Impact loadinduced microstructural damage of concrete

Leave Comment

Impact load-induced microstructural damage of concrete ...

Findings from this study will lead to a better understanding of the impact load-induced micro-structural damage phenomena. In addition, the micro-structural data from SEM and X-ray CT obtained during impact and mechanical testing of the concrete mixtures could be used to develop a multi-scale finite element model to simulate and predict the behaviour and fracture damage of concrete subjected ...

Get price

Impact load-induced micro-structural damage and micro ...

01/02/2012  The behavior of concrete under impact loading is significantly different than that under static or seismic loads as concrete is a strain-rate sensitive material and its properties change with changes in the rate of loading , . Theoretically, the small cracks that lead to the non-linearity in the static case are pushed to propagate much more quickly under impact loading. Thus, cracks are prone ...

Get price

Erdem, Savas (2012) Impact load-induced microstructural ...

IMPACT LOAD-INDUCED MICROSTRUCTURAL DAMAGE OF CONCRETE MADE WITH UNCONVENTIONAL AGGREGATES Savaș Erdem Thesis submitted to the University of Nottingham for the degree of Doctor of Philosophy January 2012 . ii Abstract Understanding the correlation between the mix proportions, micro structural characteristics, and macro-scale properties of concrete (i.e. the

Get price

Impact load-induced microstructural damage of concrete ...

Request PDF Impact load-induced microstructural damage of concrete made with unconventional aggregates Understanding the correlation between the mix proportions, micro structural ...

Get price

Impact load-induced microstructural damage of concrete ...

Impact load-induced microstructural damage of concrete made with unconventional aggregates . By Savas Erdem. Abstract. Understanding the correlation between the mix proportions, micro structural characteristics, and macro-scale properties of concrete (i.e. the process-structure-properties relationship) is fundamental to achieving a more advanced understanding of how to apply and optimise this ...

Get price

Title: Impact load-induced microstructural damage of ...

Impact load-induced microstructural damage of concrete made with unconventional aggregates Author: Erdem, Savas ISNI: 0000 0004 ... This research was intended to make a quantitative assessment of impact load-induced micro-structural damage in concrete and, more particularly, to investigate the influence of ITZ micro-and nano local properties (as influenced by aggregate characteristics) on the ...

Get price

Impact load-induced microstructural damage of concrete ...

Request PDF Impact load-induced microstructural damage of concrete made with unconventional aggregates Understanding the correlation between the mix proportions, micro structural ...

Get price

Impact load-induced micro-structural damage and micro ...

15/02/2012  @article{osti_21596953, title = {Impact load-induced micro-structural damage and micro-structure associated mechanical response of concrete made with different surface roughness and porosity aggregates}, author = {Erdem, Savas and Dawson, Andrew Robert and Thom, Nicholas Howard}, abstractNote = {The relationship between the nature of micro damage under impact loading

Get price

Impact load-induced micro-structural damage and micro ...

Cement and Concrete Research Volume 42, Issue 2 , February 2012 , Pages 291-305 Impact load-induced micro-structural damage and micro-structure associated mechanical response of concrete made with different surface roughness and porosity aggregates

Get price

Impact load-induced micro-structural damage and micro ...

Impact load-induced micro-structural damage and micro-structure associated mechanical response of concrete made with different surface roughness and porosity aggregates .

Get price

Impact load-induced micro-structural damage and micro ...

Abstract The relationship between the nature of micro damage under impact loading and changes in mechanical behavior associated with different microstructures is studied for concretes made with two different coarse aggregates having significant differences mainly in roughness and porosity — sintered fly ash and uncrushed gravel. A range of techniques including X-ray diffraction, digital ...

Get price

Impact load-induced micro-structural damage and micro ...

21/02/2019  Impact load-induced micro-structural damage and micro-structure associated mechanical response of concrete made with different surface roughness and porosity

Get price

Impact load-induced micro-structural damage and micro ...

Impact load-induced micro-structural damage and micro-structure associated mechanical response of concrete made with different surface roughness and porosity aggregates Published in Cement and Concrete Research in 2012

Get price

Impact load-induced micro-structural damage and micro ...

Article “Impact load-induced micro-structural damage and micro-structure associated mechanical response of concrete made with different surface roughness and porosity aggregates” Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto stood alone to support the generation of ideas.

