Results 81 to 90 of about 1,008,877 (311)

valuation of Mix Proportions and Mechanical Properties of Normal and High-Strength Fibers Concrete

open access: yesPolytechnic Journal, 2019
An experimental program is carried out to evaluate the mix design and mechanical properties of normal strength concrete (NSC) grade 40 MPa and high-strength concrete grade 60 and 80 MPa.
Imad R. Mustafa, Omar Q. Aziz
doaj   +1 more source

Spatial description of concrete characteristics [PDF]

open access: yes, 2016
This work has the objective to simulate the variation of the compressive resistance strength of concrete along the height of a structural member. The concrete compressive strength is calculated with a formula, which has been previously analysed.
Sánchez Salomó, Francesc Xavier
core  

Liquids as Reinforcements for Anisotropic and Tough Soft Matter Composites

open access: yesAdvanced Materials, EarlyView.
Liquid metal droplets are shaped and oriented within soft elastomers to create all‐soft matter composites with programmable mechanical anisotropy. These liquid inclusions act as fiber‐like reinforcements, enabling directional stiffness, enhanced toughness, and controlled crack steering under extreme deformation, offering new routes to resilient soft ...
Gwyneth M. Schloer   +5 more
wiley   +1 more source

Workability, compressive strength and initial surface absorption of laterized concrete [PDF]

open access: yes, 2019
This paper investigated the workability, compressive strength and initial surface absorption of plasticised laterized concrete at the water/cement ratios of 0.30, 0.50 and 0.70.
FOLAGBADE, Samuel Olufemi   +1 more
core  

Intrinsic Coordination Architecture Governing Selectivity Divergence Between Extended and Single‐Site Electrocatalysts

open access: yesAdvanced Materials, EarlyView.
Catalyst coordination acts as a loaded dice biasing reaction selectivity. Single‐atom site catalysts lock intermediates in exposed configurations, enabling continued hydrogenation and favoring oxygen‐retaining products. In contrast, extended metal surfaces fully coordinate and shield reactive centers, promoting deoxygenation pathways. This work reveals
Chengyi Zhang, Ziyun Wang
wiley   +1 more source

Comparison of compressive strength in mud bricks with shred tires and concrete particles as sustainable materials [PDF]

open access: yes, 2010
Mud bricks consist of clay, water and different materials. Comparing mud bricks to concrete blocks, an evolution in reducing the cost and also in increasing the compressive strength, can be made.
Kassim, Khairul Anuar, Niroumand, Hamed
core  

Restrained Shrinkage of Fly Ash Based Geopolymer Concrete and Analysis of Long Term Shrinkage Prediction Models [PDF]

open access: yes, 2017
The research presented in this manuscript describes the procedure to quantify the restrained shrinkage of geopolymer concrete (GPC) using ring specimen. Massive concrete structures are susceptible to shrinkage and thermal cracking.
Ahmed, Mahbub K   +3 more
core   +3 more sources

Cell Adhesion by Design: Engineering Tissue Culture Scaffolds With Adhesion Cues

open access: yesAdvanced Materials Interfaces, EarlyView.
ABSTRACT In scaffold‐based tissue engineering, the matrix should provide adequate adhesion cues for cell attachment, spreading, and function. Given the multitude of adhesion receptors and the diversity of scaffolds, there are many approaches to render scaffolds adhesive, even though they are not all equivalent.
Dalia Dranseike   +3 more
wiley   +1 more source

Experimental study on mechanical properties of basalt fiber reinforced nano-SiO2 concrete after high temperature

open access: yesFrontiers in Materials
In enhancing the high-temperature resistance of concrete, incorporating fiber materials was established as an effective approach. This study focused on evaluating the cubic compressive strength, splitting tensile strength, prism compressive strength, and
Weidong Yang, Huaxin Liu, Hesong Wang
doaj   +1 more source

Combined effects on residual strength of a high performance concrete exposed to fire [PDF]

open access: yes, 2017
Concrete structures exposed to fire suffer from damage, but can remain a certain degree of residual strength. International research has shown that the compressive strength of concrete decreases not only with temperature, but also by the way of cooling ...
Annerel, Emmanuel, Taerwe, Luc
core  

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