Oakland 12th Street Project at Lake Merritt. Over 75,000 cubic yards of light-weight cellular concrete were used as a backfill substitute for earth fill. The use of cellular concrete allowed the engineers to reduce the construction schedule by six months
The Lightweight Cellular Concrete Solution
Lightweight Cellular Concrete, also referred to as foam concrete is produced by the addition of an air-entraining agent or a preformed foam to a slurry of portland cement, fly ash, water, and occasionally, aggregates. The resulting mixture is highly flowable and pumpable. Cellular concrete is relatively strong, low-density, and has a bearing capacity stronger than compacted fill. Common uses include, roof insulation, blocks and walls panels, floor leveling, road sub-base, bridge abutments, and ground stabilization.
Impervious LCC has been used successfully as fill for over 50 years. LCC has been used to reduce settlements under the two touchdown ramps of the new Oakland Bay Bridge. LCC has been used for the San Bruno Grade Separation to reduce loads on the BART tube underneath. LCC has been used to save $22 million and shorten the schedule for the Colton Crossing grade separation.Benefits of Using Concrete for Streets & Roads
LCC saves time, money, and resources by replacing aggregates with air bubbles in grade separations and other fills.
• Solves settlement problems for bridge abutments, embankments, and other infrastructure by reducing weight by a factor of four
• Solves low site problems while increasing bearing capacity by providing economical, quick methods to raise grade over large areas.
Documents and Resources