Results 81 to 90 of about 24,154 (189)

Influence of Early Microwave Curing on Performance of Slag-Based Geopolymer Mortars

open access: yesJournal of Sustainable Construction Materials and Technologies
In this article, an experimental study was conducted to examine the effect of curing time and microwave power on the compressive strength of early microwave-cured slag based geopolymers.
Ahmet Tasdemir, Abdulkadir Çevik
doaj   +1 more source

Development of Fly Ash-Based Geopolymer Lightweight Aggregates

open access: yesJournal of Engineering and Sustainable Development
This research delves into the utilization of microwave hybrid heating as a curing technique for producing fine aggregates from fly ash. Various concentrations of alkali activator solutions were employed as binders to pelletize the fly ash (ranging from ...
Ahmed Graytee, Hayder Mehdi
doaj   +1 more source

Microwave-assisted 3D printing of epoxy resin ink using rectangular waveguide

open access: yesVirtual and Physical Prototyping
Direct ink writing of thermosetting materials, e.g. epoxy resin, is a promising technique for the rapid and low-cost fabrication of high-strength parts with complex geometry. In this study, a microwave-assisted 3D printer using rectangular waveguide (RWG)
Zhe Zhang   +3 more
doaj   +1 more source

Prism coupling measurement of benzocyclobutene (BCB 4024-40) polymer for optical devices application [PDF]

open access: yes, 2006
Prism coupling method is employed in the characterization process of BenzoCyclobutene (BCB 4024-40) polymer slab structure. This method is used to characterize the polymer refractive index, variation of film thickness with spin coating speed and average ...
Ibrahim, Mohd. Haniff   +3 more
core  

Dependence of microwave absorption properties on ferrite volume fraction in MnZn ferrite/rubber radar absorbing materials

open access: yes, 2011
We report the analysis of measurements of the complex magnetic permeability ($\mu_r$) and dielectric permittivity ($\epsilon_r$) spectra of a rubber radar absorbing material (RAM) with various MnZn ferrite volume fractions.
Dantas, Christine C.   +2 more
core   +1 more source

Materials and Mix Optimization Procedures for PCC Pavements;TR-484, March 2006 [PDF]

open access: yes, 2006
Severe environmental conditions, coupled with the routine use of deicing chemicals and increasing traffic volume, tend to place extreme demands on portland cement concrete (PCC) pavements.

core  

Conductive lithographic films [PDF]

open access: yes
This paper reports progress in the development of a novel fabrication technique for printing circuit board designs directly onto suitable substrates. Circuit tracks can be formed on organic or synthetic substrates by depositing films of a metal-loaded ...
Evans, PSA, Harrison, DJ, Ramsey, BJ
core   +1 more source

Dimensional stability of distances between teeth in complete dentures comparing microwave polymerization and conventional cycles

open access: yesBrazilian Journal of Oral Sciences, 2015
Aim: This study investigated the tooth movement of complete dentures processed by microwave activation and conventional processing method in water bath.
Wagner Araújo de Negreiros   +2 more
doaj   +1 more source

Development of fire-resistant, low smoke generating, thermally stable end items for commercial aircraft and spacecraft using a basic polyimide resin [PDF]

open access: yes
A terpolyimide precursor was developed which can be foamed by microwave methods and yields foams possessing the best seating properties. A continuous process, based on spray drying techniques, permits production of polyimide powder precursors in large ...
Gagliani, J.   +3 more
core   +1 more source

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