A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Large-volume self-compacting concrete
The invention relates to the technical field of concrete engineering. Raw materials of large-volume self-compacting concrete comprise a cementing material, aggregate, an expanding agent and an additive, the cementing material comprises cement, fly ash and mineral powder, the aggregate comprises fine aggregate and coarse aggregate, and the additive comprises a water reducing agent; the raw materials comprise 289-329 kg/m < 3 > of cement, 49-67 kg/m < 3 > of fly ash, 40-62 kg/m < 3 > of mineral powder, 719-909 kg/m < 3 > of fine aggregate, 839-1079 kg/m < 3 > of coarse aggregate, 25-29 kg/m < 3 > of expanding agent and 10-11 kg/m < 3 > of additive; zone II sand is selected as the fine aggregate, the coarse aggregate is formed by two-stage matching of pebbles with the particle size of 5-10 mm and pebbles with the particle size of 10-20 mm, and a Sika polyhydroxy acid high-performance water reducing agent with the water reducing rate of 28% is selected as the water reducing agent. According to the scheme, the self-compacting requirement of the concrete is met by adding the additive and adopting the low-hydration-heat self-compacting concrete, and the engineering construction quality can be more effectively controlled in a steel bar dense project.
本专利申请涉及混凝土工程技术领域，大体积自密实混凝土原材料料包括胶凝材料、骨料、膨胀剂及外加剂；胶凝材料包括水泥、粉煤灰和矿粉，骨料包括细骨料和粗骨料，外加剂包括减水剂；所述原材料的质量配比按单位kg/m3为：水泥289‑329，粉煤灰49‑67，矿粉40‑62，细骨料719‑909，粗骨料839‑1079，膨胀剂25‑29，外加剂10‑11；所述细骨料选用II区砂，所述粗骨料为粒径5‑10mm小石子和10‑20mm石子两级搭配而成，减水剂选用减水率为28％的西卡聚羟酸高性能减水剂。本方案通过增加外加剂等采用低水化热的自密实混凝土，达到混凝土的自密实要求，钢筋较密工程能够更有效的控制工程施工质量。
Large-volume self-compacting concrete
The invention relates to the technical field of concrete engineering. Raw materials of large-volume self-compacting concrete comprise a cementing material, aggregate, an expanding agent and an additive, the cementing material comprises cement, fly ash and mineral powder, the aggregate comprises fine aggregate and coarse aggregate, and the additive comprises a water reducing agent; the raw materials comprise 289-329 kg/m < 3 > of cement, 49-67 kg/m < 3 > of fly ash, 40-62 kg/m < 3 > of mineral powder, 719-909 kg/m < 3 > of fine aggregate, 839-1079 kg/m < 3 > of coarse aggregate, 25-29 kg/m < 3 > of expanding agent and 10-11 kg/m < 3 > of additive; zone II sand is selected as the fine aggregate, the coarse aggregate is formed by two-stage matching of pebbles with the particle size of 5-10 mm and pebbles with the particle size of 10-20 mm, and a Sika polyhydroxy acid high-performance water reducing agent with the water reducing rate of 28% is selected as the water reducing agent. According to the scheme, the self-compacting requirement of the concrete is met by adding the additive and adopting the low-hydration-heat self-compacting concrete, and the engineering construction quality can be more effectively controlled in a steel bar dense project.
本专利申请涉及混凝土工程技术领域，大体积自密实混凝土原材料料包括胶凝材料、骨料、膨胀剂及外加剂；胶凝材料包括水泥、粉煤灰和矿粉，骨料包括细骨料和粗骨料，外加剂包括减水剂；所述原材料的质量配比按单位kg/m3为：水泥289‑329，粉煤灰49‑67，矿粉40‑62，细骨料719‑909，粗骨料839‑1079，膨胀剂25‑29，外加剂10‑11；所述细骨料选用II区砂，所述粗骨料为粒径5‑10mm小石子和10‑20mm石子两级搭配而成，减水剂选用减水率为28％的西卡聚羟酸高性能减水剂。本方案通过增加外加剂等采用低水化热的自密实混凝土，达到混凝土的自密实要求，钢筋较密工程能够更有效的控制工程施工质量。
Large-volume self-compacting concrete
大体积自密实混凝土
CHEN LIANG (author) / FAN XIAOLIANG (author) / FANG LIANG (author) / LIU YI (author) / WANG HAIFANG (author) / CHEN HAO (author) / SUN LIBING (author) / CAO YIN (author)
2022-03-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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