A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High-temperature-resistant ultra-high-performance concrete and preparation method thereof
The invention relates to the technical field of building materials, and particularly discloses high-temperature-resistant ultra-high-performance concrete and a preparation method thereof. The high-temperature-resistant ultra-high-performance concrete is prepared from the following raw materials: a cementing material, a composite heat-stable aggregate, a hydration product modifier, a nano functional material, multifunctional composite fibers, steel fibers, a water reducing agent and water in a mass ratio of (800-1000): (900-1100): (50-100): (1-2): (1-2): (78-156): (10-20): (160-180). The composite thermal stable aggregate is composed of the following five aggregates: 35 to 50% of basalt machine-made sand with a particle size of 1.18 to 2.36 mm, 5 to 10% of waste aerated concrete particles with a particle size of 0.6 to 1.18 mm, 35 to 50% of modified steel slag particles with a particle size of 0.3 to 1.18 mm, 5 to 10% of alumina hollow spheres with a particle size of 0.075 to 0.3 mm, and 5 to 10% of hollow glass beads with a particle size of 0.075 to 0.15 mm. The modified steel slag particles are prepared by coating aggregate modification liquid with steel slag, and the aggregate modification liquid is one or a combination of more of monopotassium phosphate, sodium dihydrogen phosphate and ammonium dihydrogen phosphate. The fiber mixing amount can be reduced, high-cost synthetic organic fibers are avoided, meanwhile, solid wastes in various industries are fully utilized, the prepared concrete has good high-temperature explosion-proof performance, mechanical strength and other performance, the preparation process is simple, and the maintenance mode is convenient and fast.
本申请涉及于建筑材料技术领域，具体公开了一种耐高温超高性能混凝土及其制备方法。其中，耐高温超高性能混凝土原料由包括质量比为(800～1000)：(900～1100)：(50～100)：(1～2)：(1～2)：(78～156)：(10～20)：(160～180)的胶凝材料、复合热稳定骨料、水化产物改性剂、纳米功能材料、多功能复合纤维、钢纤维、减水剂和水组成；所述复合热稳定骨料由包括如下五种骨料组成：1.18～2.36mm玄武岩机制砂35～50％0.6～1.18mm废加气混凝土颗粒5～10％0.3～1.18mm改性钢渣颗粒35～50％0.075～0.3mm氧化铝空心球5～10％0.075～0.15mm空心玻璃微珠5～10％；所述改性钢渣颗粒由钢渣包覆骨料改性液制得，所述骨料改性液为磷酸二氢钾、磷酸二氢钠、磷酸二氢铵中的一种或多种组合。本申请可以减少纤维掺量并避免使用造价昂贵的合成有机纤维，同时充分利用各行业固体废弃物，制备得到的混凝土具有良好的高温防爆、力学强度等性能，且制备工艺简单，养护方式便捷。
High-temperature-resistant ultra-high-performance concrete and preparation method thereof
The invention relates to the technical field of building materials, and particularly discloses high-temperature-resistant ultra-high-performance concrete and a preparation method thereof. The high-temperature-resistant ultra-high-performance concrete is prepared from the following raw materials: a cementing material, a composite heat-stable aggregate, a hydration product modifier, a nano functional material, multifunctional composite fibers, steel fibers, a water reducing agent and water in a mass ratio of (800-1000): (900-1100): (50-100): (1-2): (1-2): (78-156): (10-20): (160-180). The composite thermal stable aggregate is composed of the following five aggregates: 35 to 50% of basalt machine-made sand with a particle size of 1.18 to 2.36 mm, 5 to 10% of waste aerated concrete particles with a particle size of 0.6 to 1.18 mm, 35 to 50% of modified steel slag particles with a particle size of 0.3 to 1.18 mm, 5 to 10% of alumina hollow spheres with a particle size of 0.075 to 0.3 mm, and 5 to 10% of hollow glass beads with a particle size of 0.075 to 0.15 mm. The modified steel slag particles are prepared by coating aggregate modification liquid with steel slag, and the aggregate modification liquid is one or a combination of more of monopotassium phosphate, sodium dihydrogen phosphate and ammonium dihydrogen phosphate. The fiber mixing amount can be reduced, high-cost synthetic organic fibers are avoided, meanwhile, solid wastes in various industries are fully utilized, the prepared concrete has good high-temperature explosion-proof performance, mechanical strength and other performance, the preparation process is simple, and the maintenance mode is convenient and fast.
本申请涉及于建筑材料技术领域，具体公开了一种耐高温超高性能混凝土及其制备方法。其中，耐高温超高性能混凝土原料由包括质量比为(800～1000)：(900～1100)：(50～100)：(1～2)：(1～2)：(78～156)：(10～20)：(160～180)的胶凝材料、复合热稳定骨料、水化产物改性剂、纳米功能材料、多功能复合纤维、钢纤维、减水剂和水组成；所述复合热稳定骨料由包括如下五种骨料组成：1.18～2.36mm玄武岩机制砂35～50％0.6～1.18mm废加气混凝土颗粒5～10％0.3～1.18mm改性钢渣颗粒35～50％0.075～0.3mm氧化铝空心球5～10％0.075～0.15mm空心玻璃微珠5～10％；所述改性钢渣颗粒由钢渣包覆骨料改性液制得，所述骨料改性液为磷酸二氢钾、磷酸二氢钠、磷酸二氢铵中的一种或多种组合。本申请可以减少纤维掺量并避免使用造价昂贵的合成有机纤维，同时充分利用各行业固体废弃物，制备得到的混凝土具有良好的高温防爆、力学强度等性能，且制备工艺简单，养护方式便捷。
High-temperature-resistant ultra-high-performance concrete and preparation method thereof
一种耐高温超高性能混凝土及其制备方法
HAN FANGYU (author) / JI XUPING (author) / TANG JINHUI (author) / ZHENG XIAOBO (author) / SHA JIANFANG (author) / DU JIAWEI (author) / LIU JIANZHONG (author) / LIU JIAPING (author)
2024-07-12
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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