Ready - Mixed Concrete produced by Alamo Concrete The declared unit is 1 cubic meter (1 cubic yard) of ready mixed concrete product. The defined concrete mix is intended for commercial applications developed and produced by Alamo Concrete. Key product variables include: Compressive strength - Compressive strengths are represented in the mix design and include the number of days after pouring as a part of the reference value: e.g., 3,000 psi @ 28 days; 4,000 psi @ 56 days; 6,000 psi @ 90 days; etc. - Water to cementitious materials ratio (w/cm) – Varies but generally lower for a higher strength non-air entrained mix design (above 5,000 psi (34.5 MPa)) in accordance with ACI 211.1 recommendations. -SCM use – various mix designs call for Portland cement displacement by incorporating fly ash (FA) and/or slag cement (SL). - Admixtures use – Admixtures used was specified for the mix design that was modeled. These admixtures can include an airentraining admixture, water reducing and accelerating admixtures, and high range water reducer admixtures - No hazardous substances are present in the declared product