Results 1 to 10 of about 737,170 (252)

Investigation of the physical and mechanical properties and durability of pervious concrete: a review [PDF]

open access: yesArchives of Civil Engineering, 2022
In recent years, the application of pervious concrete (PC) in urban areas has expanded mainly due to its high potential for controlling and guiding surface waters and floods.
Makan Pedram   +2 more
doaj   +1 more source

Porosity in minerals

open access: yesAIMS Materials Science, 2022
Minerals typically form porous assemblies with porosity extending from a few percent to ca. 35% in porous sandstones, and over 50% in tuff, clays, and tuff. While transport of gases and liquids are widely researched in these materials, much less is known
Ekhard K.H. Salje
doaj   +1 more source

Analysis of Free Vibration of Porous Power-law and Sigmoid Functionally Graded Sandwich Plates by the R-functions Method [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2023
Investigation of free vibration of porous power and sigmoid-law sandwich functionally graded (FG) plates with different boundary conditions is presented in this paper. The FG sandwich plate includes three layers.
Lidiya Kurpa   +4 more
doaj   +1 more source

Porosity,  -porosity and measures [PDF]

open access: yesNonlinearity, 2002
We show that given a σ-finite Borel regular measure μ in a metric space X, every σ-porous subset of X of finite measure can be approximated by strongly porous sets. It follows that every σ-porous set is the union of a σ-strongly porous set and a μ-null set.
Mera Rivas, María Eugenia   +3 more
openaire   +3 more sources

Research on creep characteristics and pore structure evolution characteristics of freezing-thawing rocks

open access: yesShuiwen dizhi gongcheng dizhi, 2023
The rock mass of open pit in cold regions is often affected by freezing-thawing cycles and long-term loads. In order to explore the influence of cold region environment on the stability of rock mass, the red sandstone of a project in northern Shaanxi is ...
Yongjun SONG   +4 more
doaj   +1 more source

Influence of the phase composition of refractory materials on creep [PDF]

open access: yesScience of Sintering, 2006
In this paper, the relationship between the creeping effect and mineralogical characteristics of the applied binding phase for various refractory materials (high-alumina materials, with high or low impurity content, tar bonded either magnesite or ...
Terzić A.   +2 more
doaj   +1 more source

Constraints on porosity and mass loss in O-star winds from modeling of X-ray emission line profile shapes [PDF]

open access: yes, 2013
We fit X-ray emission line profiles in high resolution XMM-Newton and Chandra grating spectra of the early O supergiant Zeta Pup with models that include the effects of porosity in the stellar wind.
Cohen, David H.   +3 more
core   +4 more sources

Evaluation of Approaches of Numerical Modelling of Solidification of Continuously Cast Steel Billets [PDF]

open access: yesArchives of Metallurgy and Materials, 2018
The paper evaluates two approaches of numerical modelling of solidification of continuously cast steel billets by finite element method, namely by the numerical modelling under the Steady-State Thermal Conditions, and by the numerical modelling with the ...
M. Tkadlečková   +6 more
doaj   +1 more source

Impact of high volume E.M.D. residue on the corrosion resistance and mechanical properties of construction materials in sulfate environment

open access: yesMaterials Research Express, 2023
This study examines the potential use of Electrolytic Manganese Dioxide (EMD) residue as a replacement of cement (20%wt by cement weight) in construction materials to provide anticorrosion protection on reinforcing steel and improve the strength of ...
Nikolaos Chousidis   +2 more
doaj   +1 more source

Study on characterization technology of porosity and fractal dimension of micro-arc oxidation coating

open access: yesMaterials Research Express, 2023
The porosity of the micro-arc oxidation coating of pure titanium was assessed through the utilization of Mercury intrusion porosimetry (MIP). The porosity values were subsequently adjusted by accounting for the proportion of coating volume, resulting in ...
Xiao-Fei Wang   +6 more
doaj   +1 more source

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