Results 31 to 40 of about 55,143 (161)

Mineral Waste Into Alkali-Activated Pavements

7th International Conference on Technologies & Business Models for Circular Economy
The study highlights the pressing need to recycle mineral waste to mitigate resource depletion and environmental damage. It focuses on creating sustainable pavement slabs through alkali activation, using a variety of waste materials such as bio-ash, local slags and mineral wool.
Pavlin, Majda, Zupančič, Kaja, Sešek Pavlin, Alenka   +2 more
openaire   +3 more sources

An experimental study on the mix design optimization of fly ash-based geopolymers [PDF]

Chemical Industry and Chemical Engineering Quarterly, 2019
Geopolymers are materials suitable for utilization in the construction industry due to their superior properties, such as high strength and good durability. The properties of geopolymers can be configured due to mix design and synthesis conditions.
Arioz Evren, Arioz Omer, Kockar Mete O.
doaj   +1 more source

A Comparative Evaluation of Three Valorisation Pathways for Waste Electric Arc Furnace Slag to Improve Its Use as an Eco-Logical Binder

Recycling
The urgent need to reduce greenhouse gas emissions and enhance resource circularity is driving the cement and construction industry to explore alternatives to clinker-based binders.
Bruno Machini, Diogo Simões, Pedro Humbert, Julieta António, João Almeida   +4 more
doaj   +1 more source

Experimental research on the development of geopolymer materials using Romanian local materials [PDF]

Constructii: Journal of Civil Engineering Research, 2018
The demand for concrete and also for the current infrastructure facilities development is experiencing worldwide exponential growth. Environmental issues associated with the production of Portland cement are very well known and therefore they are ...
Adrian LĂZĂRESCU, Henriette SZILÁGYI, Cornelia BAERĂ, Adrian IOANI, Anamaria Cătălina MIRCEA   +4 more
doaj  

Assessment of Chemical Treatment on Hemp Fiber Utilized as Reinforcement in Polymer Composites: Association of Thermal Degradation and Activation Energy of Fiber

Journal of Natural Fibers, 2022
The primary purpose of the research is to improve the surface of hemp fibers chemically. The outcome of different chemical treatments of fibers on their chemical, morphological, physical, and thermal properties has been studied.
Priyanka Soni, Shishir Sinha
doaj   +1 more source

Thermal stability and leaching behavior of alkali-activated slag doped with electric arc furnace dust [PDF]

Science of Sintering
The study presented in this paper explores the simultaneous valorization of electric arc furnace slag (EAFS) and electric arc furnace dust (EAFD) through an alkali activation process, as well as the thermal stability of the resulting product.
Tadić Nebojša, Brašanac-Vukanović Snežana, Nikolić Irena, Radmilović Vuk V., Radmilović Velimir R.   +4 more
doaj   +1 more source

Development of unfired earthen building materials using muscovite rich soils and alkali activators

Case Studies in Construction Materials, 2019
Most studies have focused on the alkali activation of thermally activated kaolinitic clays for the production of innovative building materials. Whilst the widespread use of these minerals may be hindered due to geographical availability; a combination of
Emeso Beckley Ojo, Kabiru Mustapha, Ronaldo S. Teixeira, Holmer Savastano, Jr   +3 more
doaj   +1 more source

Visualizing alkali metal aggregation-induced coordination in CO2 activation on copper

Nature Communications
Alkali metals are widely recognized as promotors in CO2 activation and conversion. However, how the alkali metals activate CO2 molecules and stabilize the reaction intermediates remains controversial due to the lack of atomic-scale characterization. Here,
Wenyu Sun, Pu Yang, Yongkang Jiang, Jingwei Zhang, Hongrun Zhang, Qingwei Jin, Chen Zhang, Zihao Zhang, Haifeng Feng, Yi Du, Zhichang Wang, Duanyun Cao, Feng Wu, Ying Jiang, Jing Guo   +14 more
doaj   +1 more source

Instantaneous activation energy of alkali activated materials

RILEM Technical Letters, 2019
Alkali activated materials (AAM) are generally cured at high temperatures to compensate for the low reaction rate. Higher temperature accelerates the reaction of AAM as in cement-based materials and this effect is generally predicted using Arrhenius ...
Shiju Joseph, Siva Uppalapati, Ozlem Cizer   +2 more
doaj   +1 more source

Single Alkali Metal Ion-Activated Porous Carbon With Heteroatom Doping for Supercapacitor Electrode

Frontiers in Chemistry, 2020
A single alkali metal ion activation method was used to prepare sulfur-doped microporous carbons. A series of alkali metal ions such as Li+, Na+, K+, and Cs+ was used in the polymerization process of 3-hydroxythiophenol and formaldehyde to obtain metal ...
Changshui Wang
doaj   +1 more source