Slow-setting high-density concrete

The invention relates to slow-setting high-density concrete, which is mainly composed of composite Portland cement, fly ash, natural river sand, a filling material, a dispersant, a thickening agent, gravels and water. According to the invention, the concrete alkali-aggregate reaction can be effectively reduced, the overall strength of concrete is improved, and the service life of the concrete is prolonged. 本发明涉及一种慢凝固高密实混凝土。所述的混凝土主要由复合硅酸盐水泥、粉煤灰、天然河砂、填充料、分散剂、稠化剂、碎石、水构成。本发明能够有效降低混凝土碱集料反应的进行，提高了混凝土总体的强度和使用寿命。