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Allied Products: Structural Soil Structural soil is an air-entrained mixture of quality aggregate and "soil" formulated to support various pavement types while allowing voids for air exchange, water movement, organic matter, and root growth. Currently, urban trees are planted directly into existing urban soils, tree pits with root barriers or expensive bridged pavement. The soil under pavement in areas adjacent to tree plantings is an important potential source of additional root space. Structural soil installed under paving allows tree roots to grow into the mix as they mature without causing pavement failure. To provide the physical properties vital for root growth, four factors are very important when designing a lightweight structural soil mix: High Load Carrying Capacity: The aggregate particles must touch so the load is transferred mainly from particle to particle. Long Term Stability: The lightweight aggregate must have sufficient strength to withstand standard compaction while also providing additional aeration and water retention capabilities. Optimum Ratios: The voids between particles must be filled through the proper mixing of materials so to be relatively free of any compactive stress. The filler material, if properly formulated, will control the moisture and aeration properties of the mix, and provide the media into which the roots will eventually grow. Proven Quality and Technology: The mix, when properly tested, installed and compacted will meet the specified requirements to avoid failure. STALITE MATRIX™ Structural Soil
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Pine Hall Brick