Results 41 to 50 of about 86,967 (276)

Punching shear behavior of fiber reinforced polymers reinforced concrete flat slabs: experimental study

open access: yes, 2003
This paper presents the results of a two-phase experimental program investigating the punching shear behavior of fiber reinforced polymer reinforced concrete (FRP RC) flat slabs with and without carbon fiber reinforced polymer (CFRP) shear reinforcement.
El-Ghandour, A. W.   +2 more
core   +1 more source

Concrete spall damage of UHPC slabs under contact detonation - An experimental investigation [PDF]

open access: yes, 2015
Concrete spallation is a typical brittle damage mode under close-in or contact explosions. Upon concrete spallation, a large number of fragments displace from the concrete surface with high speed and these fragments endanger the personnel and equipment ...
Hao, Hong, Li, Jun, Wu, Chengqing
core   +1 more source

Anti‐Slip Material‐Based Strategies and Approaches

open access: yesAdvanced 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   +3 more
wiley   +1 more source

Thermal and strength performance of reinforced self-compacting concrete slabs mixed with basalt and PVA fibers in high intensity fire

open access: yesMATEC Web of Conferences, 2017
Fibers addition to concrete and the innovation of self-compacting concrete technology lead to the development of high-performance concrete. However, high intensity fire may adversely affect the performance of this type of concrete.
Mohd Jani Noraniza   +3 more
doaj   +1 more source

Enhancing the Punching Load Capacity of Reinforced Concrete Slabs Using an External Epoxy-Steel Wire Mesh Composite

open access: yesFibers, 2019
The present experimental work investigates the applicability and performance of a new strengthening method for concrete slabs, intended to increase their punching resistance using combination layers of steel wire mesh with epoxy attached to the concrete ...
Abdulkhaliq A. Jaafer   +2 more
doaj   +1 more source

Numerical modelling of two-way reinforced concrete slabs in fire [PDF]

open access: yes, 2004
This paper describes numerical modelling of the fire behaviour of two-way reinforced concrete slabs using a special purpose non-linear finite-element program, SAFIR.
Buchanan, Andrew   +3 more
core   +1 more source

Systematic Exploration of 3D Concrete Printing Parameters for Conformal Printing on Sloped Surfaces

open access: yesAdvanced Robotics Research, EarlyView.
A conformal slicing algorithm is developed for robotic 3D concrete printing (3DCP) on sloped surfaces as a first step toward printing slab‐on‐grade foundations on uneven terrain. Systematic experiments quantify the effects of nozzle speed, extrusion rate, and toolpath direction on filament dimension and stability.
Paniz Farrokhsiar   +2 more
wiley   +1 more source

Stabilization of Single Metal Atoms on Graphitic Carbon Nitride: Synthetic Strategies and Emerging Applications

open access: yesAdvanced Science, EarlyView.
This review highlights recent advancements in stabilizing single metal atoms on graphitic carbon nitride emphasizing innovative synthesis strategies and emerging applications in electrocatalysis, photocatalysis and organic transformations, along with key challenges and future perspective. Abstract Emerging as a new frontier in catalysis science, single‐
Wenyao Zhang   +6 more
wiley   +1 more source

Analysis of damage characteristics of reinforced concrete slabs under explosive impact and research on CFRP reinforcement

open access: yesFrontiers in Materials
To study the damage characteristics and damage model of reinforced concrete slabs under explosive impact, the failure modes of reinforced concrete slabs under near-field and contact explosion were first studied through on-site experiments.
Junxia Lian, Dongjie Li, Haonan Zhao
doaj   +1 more source

Maturity effects in concrete dams [PDF]

open access: yes, 2004
Model equations for determining the coupled heat, moisture and maturity changes within a concrete block are introduced and briefly examined. Preliminary results are obtained for the heat exchange between concrete slabs in contact driven by maturity ...
Ballim, Y   +4 more
core  

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