High-strength concrete and preparation method thereof

The invention relates to the field of concrete, and particularly discloses high-strength concrete and a preparation method thereof. The high-strength concrete is prepared from the following raw materials in parts by weight: 60 to 100 parts of aggregate, 40 to 60 parts of slag powder, 40 to 70 parts of cement, 0.4 to 0.6 part of water reducing agent, 8 to 15 parts of isopropanolamine, 2 to 7 parts of modified siloxane and 20 to 40 parts of water. The preparation method comprises the following steps: mixing and uniformly stirring the cement and the water, then adding the water reducing agent, the aggregate, the slag powder, the isopropanolamine and the modified siloxane, and uniformly conducting mixing to obtain the high-strength concrete. The concrete disclosed by the invention has relatively high compressive strength and good workability. 本申请涉及混凝土的领域，具体公开了一种高强度混凝土及其制备方法。高强度混凝土，原料按重量份计，包括骨料60-100份、矿渣粉40-60份、水泥40-70份、减水剂0.4-0.6、异丙醇胺8-15份、改性硅氧烷2-7份、水20-40份；其制备方法为：将水泥和水混合并搅拌均匀，然后加入减水剂、骨料、矿渣粉、异丙醇胺、改性硅氧烷并混合均匀制得高强度混