Results 31 to 40 of about 4,938 (244)

Load-defl ection behaviour of hybrid concrete flat slab

open access: yesPrzegląd Naukowy Inżynieria i Kształtowanie Środowiska, 2019
Due to the important role of high strength concrete in the structural systems, present work focuses on the use of this material as a strengthening technique incorporating with the normal strength concrete in flat slab system.
Ragheed F. Makki   +2 more
doaj   +1 more source

EVALUATION OF FIRE ENDURANCE OF SELF COMPACTED CONCRETE SLAB REINFORCED WITH STEEL FIBER REINFORCEMENT AND STEEL BARS

open access: yesDiyala Journal of Engineering Sciences, 2012
The effect of steel fiber on the deflection of self- compacted slabs under fire (6000c) was investigated in this study. Three specimens were tested experimentally and numerically ( by using sophisticated finite element programme ANSYS 7.0) to determine ...
Zena Waleed Abass
doaj   +1 more source

Effect of Elevated Temperature on Punching Shear of Regular and Irregular Shaped Self-Compacted Concrete Slabs [PDF]

open access: yesEngineering and Technology Journal, 2010
The exposure of reinforced concrete slabs to high temperature causes changesin their structural behavior.This work aims to study the post-heating behavior of self compacted concrete(SCC) regular (square) and irregular (trapezoidal) shaped flat plates and
Luma Fadhil H
doaj   +1 more source

Circular Innovations in Complex Systems: A Blueprint of Four Design Archetypes

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Circular innovations (CI), defined as the redesign of products, services or practices to minimise waste, reduce resource use and regenerate natural systems, are essential for advancing the circular economy. Despite growing recognition, their deployment in systems of linked parts with unpredictable interactions (complex systems) remains limited
Sophie Führer   +2 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

Semi‐analytical solution for the stability of deep vertical shaft considering time‐dependent rock‐structure interaction

open access: yesDeep Underground Science and Engineering, EarlyView.
A novel cavity contraction solution and multilayer shaft wall model were developed to analyze deep shaft stability, considering rock viscosity, support structures, and water pressure, with successful validation through a Hulusu Coal Mine case study.
Bin Chen   +5 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

Analysis of deflections up to failure of composite steel fiberreinforced concrete slabs

open access: yesEngineering Structures and Technologies, 2010
Analysis of experimental and theoretical results of investigation into deflection of composite steel-concrete slabs is presented in the paper. Profiled steel sheeting (Holorib type) and steel fiber-reinforced concrete were used for specimens.
Mindaugas Petkevičius, Juozas Valivonis
doaj   +1 more source

Strengthening urban resilience in China through underground infrastructures management: Addressing global climate challenges with technological solutions

open access: yesDeep Underground Science and Engineering, EarlyView.
This paper explores how climate‐resilient technologies, such as smart grids, digital twins, and self‐healing materials, can enhance urban resilience. It highlights the urgent need for proactive planning, public‐private collaboration, and data‐driven innovation to future‐proof underground infrastructure amid accelerating climate and urban pressures ...
Kai Chen Goh   +12 more
wiley   +1 more source

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