Abstract
Pervious concrete is a special type of concrete that differs from ordinary concrete by its highly porous nature, which is why this type of discrete material can not be modelled using the Finite Element Method (FEM). Behaviour of pervious concrete samples with different aggregate sizes and void ratios is simulated in the paper, using the Particle Flow Code (PFC) software, which is based on the discrete element method (DEM). The PFC software is used to simulate various experimental results obtained on high paste content pervious concrete samples.
Highlights
The present work continues on the experimental study of pervious concrete samples conducted by Deo and Neithlath (2011) [14] by using the Discrete Element Method (DEM) based computer software named Particle Flow Code (PFC)
The results demonstrate the effectiveness of the PFC on various samples, and so the PFC can be utilised as an effective tool in future performance based studies
Based on the above results, it can be concluded that the Discrete Element Method (DEM) is an effective tool for obtaining performance of discrete types of materials like pervious concrete and, after proper set up of parameters, the model can lead to results that are strongly correlated to real laboratory test observations
Summary
Previous studies have shown that porosity and strength are inversely proportional to each other and, a perfect combination of strength and porosity is required in the production of pervious concrete. Various factors such as the water-cement ratio (W/C), size of aggregates, aggregate-cement ratio (A/C), method and level of compaction, and use of additional admixtures, play an important role in the performance of pervious concrete [4,5,6,7,8,9,10,11,12,13]. The results demonstrate the effectiveness of the PFC on various samples, and so the PFC can be utilised as an effective tool in future performance based studies
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