radmilović, Velimir R.   +5 more
openaire  

Resistance of Alkali-Activated Slag Concrete to Chloride-Induced Corrosion [PDF]

Advances in Materials Science and Engineering, 2015
The corrosion resistance of steel in alkali-activated slag (AAS) mortar was evaluated by a monitoring of the galvanic current and half-cell potential with time against a chloride-contaminated environment. For chloride transport, rapid chloride penetration test was performed, and chloride binding capacity of AAS was evaluated at a given chloride.
Joon Woo Park, Ki Yong Ann, Chang-Geun Cho   +2 more
openaire   +3 more sources

Durability of alkali activated slag in a marine environment: Influence of alkali ion [PDF]

Journal of the Serbian Chemical Society, 2018
The durability of alkali-activated steel electric arc furnace slag (EAFS) in a marine environment was evaluated with respect to the chemical composition of the alkaline activator.
Nikolić Irena, Tadić Milena, Janković-Častvan Ivona, Radmilović Vuk V., Radmilović Velimir R.   +4 more
doaj   +1 more source

Experimental study of high-temperature resistance of alkali-activated slag crushed aggregate mortar

Journal of Materials Research and Technology, 2023
Rational utilization of blast furnace slag improves resource utilization rate and is a measure to ameliorate environmental degradation and climate crisis. Alkali-activated slag cementitious material (AASCM) has high temperature resistance and can provide
Wenxuan Huang, Ying Wang, Yaming Zhang, Wenzhong Zheng   +3 more
doaj   +1 more source

Efficiency of Superplasticizers in Low‐carbon Alkali‐activated Slag–Silica Fume Binders Governed by Polymer Solubility

Journal of the American Ceramic Society, Volume 109, Issue 8, August 2026.
ABSTRACT Workability control of alkali‐activated binders (AABs) remains an obstacle to producing low‐carbon clinkerless ultra‐high‐performance concrete, as their formulation usually necessitates low water‐to‐binder (W/B) ratios, high binder content, and concentrated activator solutions. To address this challenge, a greener and more manageable composite
Shengnan Sha, Kunlin Luo, Yuhui Lyu, Hailong Ye   +3 more
wiley   +1 more source

Using Carbonated BOF Slag Aggregates in Alkali-Activated Concretes [PDF]

Materials, 2019
This experimental study aimed to develop alkali-activated concretes containing carbonated basic oxygen furnace (BOF) slag aggregates. In the first stage, the impacts of replacing normal aggregates with carbonated BOF slag aggregates in different alkali-activated concretes were determined by assessing mechanical properties (compressive and flexural ...
Alzaza Ahmad, Illikainen Mirja, Kinnunen Päivö, Woof Bethany Frances, Shaad Khaled Mohammad, Mastali Mohammad, Abdollahnejad Zahra   +6 more
openaire   +3 more sources