Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Salt freezing cycle resistant recycled concrete and preparation method thereof
The invention discloses salt freezing cycle resistant recycled concrete and a preparation method thereof, and belongs to the technical field of building materials. The concrete is prepared from the following raw material components in parts by weight: 961 to 989 parts of recycled coarse aggregate, 638 to 672 parts of fine aggregate, 244 to 267 parts of cement, 61 to 67 parts of coal ash, 19 to 23 parts of silicon powder, 80 to 89 parts of mineral powder, 0.34 to 0.51 part of polypropylene fiber, 2.01 to 2.25 parts of a water reducing agent, 0.01 to 0.07 part of an air entraining agent, 0.1 to 0.6 part of a dispersing agent and 159 to 173 parts of water. According to the invention, the polypropylene fiber is used as a reinforcing fiber, and the composite fly ash, the silicon powder and the mineral powder are added into the concrete together to form a three-dimensional network structure in a concrete matrix, so that the expansion of original defects in the matrix is prevented, the deformation resistance of the matrix is improved, the frost heaving cracking of the concrete is effectively relieved, and the service life of the concrete is prolonged. Therefore, the mechanical property and the salt freezing damage resistance of the concrete are improved.
本发明公开了一种抗盐冻循环的再生混凝土及其制备方法，属于建筑材料技术领域。所述混凝土原料组分包括，再生粗骨料961～989份，细骨料638～672份，水泥244～267份，粉煤灰61～67份，硅粉19～23份，矿粉80～89份，聚丙烯纤维0.34～0.51份，减水剂2.01～2.25份，引气剂0.01～0.07份，分散剂0.1～0.6份，水159～173份。本发明通过将聚丙烯纤维作为增强纤维，复掺粉煤灰、硅粉、矿粉一同加入混凝土中，在混凝土基体内构成三维网状结构，阻止了基体中原有缺陷的扩展，提高了基体抗变形的能力，有效缓解了混凝土的冻胀开裂，从而提高了混凝土的力学性能和抗盐冻损伤能力。
Salt freezing cycle resistant recycled concrete and preparation method thereof
The invention discloses salt freezing cycle resistant recycled concrete and a preparation method thereof, and belongs to the technical field of building materials. The concrete is prepared from the following raw material components in parts by weight: 961 to 989 parts of recycled coarse aggregate, 638 to 672 parts of fine aggregate, 244 to 267 parts of cement, 61 to 67 parts of coal ash, 19 to 23 parts of silicon powder, 80 to 89 parts of mineral powder, 0.34 to 0.51 part of polypropylene fiber, 2.01 to 2.25 parts of a water reducing agent, 0.01 to 0.07 part of an air entraining agent, 0.1 to 0.6 part of a dispersing agent and 159 to 173 parts of water. According to the invention, the polypropylene fiber is used as a reinforcing fiber, and the composite fly ash, the silicon powder and the mineral powder are added into the concrete together to form a three-dimensional network structure in a concrete matrix, so that the expansion of original defects in the matrix is prevented, the deformation resistance of the matrix is improved, the frost heaving cracking of the concrete is effectively relieved, and the service life of the concrete is prolonged. Therefore, the mechanical property and the salt freezing damage resistance of the concrete are improved.
本发明公开了一种抗盐冻循环的再生混凝土及其制备方法，属于建筑材料技术领域。所述混凝土原料组分包括，再生粗骨料961～989份，细骨料638～672份，水泥244～267份，粉煤灰61～67份，硅粉19～23份，矿粉80～89份，聚丙烯纤维0.34～0.51份，减水剂2.01～2.25份，引气剂0.01～0.07份，分散剂0.1～0.6份，水159～173份。本发明通过将聚丙烯纤维作为增强纤维，复掺粉煤灰、硅粉、矿粉一同加入混凝土中，在混凝土基体内构成三维网状结构，阻止了基体中原有缺陷的扩展，提高了基体抗变形的能力，有效缓解了混凝土的冻胀开裂，从而提高了混凝土的力学性能和抗盐冻损伤能力。
Salt freezing cycle resistant recycled concrete and preparation method thereof
一种抗盐冻循环的再生混凝土及其制备方法
ZHANG SHAOHUA (Autor:in) / ZHANG GUIHUA (Autor:in) / LU LONGZHAO (Autor:in)
05.04.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Preparation method of anti-freezing recycled concrete and anti-freezing recycled concrete
| Europäisches Patentamt | 2022
Salt-resistant anti-freezing high-durability concrete and preparation method thereof
| Europäisches Patentamt | 2024
Salt-freezing-resistant high-performance precast concrete curb and preparation method thereof
| Europäisches Patentamt | 2022
Waterproof and anti-freezing recycled concrete and preparation method thereof
| Europäisches Patentamt | 2021
Freezing-resistant plateau concrete and preparation method thereof
| Europäisches Patentamt | 2024