Search Results - "Harisankar Sreenivasan"

Ag- or Cu-modified geopolymer filters for water treatment manufactured by 3D printing, direct foaming, or granulation by Luukkonen, Tero, Yliniemi, Juho, Sreenivasan, Harisankar, Ohenoja, Katja, Finnilä, Mikko, Franchin, Giorgia, Colombo, Paolo

“…In this work, we compared the main characteristics of highly porous geopolymer components for water treatment applications manufactured by 3D printing, direct…”
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Recycling mine tailings in chemically bonded ceramics – A review by Kinnunen, Paivo, Ismailov, Arnold, Solismaa, Soili, Sreenivasan, Harisankar, Räisänen, Marja-Liisa, Levänen, Erkki, Illikainen, Mirja

“…Mine tailings account for most of the environmental incidents related to the extractive industry, with risks increasing due to steadily rising tonnage of…”
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Immobilization of sulfates and heavy metals in gold mine tailings by sodium silicate and hydrated lime by Kiventerä, Jenni, Sreenivasan, Harisankar, Cheeseman, Christopher, Kinnunen, Paivo, Illikainen, Mirja

“…•Alkali activation of gold mine tailings with NaOH/Na2SiO3 and Ca(OH)2.•High Immobilization of sulfates and arsenic were achieved with hydrated lime.•The…”
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Towards designing reactive glasses for alkali activation: Understanding the origins of alkaline reactivity of Na-Mg aluminosilicate glasses by Sreenivasan, Harisankar, Cao, Wei, Hu, Yongfeng, Xiao, Qunfeng, Shakouri, Mohsen, Huttula, Marko, Provis, John L, Illikainen, Mirja, Kinnunen, Paivo

“…Alkali-activated materials (AAMs), sometimes called geopolymers, are eco-friendly cementitious materials with reduced carbon emissions when compared to…”
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Field Strength of Network-Modifying Cation Dictates the Structure of (Na-Mg) Aluminosilicate Glasses by Sreenivasan, Harisankar, Kinnunen, Paivo, Adesanya, Elijah, Patanen, Minna, Kantola, Anu M., Telkki, Ville-Veikko, Huttula, Marko, Cao, Wei, Provis, John L., Illikainen, Mirja

“…Aluminosilicate glasses are materials with a wide range of technological applications. The field strength of network-modifying cations strongly influences the…”
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Comparison of One-Part and Two-Part Alkali-Activated Metakaolin and Blast Furnace Slag by Segura, Isabel Pol, Luukkonen, Tero, Yliniemi, Juho, Sreenivasan, Harisankar, Damø, Anne Juul, Jensen, Lars Skaarup, Canut, Mariana, Kantola, Anu M., Telkki, Ville-Veikko, Jensen, Peter Arendt

“…One-part alkali-activated materials prepared with solid-form alkali activator are gaining attention in the construction industry, as they are an easier and…”
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Study of Synthetic Titania Slags Demonstrating Characteristics Similar to High Titania Ilmenite Slag by Avishek Kumar Gupta, Matti Aula, Harisankar Sreenivasan, Pasi Mäkelä, Marko Huttula, Timo Fabritius

“…The upgradation of the ilmenite ore, using a pyrometallurgy method, is performed using a carbothermic reduction of the ilmenite. A high titania slag is…”
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One-part geopolymers from mining residues – Effect of thermal treatment on three different tailings by Perumal, Priyadharshini, Piekkari, Katri, Sreenivasan, Harisankar, Kinnunen, Paivo, Illikainen, Mirja

“…[Display omitted] •Phosphate, kaolinite and lithium tailings were thermally treated at 750 °C and 900 °C.•Mineralogical characterization is an important…”
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Structural collapse in phlogopite mica-rich mine tailings induced by mechanochemical treatment and implications to alkali activation potential by Niu, He, Kinnunen, Paivo, Sreenivasan, Harisankar, Adesanya, Elijah, Illikainen, Mirja

“…[Display omitted] •More than 70% of amorphous content was obtained after 16-min grinding.•Thermal properties of all ground samples were detailed.•Schematic…”
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On the carbonation of brucite: Effects of Mg-acetate on the precipitation of hydrated magnesium carbonates in aqueous environment by Nguyen, Hoang, Santos, Hellen, Sreenivasan, Harisankar, Kunther, Wolfgang, Carvelli, Valter, Illikainen, Mirja, Kinnunen, Paivo

