Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Low-carbon C130-C140 ultra-high performance self-compacting concrete containing coarse aggregate
The invention discloses low-carbon C130-C140 ultra-high-performance self-compacting concrete containing coarse aggregates. Each cubic meter of the concrete is prepared from the following components by weight: 275 to 330 kg of cement, 178.5 to 220 kg of fly ash microbeads, 119 to 180 kg of superfine mineral powder, 52.5 to 110 kg of superfine limestone powder, 695 to 740 kg of 0 to 5 mm fine aggregates, 376 to 396 kg of 5 to 10 mm coarse aggregates, 564 to 594 kg of 10 to 16 mm coarse aggregates, 7 to 12 kg of polycarboxylate superplasticizer and 105 to 110 kg of water, and the total volume weight of the concrete is 2490 to 2520 kg/m < 3 >. Under standard curing, the highest strength is 154.7 MPa in 56 days and 161.6 MPa in 90 days, the rewinding emptying time is 4-8 s, the T500 flow rate is 4-10 s, the self-compacting filling property is higher than the grade II, the adiabatic temperature rise is not higher than 67 DEG C, the self-shrinkage rate in 7 days is not higher than 0.09%, the chloride ion electric flux in 56 days is not higher than 100 coulomb, the sulfate attack resistance reaches KS240 or higher, the construction viscosity can be comparable with that of common C50 concrete, and the concrete has good application prospects. The comprehensive performance and the cost of the concrete are obviously superior to those of the same-grade steel fiber-doped UHPC, and the concrete has wide application value in the fields of offshore wind power and land wind power.
本发明公开了一种含粗骨料的低碳型C130～C140超高性能自密实混凝土，每立方混凝土包括以下重量组分：水泥275～330kg，粉煤灰微珠178.5～220kg，超细矿粉119～180kg，超细石灰石粉52.5～110kg，0～5mm细骨料695～740kg，5～10mm粗骨料376～396kg，10～16mm粗骨料564～594kg，聚羧酸减水剂7～12kg，水105～110kg，混凝土总容重为2490～2520kg/m3。本发明标养下最高强度56天154.7MPa和90天161.6MPa、倒筒排空时间4～8s、T500流速4～10s、自密实填充性Ⅱ级以上、绝热温升不大于67℃、7天自收缩率不大于0.09％、56天氯离子电通量不大于100库仑、抗硫酸盐侵蚀能力达KS240以上、施工粘度可与普通C50混凝土媲美，混凝土综合性能及成本明显优于同级别掺钢纤维UHPC，在海上风电与陆上风电领域均具有广阔的应用价值。
Low-carbon C130-C140 ultra-high performance self-compacting concrete containing coarse aggregate
The invention discloses low-carbon C130-C140 ultra-high-performance self-compacting concrete containing coarse aggregates. Each cubic meter of the concrete is prepared from the following components by weight: 275 to 330 kg of cement, 178.5 to 220 kg of fly ash microbeads, 119 to 180 kg of superfine mineral powder, 52.5 to 110 kg of superfine limestone powder, 695 to 740 kg of 0 to 5 mm fine aggregates, 376 to 396 kg of 5 to 10 mm coarse aggregates, 564 to 594 kg of 10 to 16 mm coarse aggregates, 7 to 12 kg of polycarboxylate superplasticizer and 105 to 110 kg of water, and the total volume weight of the concrete is 2490 to 2520 kg/m < 3 >. Under standard curing, the highest strength is 154.7 MPa in 56 days and 161.6 MPa in 90 days, the rewinding emptying time is 4-8 s, the T500 flow rate is 4-10 s, the self-compacting filling property is higher than the grade II, the adiabatic temperature rise is not higher than 67 DEG C, the self-shrinkage rate in 7 days is not higher than 0.09%, the chloride ion electric flux in 56 days is not higher than 100 coulomb, the sulfate attack resistance reaches KS240 or higher, the construction viscosity can be comparable with that of common C50 concrete, and the concrete has good application prospects. The comprehensive performance and the cost of the concrete are obviously superior to those of the same-grade steel fiber-doped UHPC, and the concrete has wide application value in the fields of offshore wind power and land wind power.
本发明公开了一种含粗骨料的低碳型C130～C140超高性能自密实混凝土，每立方混凝土包括以下重量组分：水泥275～330kg，粉煤灰微珠178.5～220kg，超细矿粉119～180kg，超细石灰石粉52.5～110kg，0～5mm细骨料695～740kg，5～10mm粗骨料376～396kg，10～16mm粗骨料564～594kg，聚羧酸减水剂7～12kg，水105～110kg，混凝土总容重为2490～2520kg/m3。本发明标养下最高强度56天154.7MPa和90天161.6MPa、倒筒排空时间4～8s、T500流速4～10s、自密实填充性Ⅱ级以上、绝热温升不大于67℃、7天自收缩率不大于0.09％、56天氯离子电通量不大于100库仑、抗硫酸盐侵蚀能力达KS240以上、施工粘度可与普通C50混凝土媲美，混凝土综合性能及成本明显优于同级别掺钢纤维UHPC，在海上风电与陆上风电领域均具有广阔的应用价值。
Low-carbon C130-C140 ultra-high performance self-compacting concrete containing coarse aggregate
含粗骨料的低碳型C130~C140超高性能自密实混凝土
WANG JUN (Autor:in) / LIU XIAOFENG (Autor:in) / ZOU LIBING (Autor:in) / ZHANG QIYING (Autor:in) / CHEN FAQIAO (Autor:in) / CHEN ZHENSHAN (Autor:in) / YU HUI (Autor:in)
04.03.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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