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Sensitivity of the strength and toughness of concrete to the properties of the interfacial transition zone

Journal Article · · Construction and Building Materials

We report Civil infrastructure is made primarily of concrete structures or components and therefore understanding durability and fracture behavior of concrete is of utmost importance. Concrete contains an interfacial transition zone (ITZ), a porous region surrounding the aggregates, that is often considered to be the weakest region in the concrete. The ITZ is poorly characterized and property estimates for the ITZ differ considerably. In this simulation study, representative concrete mesostructures are produced by packing coarse aggregates with realistic geometries into a mortar matrix. A meshless numerical method, peridynamics, is utilized to simulate the mechanical response including fracture under uniaxial compression and tension. The sensitivity of the stiffness and fracture toughness of the samples to the ITZ properties is computed, showing strong relationships between the ITZ properties and the effective modulus and effective yield strength of the concrete. These results provides insight into the influence of the poorly characterized ITZ on the stiffness and strength of concrete. This work showcases the applicability of peridynamics to concrete systems, matching experimental strength and modulus values. Additionally, relationships between the ITZ’s mechanical properties and the overall concrete strength and stiffness are presented to enable future design decisions.

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States); Sandia National Laboratories (SNL-CA), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
NA0003525
OSTI ID:
1872029
Report Number(s):
SAND2022-6829J; 706583
Journal Information:
Construction and Building Materials, Journal Name: Construction and Building Materials Vol. 336; ISSN 0950-0618
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (41)

Note on dynamic relaxation journal January 1971
Application of size effect to compressive strength of concrete members journal August 2002
Peridynamic States and Constitutive Modeling journal July 2007
The Meaning, Selection, and Use of the Peridynamic Horizon and its Relation to Crack Branching in Brittle Materials journal June 2012
Quantitative characterization and elastic properties of interfacial transition zone around coarse aggregate in concrete journal July 2017
Effect of loading rate on fracture characteristics of rock journal February 2010
Analysis of crack formation and crack growth in concrete by means of fracture mechanics and finite elements journal November 1976
Application of depth-sensing microindentation testing to study of interfacial transition zone in reinforced concrete journal August 2000
Three-dimensional mathematical analysis of particle shape using X-ray tomography and spherical harmonics: Application to aggregates used in concrete journal October 2002
Inhomogeneous Interfacial Transition zone Model for the bulk Modulus of Mortar journal July 1997
Effective Young's modulus estimation of concrete journal September 1999
The cohesive zone model: advantages, limitations and challenges journal January 2002
Reformulation of elasticity theory for discontinuities and long-range forces journal January 2000
Analytical studies on local damage to reinforced concrete structures under impact loading by discrete element method journal February 1998
Numerical study of rock and concrete behaviour by discrete element modelling journal December 2000
Latin hypercube sampling and the propagation of uncertainty in analyses of complex systems journal July 2003
Impact of silica fume, fly ash, and metakaolin on the thickness and strength of the ITZ in concrete journal October 2019
A phase-field description of dynamic brittle fracture journal April 2012
A meshfree method based on the peridynamic model of solid mechanics journal June 2005
Experimental study and application of mechanical properties for the interface between cobblestone aggregate and mortar in concrete journal September 2013
Meso-fracture simulation of cracking process in concrete incorporating three-phase characteristics by peridynamic method journal February 2018
Investigation of engineering properties of normal and high strength fly ash based geopolymer and alkali-activated slag concrete compared to ordinary Portland cement concrete journal January 2019
A mechanical-diffusive peridynamics coupling model for meso-scale simulation of chloride penetration in concrete under loadings journal April 2020
Nano- and micro-scale characterisation of interfacial transition zone (ITZ) of high volume slag and slag-fly ash blended concretes containing nano SiO2 and nano CaCO3 journal February 2021
Simulation of hardened cement degradation and estimation of uncertainty in predicted failure times with peridynamics journal June 2021
Strengthening the very early-age structure of cementitious composites with coal fly ash via incorporating a novel nanoadmixture based on C-S-H phase activators journal December 2021
A continuum phase field model for fracture journal December 2010
Effects of testing methods and conditions on the elastic properties of limestone rock journal July 2004
Effect of aggregate shapes on local fields in 3D mesoscale simulations of the concrete creep behavior journal April 2019
Microstructure homogenization of concrete used in nuclear power plants journal April 2021
Effect of wetting–drying cycles on mode I and mode II fracture toughness of sandstone in natural (pH = 7) and acidic (pH = 3) environments journal June 2020
Improved Model for Three-Dimensional Virtual Concrete: Anm Model journal March 2016
Some Topics in the Theory of Fluids journal December 1963
An algorithm for the machine calculation of complex Fourier series journal May 1965
Anm: a geometrical model for the composite structure of mortar and concrete using real-shape particles journal November 2014
A discrete numerical model for granular assemblies journal March 1979
MOSAIC: An Effective FFT-based Numerical Method to Assess Aging Properties of Concrete journal January 2021
Improvement of Strength Parameters of Cement Matrix with the Addition of Siliceous Fly Ash by Using Nanometric C-S-H Seeds journal December 2020
SEM Image Analysis in Permeable Recycled Concretes with Silica Fume. A Quantitative Comparison of Porosity and the ITZ journal July 2019
The Effect of Aggregate Shape on the Properties of Concretes with Silica Fume journal June 2020
Application of the C-S-H Phase Nucleating Agents to Improve the Performance of Sustainable Concrete Composites Containing Fly Ash for Use in the Precast Concrete Industry journal October 2021

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