Experimental Study and Analytical Modeling on Fatigue Properties of Pervious Concrete Made with Natural and Recycled Aggregates

Xudong Chen,Shengtao Li,Saisai Liu,Nan Shen,Dandan Shi

doi:10.1186/s40069-018-0305-0

Xudong Chen, Shengtao Li + Show 3 more

Open Access

https://doi.org/10.1186/s40069-018-0305-0

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Abstract

As a solid pollutant, the recycled aggregate can be reused to replace the natural aggregate to cast pervious concrete, promoting resource recycling and reducing environmental pollution. Pervious concrete is usually applied to transportation engineering as pavements and decks, which are often subjected to fatigue loads in service. Therefore, it is essential to investigate the fatigue mechanical properties of pervious concrete. In this study, four-point cyclic bending loading test of natural aggregate pervious concrete and recycled aggregate pervious concrete were conducted under four different stress levels. By analyzing the experimental results, the mechanical performances, including hysteresis curve characteristics, damping ratio, dynamic elastic modulus and cyclic strain, of two kinds of pervious concrete under cyclic loading were revealed. Based on the improved EPF model, the relationship between fracture parameters, plastic strain and unloading strain were obtained. Besides, the relationship between the loading cycles and the ratio of plastic strain to unloading strain was received according to fatigue testing data under different stress levels. Further, the simplified fatigue model of pervious concrete was proposed and the experimental data was fitted with the model results. The fitting result reached a good agreement.

Highlights

The lack of permeability of the pervious concrete pavement has brought great negative effects on the urban ecological environment, including urban waterlogging and traffic congestion (Joshaghani et al 2015; Chandrappa and Biligiri 2016)
The porosity of pervious concrete mainly depends on the aggregate gradation (Sumanasooriya and Neithalath 2011)
The most common application of pervious concrete is in the field of transportation engineering (Yang and Jiang 2003)

Summary

Introduction

The lack of permeability of the pervious concrete pavement has brought great negative effects on the urban ecological environment, including urban waterlogging and traffic congestion (Joshaghani et al 2015; Chandrappa and Biligiri 2016). Pervious concrete is a special material with high permeability by reducing the amount of fine aggregate in the concrete composition (Qin et al 2015). It is of great significance to use recycled building materials to develop pervious concrete reasonably and effectively so as to satisfy simultaneously requirements of high strength and good permeability. It is a solution to avoid two situations: removing construction waste and reducing the need of natural aggregate, preserving in both ways the natural resources (Thomas et al 2014a). This is the focus that scholars still need to study in the future (Senaratne et al 2016)

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