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A platform for research: civil engineering, architecture and urbanism
Preparation method of superfine composite modified limestone chipping concrete
The invention belongs to the technical field of building materials, and particularly relates to a preparation method of superfine composite modified limestone chipping concrete. The concrete comprisesthe following components, in parts by weight, 20-25 parts of cement, 15-20 parts of basalt micro-powder, 10-13 parts of slag micro-powder, 10-13 parts of limestone debris, 6-11 parts of lithium slag,and 20-25 parts of aggregate. The average particle size of the aggregate is 9-16 mm; and the water content in the cement is greater than 30%. Through double modification of mechanical force superfinegrinding and exciting of the modifier in the early-stage crushing process, the early activity and the later activity of the limestone debris, the slag micro-powder and the lithium slag are easily improved, a micro-expansion function is provided, the crack resistance of the concrete is enhanced, the overall fluidity of the concrete is significantly improved, and the concrete is easy to transport,not easy to cake, strong in workability, and not easy to separate and bleed.
本发明属于建筑材料技术领域，具体的说是一种超细复合改性石灰石粉混凝土制备方法，包括以下各重量份的组分：水泥20‑25份、玄武岩微粉15‑20份、矿渣微粉10‑13份、石灰石碎屑10‑13份、锂渣6‑11份、集料20‑25份；所述集料的平均粒径为9‑16mm；所述水泥中含水量大于30％；本发明通过前期粉碎过程中的机械力超细粉磨和激发改性剂的双重改性，不仅有利于石灰石碎屑、矿渣微粉和锂渣早期和后期活性的提高，同时使其具有微膨胀功能，增强了混凝土的抗裂能力，同时明显改善了混泥土的整体流动性，使其易于输送、不易结块、和易性强、不易离析泌水。
Preparation method of superfine composite modified limestone chipping concrete
The invention belongs to the technical field of building materials, and particularly relates to a preparation method of superfine composite modified limestone chipping concrete. The concrete comprisesthe following components, in parts by weight, 20-25 parts of cement, 15-20 parts of basalt micro-powder, 10-13 parts of slag micro-powder, 10-13 parts of limestone debris, 6-11 parts of lithium slag,and 20-25 parts of aggregate. The average particle size of the aggregate is 9-16 mm; and the water content in the cement is greater than 30%. Through double modification of mechanical force superfinegrinding and exciting of the modifier in the early-stage crushing process, the early activity and the later activity of the limestone debris, the slag micro-powder and the lithium slag are easily improved, a micro-expansion function is provided, the crack resistance of the concrete is enhanced, the overall fluidity of the concrete is significantly improved, and the concrete is easy to transport,not easy to cake, strong in workability, and not easy to separate and bleed.
本发明属于建筑材料技术领域，具体的说是一种超细复合改性石灰石粉混凝土制备方法，包括以下各重量份的组分：水泥20‑25份、玄武岩微粉15‑20份、矿渣微粉10‑13份、石灰石碎屑10‑13份、锂渣6‑11份、集料20‑25份；所述集料的平均粒径为9‑16mm；所述水泥中含水量大于30％；本发明通过前期粉碎过程中的机械力超细粉磨和激发改性剂的双重改性，不仅有利于石灰石碎屑、矿渣微粉和锂渣早期和后期活性的提高，同时使其具有微膨胀功能，增强了混凝土的抗裂能力，同时明显改善了混泥土的整体流动性，使其易于输送、不易结块、和易性强、不易离析泌水。
Preparation method of superfine composite modified limestone chipping concrete
一种超细复合改性石灰石碎屑混凝土制备方法
CHENG HUI (author) / CHEN QIANJUN (author) / FU CHUNLEI (author) / REN WENHAI (author) / ZHOU QIAO (author) / YANG YAN'AN (author) / XIN JIAN (author)
2020-05-26
Patent
Electronic Resource
Chinese
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