microwave and conventional treatment of low cement high
Advances in Modern Cement and ConcreteNova Science
Wuhan Univ. J. Nat. Sci. 18 (6) 535–540. This book is for readers who want to become well-versed in the most important current research in the field of modern cement and concrete. The book will be useful for students researchers concrete scientists and technologists and practicing engineers.
Atraumatic restorative treatment versus conventional
For this comparison ART may reduce pain during procedure compared with conventional treatment (MD -0.65 95 CI -1.38 to 0.07 40 participants analysed low-quality evidence)Comparisons of ART to conventional treatment using composite or RM-GIC were downgraded to very low quality due to indirectness imprecision and high risk of performance
A Roadmap for Production of Cement and Concrete with Low
· A high substitution of cement clinker in low-CO 2 cements may result in a reduction of pH buffering capacity hence susceptibility to carbonation and corrosion of steel reinforcement. With careful mix design a more refined pore structure and associated lower permeability can still give a
Microwave Heating Characteristics of Emulsified Asphalt
· Notably microwave treatment of metal factory waste (such as steel slag and cooper slag) is very effective in asphalt mixture crack repair 13 14 . Furthermore the mixture heated by microwave has better high-temperature rutting resistance low-temperature crack resistance and water stability .
Resistance to acid and sulfate solutions of microwave
· In this paper 90-W microwave radiation for 5 min plus a shortened heat curing period was applied to cure the fresh geopolymer paste. Results showed that microwave radiation contributed to the dissolution of fly ash in the alkaline solution. Numerous gel formations were observed in microscopic scale. This resulted in a dense composite and strong bonding between the fly ash and the geopolymer
Can Microwaves Cause Cancer Verywell Health
· Microwave cooking prior to grilling may lower the concentration of carcinogens such as polycyclic aromatic hydrocarbons (PAHs) and heterocyclic amines which are chemicals formed when muscle meat including beef pork fish or poultry is cooked using high-temperature methods such as pan-frying or grilling directly over an open flame.
Permittivity of Portland cement concrete at low RF
· article osti_ title = Permittivity of Portland cement concrete at low RF frequencies author = Su W and Hazim O A and Al-Qadi I L and Riad S M and Al-Qadi I L abstractNote = Portland cement concrete (PCC) specimens were cast and most cured for 28 days. Their complex permittivity was measure dover a frequency ranger of 100 kHz--40 MHz as part of an
Studies on thermo-chemical treatment of recycled concrete
· The presence of cement paste is the most important factor affecting the quality of recycled concrete fine aggregates. This study aims to develop the thermo-chemical treatment for the purpose of removal of the cement paste adhering to recycled concrete fine aggregates. This study involves assessing the effectiveness of thermo-chemical treatment and comparing its efficiency with thermal
(PDF) Applications of microwave energy in cement and
Microwave heating is a highly efficient technique for various thermal processes. Advantages of microwave heating compared to conventional processing methods include energy-saving rapid heating rates and short processing times deep penetration of the Applications of microwave energy in cement and concreteA review. Download.
Effect of Microwave Heating on the Acrylamide Formation in
The published studies showed that microwave heating at a high power level can cause greater AA formation in products than conventional food heat treatment. The higher content of acrylamide in microwave-heated foods may be due to differences in its formation during microwave heating and conventional methods. At the same time short exposure to
Conventional- vs microwave-hydrothermal synthesis of tin
· The double-walled digestion vessel has an inner liner and a cover made up of Teflon ® PFA and an outer high-strength shell of Ultem polyetherimide. After sealing the vessels were heated in a microwave digestion system MARS-5 (CEM Corp.) in the temperature range of 100–200 °C for 0.5–4 h using a 300-W power. Temperature feedback control is achieved with a microwave transparent fiber
Cited by 59
Microwave and conventional treatment of low-cement high
Abstract The aim of this study was to determine the effect of the microwave and conventional drying method on the strength porosity and composition of low-cement alumina castables with various water to cement ratios (wcr). High-alumina low-cement castable samples were prepared with different w/c ratios 0.64 0.75 0.82 and 1.13.
A Roadmap for Production of Cement and Concrete with Low
· A high substitution of cement clinker in low-CO 2 cements may result in a reduction of pH buffering capacity hence susceptibility to carbonation and corrosion of steel reinforcement. With careful mix design a more refined pore structure and associated lower permeability can still give a
Development of an Efficient Microwave System for Material
h2020 destiny ce-spire vdeh-betriebsforschungsinstitut (de) innceinnmat sl(es) cemex innovation holding ag(ch) pno innovation sl(es) national technical university of athensntua(el) chumillas technology sociedad limitada(es) cemex research group ag(ch) al farben sa(es) k1-met (at) ciaotech srl(it) keraben grupo sa(es) belgisch laboratorium van de elektriciteitsindustrie
Permittivity of Portland cement concrete at low RF
· article osti_ title = Permittivity of Portland cement concrete at low RF frequencies author = Su W and Hazim O A and Al-Qadi I L and Riad S M and Al-Qadi I L abstractNote = Portland cement concrete (PCC) specimens were cast and most cured for 28 days. Their complex permittivity was measure dover a frequency ranger of 100 kHz--40 MHz as part of an
Effect of Microwave Heating on the Acrylamide Formation in
The published studies showed that microwave heating at a high power level can cause greater AA formation in products than conventional food heat treatment. The higher content of acrylamide in microwave-heated foods may be due to differences in its formation during microwave heating and conventional methods. At the same time short exposure to
Atraumatic restorative treatment versus conventional
For this comparison ART may reduce pain during procedure compared with conventional treatment (MD -0.65 95 CI -1.38 to 0.07 40 participants analysed low-quality evidence)Comparisons of ART to conventional treatment using composite or RM-GIC were downgraded to very low quality due to indirectness imprecision and high risk of performance
Production of high-early-compressive-strength Portland
· The use of low-pressure microwave (MW)–accelerated heating and curing in the production of high-early-strength Portland cement paste (CP) in relation to the processing characteristics and factors affected is investigated. The effects of the pressure in the MW cavity the feed direction of the MW and the number of CP specimens per MW curing batch on the temperature increase and moisture
Environmentally Driven Geopolymer Cement Applications.
