Is definitely the area of the concrete gonna be exposed to The weather and getting a broom end? If that is so, use an air-entrained exterior blend. Other samples of cost personal savings could relate to expansion joints, number of prestressing strands required, or reduction in curling of flooring slabs. https://airentrainingadmixture29517.tinyblogging.com/what-does-concrete-additives-mean-76054799