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A platform for research: civil engineering, architecture and urbanism
High-strength concrete prepared from river pebbles
The invention discloses high-strength concrete prepared from river pebbles, and belongs to the technical field of concrete, and the high-strength concrete comprises the following components: 520-600 Kg/m of a cementing material, 130-140 Kg/m of water, 660-760 Kg/m of sand, 960-1060 Kg/m of pebble gravel and an additive, the cementing material comprises 5-10% of fly ash, 8-20% of mineral powder, 5-10% of silica fume and the balance of cement; and the admixture accounts for 1.5-2.5% of the total amount of the cementing material. The river pebbles with particle size defects eliminated through crushing and shaping are adopted as coarse aggregates, the crushed and shaped pebbles are small in needle-sheet-shaped particle content and good in particle shape, the crushing value is smaller than 10%, reasonable accumulation of aggregates in concrete and reasonable stress distribution are facilitated, overall material particle grading distribution in the high-strength concrete tends to be more reasonable, and the strength of the high-strength concrete is improved. The working performance of a concrete mixture and the strength of concrete are improved, so that resources are saved, and the environment is protected.
本发明公开了一种应用河卵石制备的高强混凝土，属于混凝土技术领域，各组分及所占含量包括：胶凝材料520‑600 Kg/m³、水130‑140 Kg/m³、砂660‑760 Kg/m³、卵石碎石960‑1060 Kg/m³及外加剂；胶凝材料包括粉煤灰5%‑10%、矿粉8%‑20%、硅灰5%‑10%和余量为水泥；外加剂占所述胶凝材料总量的1.5‑2.5%。本发明通过采用破碎整形消除粒径缺陷的河卵石作粗骨料，破碎整形后的卵石碎石针片状颗粒含量小，粒形较好，压碎值小于10%，有利于混凝土中骨料合理堆积和应力合理分布，使得高强混凝土中总体材料颗粒级配分布趋于更加合理，有利于提高混凝土拌合物工作性能和混凝土强度，从而节约资源，保护环境。
High-strength concrete prepared from river pebbles
The invention discloses high-strength concrete prepared from river pebbles, and belongs to the technical field of concrete, and the high-strength concrete comprises the following components: 520-600 Kg/m of a cementing material, 130-140 Kg/m of water, 660-760 Kg/m of sand, 960-1060 Kg/m of pebble gravel and an additive, the cementing material comprises 5-10% of fly ash, 8-20% of mineral powder, 5-10% of silica fume and the balance of cement; and the admixture accounts for 1.5-2.5% of the total amount of the cementing material. The river pebbles with particle size defects eliminated through crushing and shaping are adopted as coarse aggregates, the crushed and shaped pebbles are small in needle-sheet-shaped particle content and good in particle shape, the crushing value is smaller than 10%, reasonable accumulation of aggregates in concrete and reasonable stress distribution are facilitated, overall material particle grading distribution in the high-strength concrete tends to be more reasonable, and the strength of the high-strength concrete is improved. The working performance of a concrete mixture and the strength of concrete are improved, so that resources are saved, and the environment is protected.
本发明公开了一种应用河卵石制备的高强混凝土，属于混凝土技术领域，各组分及所占含量包括：胶凝材料520‑600 Kg/m³、水130‑140 Kg/m³、砂660‑760 Kg/m³、卵石碎石960‑1060 Kg/m³及外加剂；胶凝材料包括粉煤灰5%‑10%、矿粉8%‑20%、硅灰5%‑10%和余量为水泥；外加剂占所述胶凝材料总量的1.5‑2.5%。本发明通过采用破碎整形消除粒径缺陷的河卵石作粗骨料，破碎整形后的卵石碎石针片状颗粒含量小，粒形较好，压碎值小于10%，有利于混凝土中骨料合理堆积和应力合理分布，使得高强混凝土中总体材料颗粒级配分布趋于更加合理，有利于提高混凝土拌合物工作性能和混凝土强度，从而节约资源，保护环境。
High-strength concrete prepared from river pebbles
应用河卵石制备的高强混凝土
GUO LIANZHU (author)
2022-03-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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