Abstract:
Concrete is the main constituent material in many structures. This leads to difficulties in
simulation and modeling of concrete structures. In this research a 3D model of a concrete cube
is prepared using concrete damage plasticity approach. The validation of the model to the
desired properties/characteristics under monotonic loading is then discussed. Concrete test of
concrete containing Mega Flow SP1, Sikament NN, and SASplastSP60 superplasticizer chemical
admixtures at a dosage of 0%,0.5%,1%,1.5%,2% and 2.5%, cubical specimen
(15cm*15cm*15cm) was performed in a laboratory through each HRWRAs type. The results
indicate by 2% dosage SASPlast SP60 and MegaFlow SP1almost the same increment but
Sikament NN greater than the others, therefore Sikament NN HRWRAs is better designed for
2% dosage. The results indicate by 2% dosage SASPlast SP60 and MegaFlow SP1almost the
same increment but Sikament NN greater than the others, therefore Sikament NN HRWRAs is
better designed for 2% dosage The experimental results obtained were then used as input
parameters for the numerical solution which were simulated using software. The strength of the
concrete depends on a lot of factors including curing time, temperature, water cement ratio,
moisture condition etc, and hence the modeling of the concrete specimen should be done
carefully. Concrete damaged plasticity model available in ABAQUS software package was used
to reflect the characteristics of the concrete model in compression as well as tension. Three dimensional non-linear finite element model was developed and analyzed by the Quasi-static
technique using the ABAQUS standard model. Results show that the model simulated using
Finite element method was able to predict the damage properties/characteristics of concrete
specimen fairly accurately despite the variable nature of concrete. Hence, finite element analysis
is an economical and time efficient method of advanced structural analysis that can be used to
study the structural characteristics of concrete. Additionally, 2% superplasticizer admixture has
been provided the optimum results on compressive strength of concrete of all the tested
superplasticizer types. Finally finite element modeling with experimental validation results the
results display a good correlation between these two approaches