Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention relates to quick-setting high-strength concrete and a preparation method thereof. The quick-setting high-strength concrete is prepared from the following raw materials in parts by weight: 100 to 200 parts of cement, 80 to 100 parts of coarse aggregate, 40 to 60 parts of fine aggregate, 10 to 20 parts of rubber powder, 20 to 30 parts of modified straw-based carbon powder, 0.3 to 0.5 part of coupling agent and 0.6 to 0.8 part of water reducing agent, the modified straw-based carbon powder is prepared by the following steps: adding straw powder into an activation solution containing aluminum sulfate, carboxymethyl starch and triethanolamine, activating, ball-milling and freeze-drying to obtain a precursor, mixing the precursor with flaky aluminum powder, and heating and reacting in an inert atmosphere. The mass fraction of the aluminum sulfate is 5-10%, the mass fraction of the carboxymethyl starch is 5-10%, and the mass fraction of the triethanolamine is 3-5%. According to the invention, the modified straw-based carbon powder is doped into the concrete components, so that the quick-setting effect, the compression resistance, the fracture resistance and the crack resistance of the concrete are further improved, and the concrete has important significance for improving the comprehensive performance of the concrete and developing capital construction.
本发明涉及一种速凝高强度混凝土及其制备方法，所述速凝高强度混凝土包括以下重量份数的原料：水泥100‑200份，粗骨料80‑100份，细骨料40‑60份、橡胶粉10‑20份、改性秸秆基碳粉20‑30份、偶联剂0.3‑0.5份以及减水剂0.6‑0.8份；所述改性秸秆基碳粉是先将秸秆粉末加入含硫酸铝、羧甲基淀粉及三乙醇胺的活化溶液中，经活化、球磨、冷冻干燥获得前驱体，再将前驱体与片状铝粉混合后，在惰性气氛下加热反应获得，所述硫酸铝的质量分数为5‑10％、羧甲基淀粉的质量分数为5‑10％以及三乙醇胺的质量分数为3‑5％。本发明通过在混凝土组分中掺入改性秸秆基碳粉，使得混凝土的速凝效果、抗压抗折及抗裂性能得到进一步提升，对提高混凝土的综合性能，发展基建建设具有重要的意义。
The invention relates to quick-setting high-strength concrete and a preparation method thereof. The quick-setting high-strength concrete is prepared from the following raw materials in parts by weight: 100 to 200 parts of cement, 80 to 100 parts of coarse aggregate, 40 to 60 parts of fine aggregate, 10 to 20 parts of rubber powder, 20 to 30 parts of modified straw-based carbon powder, 0.3 to 0.5 part of coupling agent and 0.6 to 0.8 part of water reducing agent, the modified straw-based carbon powder is prepared by the following steps: adding straw powder into an activation solution containing aluminum sulfate, carboxymethyl starch and triethanolamine, activating, ball-milling and freeze-drying to obtain a precursor, mixing the precursor with flaky aluminum powder, and heating and reacting in an inert atmosphere. The mass fraction of the aluminum sulfate is 5-10%, the mass fraction of the carboxymethyl starch is 5-10%, and the mass fraction of the triethanolamine is 3-5%. According to the invention, the modified straw-based carbon powder is doped into the concrete components, so that the quick-setting effect, the compression resistance, the fracture resistance and the crack resistance of the concrete are further improved, and the concrete has important significance for improving the comprehensive performance of the concrete and developing capital construction.
本发明涉及一种速凝高强度混凝土及其制备方法，所述速凝高强度混凝土包括以下重量份数的原料：水泥100‑200份，粗骨料80‑100份，细骨料40‑60份、橡胶粉10‑20份、改性秸秆基碳粉20‑30份、偶联剂0.3‑0.5份以及减水剂0.6‑0.8份；所述改性秸秆基碳粉是先将秸秆粉末加入含硫酸铝、羧甲基淀粉及三乙醇胺的活化溶液中，经活化、球磨、冷冻干燥获得前驱体，再将前驱体与片状铝粉混合后，在惰性气氛下加热反应获得，所述硫酸铝的质量分数为5‑10％、羧甲基淀粉的质量分数为5‑10％以及三乙醇胺的质量分数为3‑5％。本发明通过在混凝土组分中掺入改性秸秆基碳粉，使得混凝土的速凝效果、抗压抗折及抗裂性能得到进一步提升，对提高混凝土的综合性能，发展基建建设具有重要的意义。
| Europäisches Patentamt | 2022
Quick-setting early-strength concrete and preparation method thereof
| Europäisches Patentamt | 2023
High-performance quick-setting early-strength concrete and preparation method thereof
| Europäisches Patentamt | 2022
Quick-setting concrete and preparation method thereof
| Europäisches Patentamt | 2020
Quick-setting concrete material and preparation method thereof
| Europäisches Patentamt | 2024