Results 41 to 50 of about 72,890 (243)

Life Cycle Assessment of Foam Concrete Production in Latvia

Environmental and Climate Technologies, 2019
Global warming being increasingly discussed, solutions for reducing emission greenhouse gases become more important in all industry sectors. The total energy consumed in the construction sector contribute up to 1/3 from all greenhouse gases emissions ...
Zimele Zinta, Sinka Maris, Korjakins Aleksandrs, Bajare Diana, Sahmenko Genadijs   +4 more
doaj   +1 more source

Algebraic description of spacetime foam [PDF]

, 2001
A mathematical formalism for treating spacetime topology as a quantum observable is provided. We describe spacetime foam entirely in algebraic terms.
Aleksandrov P S, Baehr H C, Baehr H C, Baugh J, Breslav R B, Breslav R B, Breslav R B, Butterfield J, Butterfield J, Crane L Clock, Eilenberg S, Einstein A, Einstein A, Einstein A, Feynman R P, Finkelstein D, Finkelstein D, Heisenberg W, Heisenberg W, Isham C J, Isham C J, Landi G, Landi G, Mallios A, Mallios A, Mallios A, Mallios A, Mulvey C, Mulvey C, Penrose R, Raptis I, Raptis I, Raptis I, Regge T, Rideout D P, Robb A A, Rota G-C, Sorkin R D, Sorkin R D, Sorkin R D, Sorkin R D, Sorkin R D, Stanley R P, Torretti R, Wheeler J A, Zapatrin R R, Zapatrin R R, Zapatrin R R, Zapatrin R R, Zapatrin R R, Zeeman E C   +50 more
core   +4 more sources

Beautoklavio putbetonio šiluminių techninių savybių tyrimai/Investigation into non-autoclaved foam concrete heat engineering properties

Journal of Civil Engineering and Management, 1996
The purpose of this investigation was to determine various density foam concrete heat engineering properties. These properties are not included in valid construction standards [1]. Thermal conductivity of samples was determined at 25°C according to [2]
Ivan Gnip, Vladislovas Keršulis, Antanas Laukaitis   +2 more
doaj   +1 more source

Sterile effect in foam concrete [PDF]

MATEC Web of Conferences, 2018
The paper considers the effect of a foaming agent and the steric effect initiated by it on the strength of a cement matrix and foam concrete under the classical technology of producing heat insulating cellular concrete of non-autoclaved hardening.
Gorbach Pavel, Shcherbin Sergey, Savenkov Andrei   +2 more
openaire   +2 more sources

Upcycling of Disposable Face Masks into Water‐Resistant and Flame Retardant Foams

Advanced Functional Materials, EarlyView.
Disposable mask waste is upcycled into lightweight polypropylene‐based foams with tunable porosity and composite architectures reinforced by ear‐loop fibers. The sustainable solvent‐based process enables upcycling rates of 91% and solvent recovery of >90%.
Jingjing Pan, Erlantz Lizundia, Hao Jia, Lennart Bergström   +3 more
wiley   +1 more source

Preparation and Performance Characterization of Low-Density 3D-Printed Expanded Perlite–Foam Concrete

Applied Sciences
Traditional lightweight foam concrete typically introduces a large number of voids into the concrete using surfactants to reduce density. However, in 3D printing, the instability of lightweight foam concrete can affect the workability of the slurry ...
Shangjin Jiang, Yuntao Wang, Sudong Hua, Hongfei Yue, Yanan Zhang   +4 more
doaj   +1 more source

Structural and heat-insulating foam concrete for individual monolithic housing construction [PDF]

Нанотехнологии в строительстве
Introduction. The article presents the results of studies of structural and heat-insulating cement-based foam concrete for monolithic individual housing construction using porous aggregates sand and superplasticizers.
Aleksei B. Steshenko, Aleksander I. Kudyakov, Alexandr S. Inozemtcev, Sergei S. Inozemtcev   +3 more
doaj   +1 more source

3D PRINTING OF FOAMED CONCRETE

Global Journal of Science & Engineering, 2020
This paper discusses the needs for 3D printing in comparison to conventional construction and proposes foamed concrete material for printing. Example of 3D printing projects under study to overcome housing crisis are presented. Stability and sufficient strength and structural integrity are the main parameters to look for when looking of printable ...
Rabab Allouzi, Amer Alkloub
openaire   +1 more source

Anti‐Slip Material‐Based Strategies and Approaches

Advanced Materials Technologies, EarlyView.
This review highlights the principle mechanisms of slipping at the microscale, linking contact mechanics with a friction behavior model for surface interfaces. Main strategies to develop anti‐slip properties to the surfaces are discussed alongside standardized testing approaches.
Sogand Abbaspoor‐Zanjani, Carlo Antonini, Teresa Gatti, Mengjiao Wang   +3 more
wiley   +1 more source

The study of cellular concrete porosity [PDF]

, 2017
The unique thermal properties of cellular concrete based materials is related to their porosity. The process of predetermined foam concrete structure formation is considered to be a crucial issue from the point of process control and it is currently ...
Конушева, В. В., Стешенко, А. Б., Сыркин, О. О.   +2 more
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