PERVIOUS COMPOSITE MATERIALS, METHODS OF PRODUCTION AND USES THEREOF

摘要

The invention provides novel pervious composite materials that possess excellent physical and performance characteristics of conventional pervious concretes, and methods of production and uses thereof. These composite materials can be readily produced from widely available, low cost raw materials by a process suitable for large-scale production with improved energy consumption, desirable carbon footprint and minimal environmental impact.

主权项

1. A pervious composite material comprising:
a plurality of bonding elements, wherein each bonding element comprises:
a core comprising primarily calcium silicate,a silica-rich first or inner layer, anda calcium carbonate-rich second or outer layer; a plurality of aggregates having sizes of about 0.25 mm to about 25 mm; and a plurality of pores having sizes from about 0.1 mm to about 10 mm, wherein
the plurality of bonding elements and the plurality of aggregates together form one or more bonding matrices and the bonding elements and aggregates are substantially evenly dispersed therein and bonded together; andthe plurality of pores account for from about 5 vol. % to about 40 vol. % of the pervious composite material and form interconnected channels allowing the composite material to be permeable; and, whereby
the pervious composite material exhibits a density from about 1,500 kg/m3 to 2,200 kg/m3, a compressive strength from about 3.0 MPa to about 30 MPa, a flexural strength from about 1.0 MPa to about 4.0 MPa, and a permeability from about 100 cm/hr to about 8,000 cm/hr.