A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Low-shrinkage creep wet joint ultrahigh-strength concrete material and preparation method thereof
The invention relates to a low-shrinkage creep wet joint ultrahigh-strength concrete material and a preparation method thereof. The material comprises the following raw materials in proportion: 550kg/m<3> to 650kg/m<3> of cement, 150kg/m<3> to 250kg/m<3> of a mineral admixture, 675kg/m<3> to 825kg/m<3> of fine aggregate, 575kg/m<3>-725kg/m<3> of coarse aggregate, 10.3kg/m<3>-12.2kg/m<3> of a waterreducing agent, 78kg/m<3> to 156kg/m<3> of steel fibers, and 152kg/m<3> to 172kg/m<3> of water, wherein the mineral admixture is composed of an expanding agent and at least two of silica fume, superfine mineral powder, limestone powder, rice hull ash, metakaolin and fly ash microspheres, the coarse aggregate is any one or more of basalt, granite and diabase, the particle size is 5-10mm, and the needle sheet shape content is smaller than or equal to 1%. The low-shrinkage creep wet joint ultrahigh-strength concrete material prepared from the raw materials has the advantages of low shrinkage creep, good working performance, excellent mechanical properties, excellent durability and the like, is used for bridge wet joints, and can reduce the influence of shrinkage creep, guarantee the later durability and prolong the service life of bridges.
本申请涉及一种低收缩徐变湿接缝超高强混凝土材料及其制备方法，该材料包括下述配比的原材料：水泥550kg/m～650kg/m；矿物掺合料150kg/m～250kg/m；细骨料675kg/m～825kg/m；粗骨料575kg/m～725kg/m；减水剂10.3kg/m～12.2kg/m；钢纤维78kg/m～156kg/m；水152kg/m～172kg/m；其中，矿物掺合料由膨胀剂与硅灰、超细矿粉、石灰石粉、稻壳灰、偏高岭土、粉煤灰微珠中的至少两种组成，粗骨料为玄武岩、花岗岩、辉绿岩中的任意一种或几种，粒径为5‑10mm，针片状含量≤1％。采用上述原材料配制的低收缩徐变湿接缝超高强混凝土材料具有低收缩徐变、良好的工作性能、优异的力学性能和耐久性能等优点，用于桥梁湿接缝，可降低收缩徐变影响，保障后期耐久性能，提高桥梁的使用寿命。
Low-shrinkage creep wet joint ultrahigh-strength concrete material and preparation method thereof
The invention relates to a low-shrinkage creep wet joint ultrahigh-strength concrete material and a preparation method thereof. The material comprises the following raw materials in proportion: 550kg/m<3> to 650kg/m<3> of cement, 150kg/m<3> to 250kg/m<3> of a mineral admixture, 675kg/m<3> to 825kg/m<3> of fine aggregate, 575kg/m<3>-725kg/m<3> of coarse aggregate, 10.3kg/m<3>-12.2kg/m<3> of a waterreducing agent, 78kg/m<3> to 156kg/m<3> of steel fibers, and 152kg/m<3> to 172kg/m<3> of water, wherein the mineral admixture is composed of an expanding agent and at least two of silica fume, superfine mineral powder, limestone powder, rice hull ash, metakaolin and fly ash microspheres, the coarse aggregate is any one or more of basalt, granite and diabase, the particle size is 5-10mm, and the needle sheet shape content is smaller than or equal to 1%. The low-shrinkage creep wet joint ultrahigh-strength concrete material prepared from the raw materials has the advantages of low shrinkage creep, good working performance, excellent mechanical properties, excellent durability and the like, is used for bridge wet joints, and can reduce the influence of shrinkage creep, guarantee the later durability and prolong the service life of bridges.
本申请涉及一种低收缩徐变湿接缝超高强混凝土材料及其制备方法，该材料包括下述配比的原材料：水泥550kg/m～650kg/m；矿物掺合料150kg/m～250kg/m；细骨料675kg/m～825kg/m；粗骨料575kg/m～725kg/m；减水剂10.3kg/m～12.2kg/m；钢纤维78kg/m～156kg/m；水152kg/m～172kg/m；其中，矿物掺合料由膨胀剂与硅灰、超细矿粉、石灰石粉、稻壳灰、偏高岭土、粉煤灰微珠中的至少两种组成，粗骨料为玄武岩、花岗岩、辉绿岩中的任意一种或几种，粒径为5‑10mm，针片状含量≤1％。采用上述原材料配制的低收缩徐变湿接缝超高强混凝土材料具有低收缩徐变、良好的工作性能、优异的力学性能和耐久性能等优点，用于桥梁湿接缝，可降低收缩徐变影响，保障后期耐久性能，提高桥梁的使用寿命。
Low-shrinkage creep wet joint ultrahigh-strength concrete material and preparation method thereof
一种低收缩徐变湿接缝超高强混凝土材料及其制备方法
CHEN LUYI (author) / LI XIN (author) / HUANG YOUQIANG (author) / ZHANG ZHIHAO (author) / ZHENG LI (author) / WANG YAZHOU (author)
2020-06-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Ultrahigh-strength shrinkage-free grouting material and preparation method thereof
| European Patent Office | 2022
Low-shrinkage low-viscosity ultrahigh-strength concrete and preparation method thereof
| European Patent Office | 2021
Shrinkage-free ultrahigh-strength regenerated grouting material and preparation method thereof
| European Patent Office | 2021
Low-shrinkage, low-viscosity and ultrahigh-strength concrete and preparation method thereof
| European Patent Office | 2021
Shrinkage-resistant ultrahigh-toughness concrete and preparation method thereof
| European Patent Office | 2022