Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ultra-high performance concrete based on internal curing of recycled fine aggregate and preparation method of ultra-high performance concrete
The invention discloses ultra-high performance concrete based on internal curing of recycled fine aggregate and a preparation method of the ultra-high performance concrete. The ultra-high performance concrete is prepared from the following components in parts by mass: 500 to 650 parts of ordinary Portland cement, 100 to 150 parts of fly ash, 150 to 250 parts of silica fume, 30 to 100 parts of hollow glass beads, 20 to 100 parts of regenerated fine powder, 120 to 360 parts of regenerated fine aggregate, 790 to 1030 parts of fine aggregate, 20 to 28 parts of a polycarboxylate superplasticizer and 170 to 190 parts of water, wherein the regenerated fine aggregate is subjected to water absorption saturation pretreatment. The ultra-high performance concrete further comprises steel fibers, and the steel fibers account for 1.5%-2.5% by volume of the ultra-high performance concrete. The obtained ultra-high performance concrete effectively reduces hydration heat and shrinkage, improves strength, has excellent mechanical properties, volume stability and durability, is simple in preparation method and construction process, is easy to operate, and has practical popularization and application values.
本发明公开了一种基于再生细集料内养护的超高性能混凝土及其制备方法。该超高性能混凝土按质量份数计，包括以下组分：普通硅酸盐水泥500～650份，粉煤灰100～150份，硅灰150～250份，空心玻璃微珠30～100份，再生细粉20～100份，再生细集料120～360份，细集料790～1030份，聚羧酸减水剂20～28份，水170～190份；其中再生细集料进行吸水饱和预处理；还包括钢纤维，按体积百分比计，钢纤维占超高性能混凝土的1.5～2.5％。所得超高性能混凝土有效降低了水化热和收缩，提高了强度，具有优异的力学性能、体积稳定性和耐久性，且制备方法和施工工艺简单，容易操作，具有实际推广应用价值。
Ultra-high performance concrete based on internal curing of recycled fine aggregate and preparation method of ultra-high performance concrete
The invention discloses ultra-high performance concrete based on internal curing of recycled fine aggregate and a preparation method of the ultra-high performance concrete. The ultra-high performance concrete is prepared from the following components in parts by mass: 500 to 650 parts of ordinary Portland cement, 100 to 150 parts of fly ash, 150 to 250 parts of silica fume, 30 to 100 parts of hollow glass beads, 20 to 100 parts of regenerated fine powder, 120 to 360 parts of regenerated fine aggregate, 790 to 1030 parts of fine aggregate, 20 to 28 parts of a polycarboxylate superplasticizer and 170 to 190 parts of water, wherein the regenerated fine aggregate is subjected to water absorption saturation pretreatment. The ultra-high performance concrete further comprises steel fibers, and the steel fibers account for 1.5%-2.5% by volume of the ultra-high performance concrete. The obtained ultra-high performance concrete effectively reduces hydration heat and shrinkage, improves strength, has excellent mechanical properties, volume stability and durability, is simple in preparation method and construction process, is easy to operate, and has practical popularization and application values.
本发明公开了一种基于再生细集料内养护的超高性能混凝土及其制备方法。该超高性能混凝土按质量份数计，包括以下组分：普通硅酸盐水泥500～650份，粉煤灰100～150份，硅灰150～250份，空心玻璃微珠30～100份，再生细粉20～100份，再生细集料120～360份，细集料790～1030份，聚羧酸减水剂20～28份，水170～190份；其中再生细集料进行吸水饱和预处理；还包括钢纤维，按体积百分比计，钢纤维占超高性能混凝土的1.5～2.5％。所得超高性能混凝土有效降低了水化热和收缩，提高了强度，具有优异的力学性能、体积稳定性和耐久性，且制备方法和施工工艺简单，容易操作，具有实际推广应用价值。
Ultra-high performance concrete based on internal curing of recycled fine aggregate and preparation method of ultra-high performance concrete
一种基于再生细骨料内养护的超高性能混凝土及其制备方法
CHENG SHUKAI (Autor:in) / CHEN XUYONG (Autor:in) / WU QIAOYUN (Autor:in) / CHENG ZIYANG (Autor:in) / WANG XIANGQING (Autor:in) / ZHANG DI (Autor:in) / XU XIONG (Autor:in)
21.12.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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