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A platform for research: civil engineering, architecture and urbanism
Limestone aggregate steel tube concrete
The invention relates to limestone aggregate concrete filled steel tube which specifically comprises 320-380 kg/m < 3 > of cement, 40-60 kg/m < 3 > of fly ash beads, 40-60 kg/m < 3 > of silica fume, 140-160 kg/m < 3 > of a superphosphorus shrinkage-resistant filling agent, 770-850 kg/m < 3 > of fine aggregate, 650-710 kg/m < 3 > of gravel, 180-220 kg/m < 3 > of ardealite aggregate, 150-170 kg/m < 3 > of water and 18-21 kg/m < 3 > of a special retarding-resistant dispersing agent. The internal curing effect of the limestone aggregate and the ardealite is utilized, the superphosphorus anti-shrinkage filling agent is combined to compensate shrinkage so as to improve the problem of large shrinkage of the high-performance concrete, and meanwhile, a premixing process is combined to promote slurry around the limestone sand to form a high-strength and compact C-S-H gel interface transition region, so that the porosity is reduced, and the performance of the concrete is improved. The mechanical property and the durability of the concrete are improved.
本发明涉及一种石灰石集料钢管混凝土，具体包括320‑380kg/m3的水泥，40‑60kg/m3的粉煤灰微珠，40‑60kg/m3的硅灰，140‑160kg/m3的过磷抗缩充盈剂，770‑850kg/m3的细集料，650‑710kg/m3的碎石，180‑220kg/m3的磷石膏集料，150‑170kg/m3的水和18‑21kg/m3专用抗缓凝分散剂。本发明利用石灰石集料和磷石膏的内养护作用，结合过磷抗缩充盈剂补偿收缩改善高性能混凝土收缩大的问题，同时结合预拌工艺促进石灰石砂周围浆体形成高强、致密的C‑S‑H凝胶界面过渡区，降低孔隙率，提高了混凝土的力学性能和耐久性能。
Limestone aggregate steel tube concrete
The invention relates to limestone aggregate concrete filled steel tube which specifically comprises 320-380 kg/m < 3 > of cement, 40-60 kg/m < 3 > of fly ash beads, 40-60 kg/m < 3 > of silica fume, 140-160 kg/m < 3 > of a superphosphorus shrinkage-resistant filling agent, 770-850 kg/m < 3 > of fine aggregate, 650-710 kg/m < 3 > of gravel, 180-220 kg/m < 3 > of ardealite aggregate, 150-170 kg/m < 3 > of water and 18-21 kg/m < 3 > of a special retarding-resistant dispersing agent. The internal curing effect of the limestone aggregate and the ardealite is utilized, the superphosphorus anti-shrinkage filling agent is combined to compensate shrinkage so as to improve the problem of large shrinkage of the high-performance concrete, and meanwhile, a premixing process is combined to promote slurry around the limestone sand to form a high-strength and compact C-S-H gel interface transition region, so that the porosity is reduced, and the performance of the concrete is improved. The mechanical property and the durability of the concrete are improved.
本发明涉及一种石灰石集料钢管混凝土，具体包括320‑380kg/m3的水泥，40‑60kg/m3的粉煤灰微珠，40‑60kg/m3的硅灰，140‑160kg/m3的过磷抗缩充盈剂，770‑850kg/m3的细集料，650‑710kg/m3的碎石，180‑220kg/m3的磷石膏集料，150‑170kg/m3的水和18‑21kg/m3专用抗缓凝分散剂。本发明利用石灰石集料和磷石膏的内养护作用，结合过磷抗缩充盈剂补偿收缩改善高性能混凝土收缩大的问题，同时结合预拌工艺促进石灰石砂周围浆体形成高强、致密的C‑S‑H凝胶界面过渡区，降低孔隙率，提高了混凝土的力学性能和耐久性能。
Limestone aggregate steel tube concrete
一种石灰石集料钢管混凝土
XIAO GUANGSHENG (author) / ZHANG SHIHAO (author) / LI JINHUI (author) / ZHANG LINQING (author) / DING QINGJUN (author) / ZHANG GONG (author) / XU WEI (author) / FANG MENGZHI (author) / ZHANG MINGRUI (author) / LIU XINCHAO (author)
2023-12-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Magnesian limestone aggregate in concrete
| TIBKAT | 1991
Limestone aggregate concrete, usefulness and durability
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Shear Strength of Reinforced Limestone Aggregate Concrete Beams
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