Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ultra-high performance concrete containing graphite tailing fine aggregate and preparation method thereof
The invention provides ultra-high performance concrete containing graphite tailing fine aggregate and a preparation method of the ultra-high performance concrete, and relates to the technical field of concrete. The concrete comprises the following components in parts by weight: 7.8-9.3 parts of water, a cementing material, fine aggregate, 1.5 parts of a water reducing agent and 4.2 parts of steel fibers, the cementing material comprises 34 parts of cement, 9.7 parts of silica fume and 4.9 parts of fly ash; the fine aggregate comprises graphite tailings and river sand; the graphite tailings comprise 2.2-8.8 parts of medium-particle-size graphite tailings and 1.5-6.2 parts of fine-particle-size graphite tailings; the river sand comprises 14.2 to 21.3 parts of large-particle-size river sand, 6.1 to 9.1 parts of medium-particle-size river sand and 2.2 to 3.3 parts of fine-particle-size river sand. The graphite tailings are used as raw materials, river sand is optimized and replaced according to mineral composition and morphological characteristics of the graphite tailings, the internal microstructure of the material is optimized, the mechanical strength and performance of the material are improved, and the problems of accumulation, pollution and the like of the graphite tailings are solved.
本发明提供了一种含石墨尾矿细骨料的超高性能混凝土及其制备方法，涉及混凝土技术领域。该混凝土按照重量份计包括如下组分：7.8～9.3份水、胶凝材料、细骨料、1.5份减水剂和4.2份钢纤维；胶凝材料包括34份水泥、9.7份硅灰和4.9份粉煤灰；细骨料包括石墨尾矿和河砂；石墨尾矿包括2.2～8.8份中粒径石墨尾矿和1.5～6.2份细粒径石墨尾矿；河砂包括14.2～21.3份粗粒径河砂、6.1～9.1份中粒径河砂和2.2～3.3份细粒径河砂。本发明以石墨尾矿为原料，根据其矿物组成和形貌特征优化替代河砂，优化材料内部微观结构，提升材料的力学强度和性能，解决石墨尾矿堆积和污染等问题。
Ultra-high performance concrete containing graphite tailing fine aggregate and preparation method thereof
The invention provides ultra-high performance concrete containing graphite tailing fine aggregate and a preparation method of the ultra-high performance concrete, and relates to the technical field of concrete. The concrete comprises the following components in parts by weight: 7.8-9.3 parts of water, a cementing material, fine aggregate, 1.5 parts of a water reducing agent and 4.2 parts of steel fibers, the cementing material comprises 34 parts of cement, 9.7 parts of silica fume and 4.9 parts of fly ash; the fine aggregate comprises graphite tailings and river sand; the graphite tailings comprise 2.2-8.8 parts of medium-particle-size graphite tailings and 1.5-6.2 parts of fine-particle-size graphite tailings; the river sand comprises 14.2 to 21.3 parts of large-particle-size river sand, 6.1 to 9.1 parts of medium-particle-size river sand and 2.2 to 3.3 parts of fine-particle-size river sand. The graphite tailings are used as raw materials, river sand is optimized and replaced according to mineral composition and morphological characteristics of the graphite tailings, the internal microstructure of the material is optimized, the mechanical strength and performance of the material are improved, and the problems of accumulation, pollution and the like of the graphite tailings are solved.
本发明提供了一种含石墨尾矿细骨料的超高性能混凝土及其制备方法，涉及混凝土技术领域。该混凝土按照重量份计包括如下组分：7.8～9.3份水、胶凝材料、细骨料、1.5份减水剂和4.2份钢纤维；胶凝材料包括34份水泥、9.7份硅灰和4.9份粉煤灰；细骨料包括石墨尾矿和河砂；石墨尾矿包括2.2～8.8份中粒径石墨尾矿和1.5～6.2份细粒径石墨尾矿；河砂包括14.2～21.3份粗粒径河砂、6.1～9.1份中粒径河砂和2.2～3.3份细粒径河砂。本发明以石墨尾矿为原料，根据其矿物组成和形貌特征优化替代河砂，优化材料内部微观结构，提升材料的力学强度和性能，解决石墨尾矿堆积和污染等问题。
Ultra-high performance concrete containing graphite tailing fine aggregate and preparation method thereof
一种含石墨尾矿细骨料的超高性能混凝土及其制备方法
LI KAIHANG (Autor:in) / LI BEN (Autor:in) / MAO JIZE (Autor:in) / ZHAO CANHAO (Autor:in) / CHEN ZENGJIN (Autor:in) / TANG XIAOHONG (Autor:in)
10.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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