VERSATILE SUSTAINABLE CLSM MIXTURES

摘要

Through extensive research at the local, state, and national level with government, utilities, chemical admixture producers, aggregate producers, and material recyclers, Tennessee Technological University (TTU) researchers, with extensive assistance from the Tennessee Concrete Association (TCA), have learned to tailor sustainable controlled low-strength materials (CLSM) mixtures to customer needs. Specifically, TTU and TCA have developed sustainable CLSM mixtures which are also: 1. Rapid set mixtures - can support light vehicular traffic in 2 to 6 hours. 2. Excavatable mixtures - can be removed with a backhoe in the long term. 3. Extremely fluid mixtures -flow greater than 16-inches without segregation. Recent research shows that it is possible to design and produce a sustainable CLSM mixture with attributes 1, 2, and 3. The old adage was apparently wrong; you can have your cake and eat it too. CLSM mixtures can achieve challenging performance goals and be environmentally friendly.