Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses asphalt concrete for severe cold areas, and relates to the technical field of building materials. The asphalt concrete is prepared from the following raw materials in parts by weight: 60 to 80 parts of cement, 15 to 30 parts of fly ash, 10 to 20 parts of gravel, 8 to 12 parts of petroleum asphalt, 5 to 10 parts of apatite mineral powder, 3 to 10 parts of a cold-resistant agent and 3 to 7 parts of a polycarboxylic acid type water reducing agent. The cold-resistant agent comprises polyethylene glycol, polyacrylonitrile, polymethyl methacrylate and fluororubber, and the mass ratio of the polyethylene glycol to the polyacrylonitrile to the polymethyl methacrylate to the fluororubber is 1: 3: 5: 2. The raw material premixing method comprises the following steps: (1) preparing the raw materials; (2) preheating petroleum asphalt and apatite mineral powder, and premixing the preheated petroleum asphalt and apatite mineral powder with cement to obtain a mixture; and (3) cooling the mixture, adding the fly ash, the gravel, the cold-resistant agent and the polycarboxylic acid water reducing agent, carrying out secondary stirring, cooling to room temperature, and bagging. The prepared asphalt concrete has an excellent freeze-thaw resisting effect.
本发明公开了一种严寒地区的沥青混凝土，涉及建筑材料技术领域。其中沥青混凝土，以重量份计，包括以下原料：水泥：60份‑80份，粉煤灰：15份‑30份，碎石：10份‑20份，石油沥青：8份‑12份，磷灰石矿粉：5份‑10份，抗寒剂：3份‑10份，聚羧酸系减水剂：3份‑7份；其中抗寒剂包括聚乙二醇、聚丙烯腈、聚甲基丙烯酸甲酯及氟橡胶，其中四者之间的质量比为1：3：5：2。其中原料预混合方法如下：(1)准备上述原料；(2)将石油沥青、磷灰石矿粉进行预热，预热后与水泥进行预混合，得到混合剂；(3)将上述混合剂降温，加入粉煤灰、碎石、抗寒剂及聚羧酸系减水剂进行二次搅拌，冷却至室温，装袋，即可。制备的沥青混凝土具有优异的抗冻融效果。
The invention discloses asphalt concrete for severe cold areas, and relates to the technical field of building materials. The asphalt concrete is prepared from the following raw materials in parts by weight: 60 to 80 parts of cement, 15 to 30 parts of fly ash, 10 to 20 parts of gravel, 8 to 12 parts of petroleum asphalt, 5 to 10 parts of apatite mineral powder, 3 to 10 parts of a cold-resistant agent and 3 to 7 parts of a polycarboxylic acid type water reducing agent. The cold-resistant agent comprises polyethylene glycol, polyacrylonitrile, polymethyl methacrylate and fluororubber, and the mass ratio of the polyethylene glycol to the polyacrylonitrile to the polymethyl methacrylate to the fluororubber is 1: 3: 5: 2. The raw material premixing method comprises the following steps: (1) preparing the raw materials; (2) preheating petroleum asphalt and apatite mineral powder, and premixing the preheated petroleum asphalt and apatite mineral powder with cement to obtain a mixture; and (3) cooling the mixture, adding the fly ash, the gravel, the cold-resistant agent and the polycarboxylic acid water reducing agent, carrying out secondary stirring, cooling to room temperature, and bagging. The prepared asphalt concrete has an excellent freeze-thaw resisting effect.
本发明公开了一种严寒地区的沥青混凝土，涉及建筑材料技术领域。其中沥青混凝土，以重量份计，包括以下原料：水泥：60份‑80份，粉煤灰：15份‑30份，碎石：10份‑20份，石油沥青：8份‑12份，磷灰石矿粉：5份‑10份，抗寒剂：3份‑10份，聚羧酸系减水剂：3份‑7份；其中抗寒剂包括聚乙二醇、聚丙烯腈、聚甲基丙烯酸甲酯及氟橡胶，其中四者之间的质量比为1：3：5：2。其中原料预混合方法如下：(1)准备上述原料；(2)将石油沥青、磷灰石矿粉进行预热，预热后与水泥进行预混合，得到混合剂；(3)将上述混合剂降温，加入粉煤灰、碎石、抗寒剂及聚羧酸系减水剂进行二次搅拌，冷却至室温，装袋，即可。制备的沥青混凝土具有优异的抗冻融效果。
Asphalt concrete for severe cold areas
一种严寒地区的沥青混凝土
CHEN SUFEN (Autor:in)
29.10.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| NTIS | 1972
Impermeable concrete suitable for severe cold areas and preparation method thereof
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Cold-Mix Asphalt Concrete Surfacing
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