“…The role of organic ligands on the formation of hydrated magnesium carbonates (HMCs) has been remaining unclear. This work reports insights into the effects of…”
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Influence of sodium silicate powder silica modulus for mechanical and chemical properties of dry-mix alkali-activated slag mortar by Luukkonen, Tero, Sreenivasan, Harisankar, Abdollahnejad, Zahra, Yliniemi, Juho, Kantola, Anu, Telkki, Ville-Veikko, Kinnunen, Paivo, Illikainen, Mirja

“…[Display omitted] •Low SiO2/Na2O solid sodium silicate contains more Q1 and Q2 Si environments.•Low Si polymerization required for dry activator in one-part…”
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High strength one-part alkali-activated slag blends designed by particle packing optimization by Perumal, Priyadharshini, Sreenivasan, Harisankar, Luukkonen, Tero, Kantola, Anu M., Telkki, Ville-Veikko, Kinnunen, Paivo, Illikainen, Mirja

“…[Display omitted] •One-part alkali activated binary and ternary mortar blends are designed by optimizing the particle packing.•Distribution modulus to be…”
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Longitudinal single-sided NMR study: Silica-to-alumina ratio changes the reaction mechanism of geopolymer by Li, Jing, Mailhiot, Sarah, Kantola, Anu M., Niu, He, Sreenivasan, Harisankar, Telkki, Ville-Veikko, Kinnunen, Paivo

“…Characterizing and understanding the mechanisms underlying geopolymerization are critical in achieving the use of sustainable construction material,…”
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A critical review of magnesium silicate hydrate (M-S-H) phases for binder applications by Sreenivasan, Harisankar, Bernard, Ellina, Santos, Hellen S., Nguyen, Hoang, Moukannaa, Samira, Adediran, Adeolu, Provis, John L., Kinnunen, Paivo

“…Hydrated magnesium silicate materials are promising binding materials for applications as alternative cementitious materials and may offer a lower carbon…”
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On the hydration of synthetic aluminosilicate glass as a sole cement precursor by Alzeer, Mohammad I.M., Nguyen, Hoang, Fabritius, Tapio, Sreenivasan, Harisankar, Telkki, Ville-Veikko, Kantola, Anu M., Cheeseman, Christopher, Illikainen, Mirja, Kinnunen, Paivo

“…This paper reports on the synthesis and characteristics of a novel aluminosilicate glass-based cementitious binder. We investigated the hydration kinetics,…”
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Preparation and characterization of binary Mg-silicate glasses via Sol-Gel route by Jiang, Chuqing, Ramteke, D.D., Li, Jing, Sliz, Rafal, Sreenivasan, Harisankar, Cheeseman, Christopher, Kinnunen, Paivo

“…Sol-gel processing allows synthesis of low-energy glasses. In this work, binary magnesium silicate glasses with various MgO contents are synthesized using a…”
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129Xe NMR analysis reveals efficient gas transport between inborn micro-, meso- and macropores in geopolymers by Li, Jing, Mailhiot, Sarah, Sreenivasan, Harisankar, Kantola, Anu M., Telkki, Ville-Veikko, Kinnunen, Paivo

“…Geopolymers are alumino-silicates with inborn mesoporous structures. For construction applications, the knowledge on the porous structure and fluid dynamics is…”
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Modified geopolymers as promising catalyst supports for abatement of dichloromethane by Seelam, Prem Kumar, Sreenivasan, Harisankar, Ojala, Satu, Pitkäaho, Satu, Laitinen, Tiina, Niu, He, Keiski, Riitta L., Illikainen, Mirja

“…Geopolymers have not been extensively employed as catalytic materials despite of their zeolite-resembling Si–Al structure. Geopolymerization offers a novel way…”
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Ettringite-based binder from ladle slag and gypsum – The effect of citric acid on fresh and hardened state properties by Nguyen, Hoang, Kinnunen, Paivo, Gijbels, Katrijn, Carvelli, Valter, Sreenivasan, Harisankar, Kantola, Anu M., Telkki, Ville-Veikko, Schroeyers, Wouter, Illikainen, Mirja

“…The retardant effects of citric acid on the properties of ettringite binders are not yet fully understood. This investigation provides insights into the…”
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Ladle slag cement – Characterization of hydration and conversion by Adesanya, Elijah, Sreenivasan, Harisankar, Kantola, Anu M., Telkki, Ville-Veikko, Ohenoja, Katja, Kinnunen, Paivo, Illikainen, Mirja

“…[Display omitted] •The major hydrating phase in ladle slag is dodecacalcium hepta-aluminate (Mayenite/C12A7).•Hydration products convert from metastable…”
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