Conventional inorganic binders are also unsuited for solidification of end-product residues with high sulphide contents. These mineral and organo-metallic wastes generate sulphuric acid which leaches out heavy metals. Unlike conventional Portland cement geopolymeric cements do not rely on lime and are not dissolved by acidic solutions.
(PDF) Applications of microwave energy in cement and
Microwave heating is a highly efficient technique for various thermal processes. Advantages of microwave heating compared to conventional processing methods include energy-saving rapid heating rates and short processing times deep penetration of the Applications of microwave energy in cement and concreteA review. Download.
A Roadmap for Production of Cement and Concrete with Low
· A high substitution of cement clinker in low-CO 2 cements may result in a reduction of pH buffering capacity hence susceptibility to carbonation and corrosion of steel reinforcement. With careful mix design a more refined pore structure and associated lower permeability can still give a
Effect of low-pressure microwave-accelerated curing on the
· The effect of microwave-accelerated curing on the permeability and drying shrinkage of Portland cement pastes was analyzed. Microwave-based curing is one of the technologies recommended for improving the drying shrinkage and permeability of
Application of treatment and disposal methods 9
at high temperatures (>1200°C). Cement kilns are also particularly suited to the treatment of pharmaceuticals in many countries cement producers accept pharmaceutical waste as an alternative fuel thus reducing fuel costs. As a Òrule of thumbÓ however it is suggested that no more than 5 of the fuel fed into the furnace at any time is
Can Microwaves Cause Cancer Verywell Health
· Microwave cooking prior to grilling may lower the concentration of carcinogens such as polycyclic aromatic hydrocarbons (PAHs) and heterocyclic amines which are chemicals formed when muscle meat including beef pork fish or poultry is cooked using high-temperature methods such as pan-frying or grilling directly over an open flame.
Permittivity of Portland cement concrete at low RF
· article osti_ title = Permittivity of Portland cement concrete at low RF frequencies author = Su W and Hazim O A and Al-Qadi I L and Riad S M and Al-Qadi I L abstractNote = Portland cement concrete (PCC) specimens were cast and most cured for 28 days. Their complex permittivity was measure dover a frequency ranger of 100 kHz--40 MHz as part of an
Microwave Heating Characteristics of Emulsified Asphalt
· Notably microwave treatment of metal factory waste (such as steel slag and cooper slag) is very effective in asphalt mixture crack repair 13 14 . Furthermore the mixture heated by microwave has better high-temperature rutting resistance low-temperature crack resistance and water stability .
Microwave and conventional treatment of low-cement high
· Microwave drying can be successfully applied for the drying of low-cement refractory castables. It can be particularly useful for drying prefabricated elements. However conditions (power increase of power and time) must be selected according to their size.
Cited by 2
Sulfate attack in concreteunderstanding-cement
Sulfate attack in concrete and mortar. Sulfate attack can be external or internal . External due to penetration of sulfates in solution in groundwater for example into the concrete from outside. Internal due to a soluble source being incorporated into the concrete at the time of mixing gypsum in the aggregate for example. External sulfate attack
Atraumatic restorative treatment versus conventional
We judged all studies to be at high risk of bias.For the main comparison of ART compared to conventional treatment using the same material all but two studies used high-viscosity glass ionomer (H-GIC) as the restorative material one study used a composite material and one study used resin-modified glass ionomer cement (RM-GIC)).Compared to conventional treatment using H-GIC ART may
Production of high-early-compressive-strength Portland
· Production of high-early-compressive-strength Portland cement paste using low-pressure microwave-accelerated heating and curing processing characteristics and factors affected Natt Makul Department of Building Technology Faculty of Industrial Technology Phranakhon Rajabhat University 9 Changwattana Road Bangkhen Bangkok 10220 Thailand
Ceramics International Vol 44 Issue 1 Pages 1-1226
Microwave and conventional treatment of low-cement high-alumina castables with different water to cement ratios Part I. Drying Jerzy Czechowski Izabela Majchrowicz Pages 65-70
Decarbonizing the cementitious materials cycle A whole
· This challenge is technical for example due to the high energy and emissions intensities of the production processes and economic for example due to the globalized and relatively low-profit-margin nature of CM products (Bataille et al. 2018). Careful policy intervention is thus essential in decarbonizing the global cement industry and
Development of an Efficient Microwave System for Material
The DESTINY concept will be proved in two demo sites located in Spain and Germany covering high energy demanding sectors of strategic interest as Ceramic (Pigments) Cement (Calcined clay) and Steel (Sinter Iron Pellets/DRI ZnO) to validate the critical parameters of the developed technology in relevant environment (TRL 6).
A Roadmap for Production of Cement and Concrete with Low
· A high substitution of cement clinker in low-CO 2 cements may result in a reduction of pH buffering capacity hence susceptibility to carbonation and corrosion of steel reinforcement. With careful mix design a more refined pore structure and associated lower permeability can still give a
