A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a preparation method of high-strength concrete. The high-strength concrete includes 300-450 parts of cement, 800-1200 parts of coarse aggregate, 650-900 parts of fine aggregate, 450-700 parts of fly ash, 50-120 parts of silica fume, 100-150 parts of ultra-fine slag, 17-23 parts of engineering fiber, 10-20 parts of calcium chloride / sodium nitrite composite agent, 20-40 parts of a water reducer and 350-600 parts of water. The compressive strength of this kind of the high strength concrete is up to 92MPa. The dry apparent density is as low as 1421 kg/m < 3 >, and compared with common high-strength concrete, the technical scheme provided by the invention has the advantages that the compressive strength of the high-strength concrete is obviously enhanced, and the dry apparent density is obviously reduced.
本发明公开一种高强度混凝土制备方法，高强度混凝土包括水泥300‑450份、粗骨料800‑1200份、细骨料650‑900份、粉煤灰450‑700份、硅粉50‑120份、超细矿渣100‑150份、工程纤维17‑23份、氯化钙/亚硝酸钠复合剂10‑20份、减水剂20‑40份、水350‑600份，该种高强度混凝土抗压强度高达92MPa，干表观密度低至1421kg/m3，与普通高强度混凝土相比，本发明提供的技术方案使得高强度混凝土的抗压强度得到显著加强，干表观密度低明显降低。
The invention discloses a preparation method of high-strength concrete. The high-strength concrete includes 300-450 parts of cement, 800-1200 parts of coarse aggregate, 650-900 parts of fine aggregate, 450-700 parts of fly ash, 50-120 parts of silica fume, 100-150 parts of ultra-fine slag, 17-23 parts of engineering fiber, 10-20 parts of calcium chloride / sodium nitrite composite agent, 20-40 parts of a water reducer and 350-600 parts of water. The compressive strength of this kind of the high strength concrete is up to 92MPa. The dry apparent density is as low as 1421 kg/m < 3 >, and compared with common high-strength concrete, the technical scheme provided by the invention has the advantages that the compressive strength of the high-strength concrete is obviously enhanced, and the dry apparent density is obviously reduced.
本发明公开一种高强度混凝土制备方法，高强度混凝土包括水泥300‑450份、粗骨料800‑1200份、细骨料650‑900份、粉煤灰450‑700份、硅粉50‑120份、超细矿渣100‑150份、工程纤维17‑23份、氯化钙/亚硝酸钠复合剂10‑20份、减水剂20‑40份、水350‑600份，该种高强度混凝土抗压强度高达92MPa，干表观密度低至1421kg/m3，与普通高强度混凝土相比，本发明提供的技术方案使得高强度混凝土的抗压强度得到显著加强，干表观密度低明显降低。
| European Patent Office | 2020
High-strength fiber concrete and preparation method of high-strength fiber concrete additive
| European Patent Office | 2020