Lightweight aggregates are providing new, consistent and cost effective options to address environmental concerns about the threat of stormwater to our clean water supply. Lightweight aggregates from Trinity Lightweight provides design flexibility for stormwater management programs in meeting this environmental concern.
For stormwater applications, Trinity Lightweight expanded shale and clay aggregate is environmentally inert, generally neutral pH, and absorbs water. Lightweight aggregate is a ceramic material made by calcining clay at temperatures in excess of 2000 degrees Fahrenheit.
As a filter medium, lightweight aggregate is very durable, and coupled with its porous structure and increased surface area, it is an exceptional filtering material for metalloids, suspended solids, oil and grease.
Trinity Lightweight offers low-maintenance solutions that meet existing and proposed government regulations without the use of chemicals, specialized equipment or major facility upgrades. On-site stormwater management contributes toward LEED green building certification credit. The use of expanded shale and clay in such designs offers improved performance and longevity.
As a replacement for sand, lightweight aggregate raises the bar for stormwater treatment performance to new heights. The effectiveness of this new application is currently being tested by treatment unit manufacturers across the country. Lightweight aggregate has the long-term ability to absorb nutrients and maintain hydraulic flow to ensure that water treatment is effective and sustainable.
There’s a meadow five stories above the busy city streets of Nashville complete with green grass and rolling hills. This green space in the sky is actually the roof of a new convention center in the Music City.
After nearly a decade, the unique properties of lightweight aggregate continue to be useful for plant growth and storm water management on the Georgia Tech campus near downtown Atlanta.