Results 71 to 80 of about 62,320 (296)

Concentrated Seawater‐Assisted Greener Production of Biochar: Waste Valorization and Its Implication in Circular Economy

open access: yesCleanMat, EarlyView.
This work demonstrates upcycling of waste biomass together with waste brine water to functional biochar materials with applications in both supercapacitors and adsorbent materials. This approach aligns with the principles of the circular economy, where waste streams are transformed into valuable resources, contributing to a more sustainable and ...
Fang Yu   +7 more
wiley   +1 more source

Sedimentary Mercury Enrichments as a Tracer of Large Igneous Province Volcanism

open access: yesGeophysical Monograph Series, Page 247-262., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Lawrence M. E. Percival   +3 more
wiley  

+4 more sources

Comparative Toxicity of Fly Ash: An In Vitro Study

open access: yesMolecules, 2021
Fly ash produced during coal combustion is one of the major sources of air and water pollution, but the data on the impact of micrometer-size fly ash particles on human cells is still incomplete. Fly ash samples were collected from several electric power
Elvira Rozhina   +8 more
doaj   +1 more source

Optimization of Magnesium Potassium Phosphate Cements Using Ultrafine Fly Ash and Fly Ash

open access: yesACS Sustainable Chemistry & Engineering, 2023
The effect of ultrafine fly ash (UFA) and fly ash (FA) on the physical properties, phase assemblage, and microstructure of magnesium potassium phosphate cement (MKPC) was investigated. This study revealed that the UFA addition does not affect the calorimetry hydration peak associated with MKPC formation when normalized to the reactive components (MgO ...
Tan, Y.   +7 more
openaire   +3 more sources

Temperature‐dependent shear behavior and constitutive model of the rock–concrete interface

open access: yesDeep Underground Science and Engineering, EarlyView.
Shear tests were conducted to investigate the temperature‐dependent shear behavior of the rock–concrete interface, highlighting the interaction between the surrounding rock and the lining during tunnel fires. Under experimental conditions, concrete exhibited greater temperature sensitivity than rock, with the shear fracture surface transitioning from ...
Hongbin Chen   +6 more
wiley   +1 more source

Effect of Fly Ash on Geotechnical Properties of Expansive soil

open access: yesJournal of Engineering and Sustainable Development, 2012
This paper investigated the effect of fly ash addition on geotechnical properties of expansive soil. Classification tests, consistency limits test, specific gravity test, compaction test, direct shear test, swell percentage, and swell pressure tests ...
Hayder A. Hasan
doaj  

The Mechanical Activation of Fly Ash

open access: yesProcedia Engineering, 2013
AbstractOne of the main options in looking for the new building materials is using of wastes from an industry as a replacement of the existing ingredient. This way is used in the concrete production too. Basic effort is to find a suitable replacement for economically and ecologically unfavorable cement by another component or components.
Hela, Rudolf, Jančaříková, Denisa
openaire   +2 more sources

Carbon emission assessment of tunnel infrastructures: From construction to operation

open access: yesDeep Underground Science and Engineering, EarlyView.
This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long   +4 more
wiley   +1 more source

FTIR spectroscopic investigation of alkali-activated fly ash: Atest study

open access: yesZaštita Materijala, 2018
Fly ash is byproduct of thermal power plants. Millions tons of fly ash is produced globally. Fly ash is disposed partly in landfills but it could also be released into the atmosphere in the past.
Armand Çomo, Fatos Ylli
doaj   +1 more source

Cementing Efficiency of Low Calcium Fly Ash in Fly Ash Concretes

open access: yes, 2013
{"references": ["V. M. Malhotra, \"CANMET Investigations dealing with high volume fly ash concrete\", Advances in Concrete Technology, Canada Communication Group Publishing Co., Otowa,Canada,1992, pp 443-470", "R. H. Elmuth. \"Fly ash in Cement and Concrete\", Portland cement Association, 1987.", "I. A.
T. D. Gunneswara Rao, Mudimby Andal
openaire   +1 more source

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