A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Anti-cracking and impact-resistant concrete and preparation method thereof
The invention relates to the technical field of high-toughness concrete, and provides anti-cracking and impact-resistant concrete and a preparation method thereof. The concrete comprises the following components: cement, water, sand, stone, fly ash, a water reducing agent and modified polypropylene fiber. Wherein the modified polypropylene fiber is prepared by reacting 4 '-aminobenzo-15-crown-5-ether with stearoyl chloride to prepare a 15-crown-5-ether derivative containing an organic long chain, and coating the surface of the polypropylene fiber with the 15-crown-5-ether derivative. When the modified polypropylene fiber is added into a concrete formula, the polypropylene fiber can be promoted to be uniformly dispersed in a system, and the interface bonding of the polypropylene fiber and an inorganic matrix can be improved, so that the toughening modification effect of the polypropylene fiber on the concrete is improved, and the concrete has better anti-cracking and anti-impact properties.
本发明涉及高韧性混凝土的技术领域，提供了一种防开裂、抗冲击混凝土及制备方法。该混凝土的组分包括水泥、水、砂、石、粉煤灰、减水剂、改性聚丙烯纤维。其中，改性聚丙烯纤维是通过4'‑氨基苯并‑15‑冠‑5‑醚与硬脂酰氯反应制备含有机长链的15‑冠‑5‑醚衍生物，并使其包覆于聚丙烯纤维表面而制得。将该改性聚丙烯纤维添加到混凝土配方中，既可促进聚丙烯纤维在体系中均匀分散，又可改善聚丙烯纤维与无机基体的界面结合，从而提高聚丙烯纤维对混凝土的增韧改性效果，使混凝土具有更好的防开裂和抗冲击性能。
Anti-cracking and impact-resistant concrete and preparation method thereof
The invention relates to the technical field of high-toughness concrete, and provides anti-cracking and impact-resistant concrete and a preparation method thereof. The concrete comprises the following components: cement, water, sand, stone, fly ash, a water reducing agent and modified polypropylene fiber. Wherein the modified polypropylene fiber is prepared by reacting 4 '-aminobenzo-15-crown-5-ether with stearoyl chloride to prepare a 15-crown-5-ether derivative containing an organic long chain, and coating the surface of the polypropylene fiber with the 15-crown-5-ether derivative. When the modified polypropylene fiber is added into a concrete formula, the polypropylene fiber can be promoted to be uniformly dispersed in a system, and the interface bonding of the polypropylene fiber and an inorganic matrix can be improved, so that the toughening modification effect of the polypropylene fiber on the concrete is improved, and the concrete has better anti-cracking and anti-impact properties.
本发明涉及高韧性混凝土的技术领域，提供了一种防开裂、抗冲击混凝土及制备方法。该混凝土的组分包括水泥、水、砂、石、粉煤灰、减水剂、改性聚丙烯纤维。其中，改性聚丙烯纤维是通过4'‑氨基苯并‑15‑冠‑5‑醚与硬脂酰氯反应制备含有机长链的15‑冠‑5‑醚衍生物，并使其包覆于聚丙烯纤维表面而制得。将该改性聚丙烯纤维添加到混凝土配方中，既可促进聚丙烯纤维在体系中均匀分散，又可改善聚丙烯纤维与无机基体的界面结合，从而提高聚丙烯纤维对混凝土的增韧改性效果，使混凝土具有更好的防开裂和抗冲击性能。
Anti-cracking and impact-resistant concrete and preparation method thereof
一种防开裂、抗冲击混凝土及制备方法
PANG XIAOMING (author)
2023-11-17
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
High-temperature-resistant anti-cracking concrete and preparation method thereof
| European Patent Office | 2021
Environment-friendly low-temperature-resistant anti-cracking concrete and preparation method thereof
| European Patent Office | 2023