Finite element models were developed to study the effect of various environmental conditions and slab restraints on the development of stress in the slabs. The models were

Finite element modeling of early age concrete behavior using DIANA 129 R. Witasse & M.A.N. Hendriks Numerically simulated pore structure and its potential application in high performance concrete 135 G. Ye, K. van Breugel &J.Hu Numerical modelling of microstructure development and strength of cementitious materials 141

loading. This paper presents a simplified stress-strain model suitable for monotonic and cycling loading capable of predicting the FRP’s effect on reinforced-concrete columns. The model is inspired by two well-known concrete constitutive laws: one based on damage mechanics (La Borderie’s concrete-damage model, 1991); the

2.2 The processes developed in latex modified concrete 10 2.3 Pore size distribution of unmodified concrete and LMC 11 2.4 Change in compressive strength, LMC and normal concrete comparison 14 2.5 Comparison of shrinkage performance between LMC and conventional concrete 22 3.1 Stress distribution around an elliptical hole in an infinitely large

nificantly in some cases by examining the hydration and cracking process with a transient Finite-Element analysis for a given structure more closely. stress has to be taken into account. It is widely accepted that it is accurate to calculate the fields Development of the properties of early age concrete 0 0.2 0.4 0.6 0.8 1.0 0 0.2 0.4 0

to the environment. Figure 2 shows the finite element model used in the thermal analysis. In view of the symmetry of the problem the model is restricted to one quarter. The model includes the foundation and part of the soil beneath it. For the stress calculation phase the model is restricted to the hydrating concrete part.

The EURO-C conference series (Split 1984, Zell am See 1990, Innsbruck 1994, Badgastein 1998, St. Johann im Pongau 2003, Mayrhofen 2006, Schladming , St. Anton am Arlberg , and Bad Hofgastein ) brings together researchers and practising engineers concerned with theoretical, algorithmic and validation aspects associated with computational simulations of concrete and concrete

Aug 05,  · The positions of maximum Mises stress for the whole model under different conditions mainly focused on the initial part of the region R. The maximum Mises stress between different diameters showed a big difference. The results can provide the basic data for the finite-element modelling of

The effect of curing and deterioration on Stress Wave Velocities in Concrete" ASCE Journal of Materials in Civil Engineering, 17(2) pp 153-158, 2005 Cumming S.R., Boyd, A.J., & Ferraro C.C., "Tensile Strength Prediction in Concrete using Nondestructive Testing Techniques", Journal of Research in Nondestructive Evaluation, ASNT, 17(4

Thermal cracking in concrete at early ages may influence the long-term durability of a structure. A finite-element method to predict early-age stress development is developed to consider

Jan 01,  · Three-dimensional finite-element analysis was used to model the early-age stress development of concrete, and a rate-type creep analysis was used herein. Four creep compliance models, including the B3 Model, Modified B3 Model, B3 Model with R T, and B4 Model were incorporated in the finite-element model. Experimental results from restraint of volume change tests with a rigid cracking frame were used to assess the accuracy of the finite-element