It is perceived that roadway pavement is highly permeable. How is this product fundamentally different from roadway pavement?
The fundamental advantage of MatCon over conventional asphalt pavements is low permeability. The aggregate gradation, coupled with modified asphalt makes it easier to construct a low void, highly durable layer. Typical permeability values may be about as follows: For asphalt pavement (6 – 8% air voids): k @ 1×10-5 cm/sec For MatCon (<3% air voids) k < 1x10-8 cm/sec Hydraulic asphalt containing large amounts of fine material has often been promoted in the past for water or waste containment, but usually results in a design that is difficult to build and is inconsistent in its ability to reduce permeability. In order to obtain reduced permeability, the design requires large amounts of fine aggregate (dust). This, in turn, requires very high quantities of hard based (high viscosity) asphalt binder to coat the fines. This attempt to reduce permeability results in a mixture that is difficult to compact (tender), thus inconsistent in uniformity of voids and permeability. It is very difficult
Related Questions
- It is perceived that roadway pavement is highly permeable. How is this product fundamentally different from roadway pavement?
- What makes the Farmers Choice family of fluid milk products different from Farmers other fluid milk product lines?
- What are the 2 different product platforms and what do they contain?