Get price

Microstructural damage evolution and its effect on ...

12/07/2018  Concrete structures in cold regions are exposed to cyclic freezing and thawing environment, leading to degraded mechanical and fracture properties of concrete due to microstructural damage. While the X-ray micro-/nano-computed tomography technology has been implemented to directly observe concrete microstructure and characterize local damage in recent years, the freeze-thawed damage

Get price

What is Impact load? and Impact stress Formula? - ExtruDesign

19/04/2018  Impact Stress Formula Derivation. l = Length of the bar. 𝛿 l = Deformation of the bar. E = Young’s modulus of the material of the bar. h = Height at which the load falls. A = Cross-sectional area of the bar. σ i = Impact Stress-induced in the bar due to the application of the impact load. P = Force at which the deflection is produced.

Get price

A Quantitative Investigation of the Effects of Load ...

A Quantitative Investigation of the Effects of Load Induced Thermal Strain on Concrete Microstructure. ... Therefore the presence of a specific microstructural damage mechanism which accounts for the development ofLITS is partly discounted in the pore structure range >0.02 μm in equivalent diameter considered here. However, an increase in the variability of mercury intrusion

Get price

Impact load-induced micro-structural damage and micro ...

Article “Impact load-induced micro-structural damage and micro-structure associated mechanical response of concrete made with different surface roughness and porosity aggregates” Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto stood alone to support the generation of ideas.

Get price

Microstructural damage evolution and its effect on ...

12/07/2018  Concrete structures in cold regions are exposed to cyclic freezing and thawing environment, leading to degraded mechanical and fracture properties of concrete due to microstructural damage. While the X-ray micro-/nano-computed tomography technology has been implemented to directly observe concrete microstructure and characterize local damage in recent years, the freeze-thawed damage

Get price

A Quantitative Investigation of the Effects of Load ...

A Quantitative Investigation of the Effects of Load Induced Thermal Strain on Concrete Microstructure

Get price

Microstructural damage evolution and its effect on ...

Concrete structures in cold regions are exposed to cyclic freezing and thawing environment, leading to degraded mechanical and fracture properties of concrete due to microstructural damage. While t...

Get price

Investigation of Microstructural Damage in Ultrahigh ...

05/04/2018  The damage process in normal concrete under freezing-thawing action has been widely studied, from the point of views of both microstructure and macroproperties [6–8]. Two types of damage, that is, surface scaling and internal cracking, would be induced when the concrete undergoes freezing-thawing cycles. In order to quantify these types of ...

Get price

Publications - The University of Nottingham

Microstructural characterisation of rubber modified asphalt mixtures: PhD: 2012: Keikhaei, Pejman : Enhancing pavements for thermal applications: PhD: 2012: Erdem, Savas: Impact load-induced micro structural damage of concrete with unconventional aggregates: PhD: 2012: Md. Yusoff, Nur Izzi: Modelling the linear viscoelastic rheological properties of bituminous binders: PhD: 2012: Mohd

Get price

INTRODUCTION TO IMPACT LOADING - PDHonline

items as bumpers where impact is a service condition and damage is to be prevented and not simply tolerated. DROPPED. MASS. Page 3 of 11. PDHcenter PDH Course S164 PDHonline. The energy balance approach is easy to extend to impact on a beam by a dropped mass. In this case the energy to be absorbed is the incoming kinetic energy plus the additional work

Get price

Types and Causes of Concrete Deterioration

Concrete can deteriorate for a variety of reasons, and concrete damage is often the result of a combination of factors. The following summary discusses potential causes of concrete deterioration and the factors that influence them. CORROSION OF EMBEDDED METALS Fig. 1. Corrosion of reinforcing steel is the most common cause of concrete ...

Get price

What is Impact load? and Impact stress Formula? - ExtruDesign

19/04/2018  Impact Stress Formula Derivation. l = Length of the bar. 𝛿 l = Deformation of the bar. E = Young’s modulus of the material of the bar. h = Height at which the load falls. A = Cross-sectional area of the bar. σ i = Impact Stress-induced in the bar due to the application of the impact load. P = Force at which the deflection is produced.

Get price
Contact us

Submit online

Please leave a message below and we will contact you as soon as possible.