ABSTRACT
Concrete has always been known as good, dense (solid), and durable construction material. In recent years, however, it has been found that even less solid (“pervious,” as we call it) concrete can also be useful and durable and can contribute to sustainability in various ways. The purpose of this chapter is to introduce the reader to this new aspect of concrete and to the different bene’ts that can be derived and used to satisfy many criteria of sustainability applied earlier to other concretes. Although
7.1 Introduction .................................................................................................. 151 7.2 What Is Pervious Concrete? .......................................................................... 152 7.3 The EPA and Pervious Concrete .................................................................. 153 7.4 Characteristics and Design of Materials ....................................................... 154 7.5 Cementitious Materials ................................................................................. 154 7.6 Mixture Proportions ..................................................................................... 156 7.7 Properties of Pervious Concrete ................................................................... 156 7.8 Design ........................................................................................................... 158 7.9 Construction .................................................................................................. 158 7.10 Standards for Testing and Maintenance ....................................................... 160 7.11 Comparison of Conventional and Pervious Concrete ................................... 161 7.12 Performance .................................................................................................. 161 7.13 Applications .................................................................................................. 162 7.14 Sustainability ................................................................................................ 164 References .............................................................................................................. 165 Additional Reading ................................................................................................ 165 Appendix: Pore Structure of Pervious Concretes and Its Relationship to Performance ........................................................................................................... 166
A.1 Pore Sizes and Methods for Representation ..................................... 167 A.2 Speci’c Surface Area and Mean Free Spacing of Pores .................. 169 A.3 Connectivity of the Pore Structure ................................................... 170 A.4 Permeability and Its Relationship to Pore Structure ........................ 170 References for Appendix A ........................................................................... 174
considerably more information is available, only a selected version is presented. The reader may pursue the topic further in his or her own way if it is of special interest.
