Results 131 to 140 of about 503,498 (378)

The Hieroglyphic Stairway of Copan, Honduras: Study Results and Conservation Proposals [PDF]

open access: yes, 2006
Summarizes historic research and scientific studies on the stone and mortar materials, biological colonization, condition, and environment of the stairway.

core  

Rheological and Interaction Analysis of Asphalt Binder, Mastic and Mortar

open access: yesMaterials, 2019
This paper investigated the rheological properties of asphalt binder, asphalt mastic and asphalt mortar and the interaction between asphalt binder, mineral filler and fine aggregates. Asphalt binder, mastic and mortar can be regarded as the binding phase
Meng Chen   +6 more
semanticscholar   +1 more source

Valence and Site Engineering Enable Efficient Broadband Near‐Infrared Emission at 960 nm in Cr3+‐Activated Forsterite

open access: yesAdvanced Materials, EarlyView.
This study reports a near‐infrared (NIR) luminescent material (Mg2SiO4:1.5%Cr,5%Li) with efficient (EQE = 48%) ultra‐broadband (FWHM ≈ 2413 cm−1 (226 nm)) NIR emission at 960 nm upon blue‐light excitation. This innovation addresses the low efficiency of long‐wavelength (λmax > 900 nm) NIR‐emitting materials due to the radiationless de‐activation and ...
Lei Zhong   +11 more
wiley   +1 more source

Grout or mortar removal by lasers [PDF]

open access: yes, 1997
The method comprises the steps of directing the beam of a portable laser device (40) onto grout (14) at a power level to cause removal of the grout; causing mutual relative movement between said laser beam and said grout; and, providing removal means (30,
Lawrence, Jonathan   +2 more
core  

Uniaxial Compression Behavior of Cement Mortar and Its Damage-Constitutive Model Based on Energy Theory

open access: yesMaterials, 2019
The mechanical properties of mortar materials in construction are influenced both by their own proportions and external loads. The trend of the stress–strain curve in cracks compaction stage has great influence on the relationship between the strength ...
Yunliang Tan   +5 more
semanticscholar   +1 more source

Mortar Kidney

open access: yesInternal Medicine, 2021
Hagiya, Hideharu   +3 more
openaire   +3 more sources

Photocatalytic Aqueous Reforming of Methyl Formate

open access: yesAdvanced Materials, EarlyView.
A 3d‐metal Cu‐based atomically dispersed photocatalyst, supported on modified g‐C₃N₄, facilitates the photocatalytic selective hydrogen (7.5 mmol gcat−1 of hydrogen; nothing else than H2 and CO2) generation from methyl formate. This diverse system functions under mild conditions, providing high hydrogen yield, selectivity, and enduring stability ...
Dongxu Zuo   +13 more
wiley   +1 more source

Mechanical properties and microstructure of pre-treated luffa fiber reinforced cement mortar.

open access: yesPLoS ONE
In this work, leveraging the enhanced wear resistance, toughness, and renewability of luffa fiber, pretreated luffa fiber was applied into cement mortar to investigate the impact of different fiber contents and sizes on mortar performance. Meanwhile, the
Renqiang Yang   +3 more
doaj   +1 more source

A new mortar from a strange ancient mortar

open access: yes, 2019
During the restoration of Perseus, a sculptural complex realized by G. B. Pieratti in the XVII century sited in Boboli Garden (Florence), an ancient mortar used as glue of iron pivots with very particular characteristics was found. Indeed this mortar was made of a magnesium hydroxide based binder (brucite) and barite (barium sulphate) as aggregate ...
Fratini F   +5 more
openaire   +3 more sources

Chemical Intercalant Affects the Structural Properties and Aqueous Stability of V2CTx MXene

open access: yesAdvanced Materials Interfaces, EarlyView.
Vanadium carbide (V2CTx) MXene dispersions and films were synthesized using four commonly used tetraalkylammonium hydroxide intercalating agents of varying alkyl chain length. The corresponding effects of MXene structure d‐spacing, flake size and morphology, and vanadium dissolution from MXene thin films were systematically investigated to better ...
Reagan A. Beers   +2 more
wiley   +1 more source

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