Results 101 to 110 of about 2,147 (208)

Kinetic modeling of solid-gas reactions at reactor scale: A general approach [PDF]

open access: yes, 2013
International audienceA rigorous simulation of industrial reactors in the case of solid-gas reacting systems is a complicated task due to several difficulties linked to the kinetic problem at the scale of the solid grains and to the problem of gas and ...
Favergeon, LoÏc   +3 more
core   +1 more source

Concrete with the lowered shrinkage and creep [PDF]

open access: yesСтроительство уникальных зданий и сооружений, 2014
The properties of monolithic structures concrete that determine its fracture durability take on special significance in high-rise building. This paper presents the results of designing the concrete with the specified limit values of shrinkage and creep ...
Yuri Germanovich Barabanshchicov   +2 more
doaj  

Structural and electrical properties of geopolymer materials based on different precursors (kaolin, bentonite and diatomite)

open access: yesMacedonian Journal of Chemistry and Chemical Engineering, 2019
Geopolymers (GP) were successfully synthesized from metabentonite (MB), metadiatomite (MD) and metakaolinite (MK). Characterization of their phase structure and microstructure was performed by XRD, FTIR, SEM/EDX methods.
Ljiljana M Kljajević   +6 more
doaj   +1 more source

Physical and mechanical properties of composites based on hemp shives and lime

open access: yesE3S Web of Conferences, 2018
One of the objectives of sustainable development in construction is the use of low-processed materials. They have a positive impact on the ecological balance of the building throughout the entire life cycle.
Brzyski Przemysław, Łagód Grzegorz
doaj   +1 more source

The evaluation of geopolymer properties prepared by alkali activation of black coal ashes with high content of loss on ignition [PDF]

open access: yes, 2010
The utilization of fly ashes in Slovakia is lower than in other countries and dumping of fly ashes prevails. The dumping changeschemical and phase composition of fly ashes and so it decreases possibilities for their utilization. Fly ashes are mainly used
Kolesárová Miroslava   +4 more
core  

Phase transformations in xerogels of mullite composition [PDF]

open access: yes
Monophasic and diphasic xerogels have been prepared as precursors for mullite (3Al2O3-2SiO2). Monophasic xerogel was synthesized from tetraethyl orthosilicate and aluminum nitrate nanohydrate and the diphasic xerogel from colloidal suspension of silica ...
Bansal, Narottam P., Hyatt, Mark J.
core   +1 more source

Ligantes obtidos por activação alcalina de lamas residuais das Minas da Panasqueira: resistência ao desgaste e ao ataque de soluções ácidas [PDF]

open access: yes, 2008
Este artigo apresenta alguns resultados sobre resistência ao desgaste e ao ataque em meio ácido de argamassas obtidas por activação alcalina de lamas residuais das Minas da Panasqueira (AALRM).
Gomes, J. P. Castro   +2 more
core  

Effect of crystallization time on the hydrothermal synthesis of zeolites from kaolin and bauxite [PDF]

open access: yes, 2014
Kaolin and bauxite were used as alumina and silica sources to synthesize zeolites hydrothermally. The source mate-rials as well as the synthesized zeolites were characterized by X-ray diffraction (XRD) scanning electron microscopy (SEM), en-ergy ...
Buamah, R   +4 more
core   +1 more source

Thermal behavior (TG-DTA-TMA), sintering and properties of a kaolinitic clay from Buenos Aires Province, Argentina

open access: yesCerâmica
The technological properties of a local kaolin, considered as a potential industrial material, were correlated with the thermal behavior and sintering processes carried out through a series of thermochemical analyses.
M. S. Conconi   +5 more
doaj   +1 more source

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