ABSTRACT
This paper presents research performed to identify mixture proportions and develop an in-situ mixed concrete for a 1.416 hectare [3.5 acre] storage pad for bottom ash and synthetic gypsum produced at We Energies' Pleasant Prairie Power Plant, which is located in Kenosha County, Wisconsin. Ingredients of the concrete produced consisted of recycled concrete coarse aggregate, bottom ash fine aggregate, Class C fly ash and either Portland cement or slag cement yielding a 93% or 100% recycled content, respectively. Compressive strengths attained 21 MPa [3,100psi] for the portland cemeht/Class C fly ash blend at an age of 1 year and 12-14 MPa [ 1,700-2,000 psi] for the Slag cement/Class C fly ash blend.
