Modeling the linear elastic properties of Portland cement paste

By Claus-Jochen Haecker, Edward J. Garboczi, Jeffrey Bullard, Robert B. Bohn, Zhihui Sun, Surendra P. Shah, T. Voigt. 2005

419 citations recorded by the source corpus.

Abstract The linear elastic moduli of cement paste are key parameters, along with the cement paste compressive and tensile strengths, for characterizing the mechanical response of mortar and concrete. Predicting these moduli is difficult, as these materials are random, complex, multi-scale composites. This paper describes how finite element procedures combined with knowledge of individual phase moduli are used, in combination with a cement paste microstructure development model, to quantitatively predict elastic moduli as a function of degree of hydration, as measured by loss on ignition. Comparison between model predictions and experimental results are good for degrees of hydration of 50% or greater, for a range of water : cement ratios. At early ages, the resolution of the typical 1003 digital microstructure is inadequate to give accurate results for the tenuous cement paste microstructure that exists at low degrees of hydration. Elastic computations were made on higher resolution microstructures, up to 4003, and compared to early age elastic moduli data. Increasing agreement with experiment was seen as the resolution increased, even when ignoring possible viscoelastic effects.

Subfields: Civil and Structural Engineering

View Paper: https://www.semanticscholar.org/paper/86be03520ead427069ea51ea71d4bd7de2bd9d5d

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Civil and Structural Engineering

Citations in the corpus

Mechanisms of autogenous shrinkage of alkali-activated slag and fly ash pastes (2020, result): “The elastic modulus of AAMs is slightly lower than that of OPC paste made from similar water/binder ratios according to the results reported in [61,86].”
Modelling Elasticity of a Hydrating Cement Paste (2007, neutral): “[2] measured the degree of hydration and Young's modulus at 14, 28 and 56 days on two different cements for w/c ranging from 0.”
Micromechanical investigation of Portland cement paste (2014, neutral): “Experimental data were adopted from [4,5,12].”
Spherical and acicular representation of hydrates in a micromechanical model for cement paste: prediction of early-age elasticity and strength (2009, positive): “This inspired several follow-up works, e.g., [ 31 ,35,54,57].”
Microstructure-based micromechanical prediction of elastic properties in hydrating cement paste (2006, result): “More sophisticated, direct homogenization via FEM from a discrete hydration model also yielded good results, even for leached cement pastes [9,12,16].”
Modeling and simulation of cement hydration kinetics and microstructure development (2011, methodology): “Moreover, the microstructure at any time can be input to finite element or finite difference models to calculate the effective DC conductivity [71], AC impedance spectra [72], liquid permeability [73], or elastic moduli [74].”
Property investigation of individual phases in cementitious composites containing silica fume and fly ash (2015, neutral): “[42].”