Summit Materials recently closed on Buildex Inc., Ottawa, Kan.-based proprietor of the Haydite
brand of expanded shale lightweight aggregate.
Each CW tank was filled with graded smooth cobblestone ([empty set], 30-50 mm; height, 80 mm) as the bottom layer, haydite
([empty set], 5-8 mm; height, 100 mm) as the middle layer, and smaller haydite
([empty set], 3-5 mm; height, 120 mm) as the top layer.
Du et al., "Feasibility research on sintering municipal sewage for manufacturing haydite
," China Water and Wastewater, vol.
When the bed temperature of the semicoke circulating in the fluidized bed is below 800 [degrees]C, shale ash with a well-developed pore structure and high activity can be obtained and it is suitable for producing building materials such as cement and haydite
Wang and Song  investigated the failure criterion of the haydite
concrete under triaxial loading.
The ash residue generated from combustion can be used as raw material of cement, haydite
and building blocks.
concrete structures ([TEXT NOT REPRODUCIBLE IN ASCII.]).