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A platform for research: civil engineering, architecture and urbanism
Low-shrinkage high-crack-resistance ultra-high performance concrete and preparation method thereof
The invention discloses low-shrinkage high-crack-resistance ultra-high performance concrete and a preparation method thereof. The concrete is prepared from the following components in parts by weight: 400 to 500 parts of cement, 150 to 200 parts of silica fume, 400 to 500 parts of stone powder, 750 to 800 parts of fine sand, 200 to 250 parts of coarse sand, 150 to 180 parts of fiber, 33 to 40 parts of a water reducing agent, 190 to 200 parts of water and 40 to 60 parts of and expanding agent. The preparation method comprises the following steps: pouring cement, silica fume, stone powder and an expanding agent into a concrete stirring pot, and uniformly stirring; adding fine sand and coarse sand, and uniformly stirring; pouring 50% of water and a mixture of the residual water and a water reducing agent, and stirring until slurry is formed; continuously stirring the slurry, and slowly adding steel fibers; and pouring, vibrating and forming, covering the surface with a film, removing the mold after one day, and carrying out standard curing to obtain the low-shrinkage high-crack-resistance ultra-high performance concrete. The prepared low-shrinkage high-crack-resistance ultra-high performance concrete is good in working performance and simple in preparation method, reduces pollution, and further has good economic benefits and engineering application value.
本发明公开了一种低收缩高抗裂超高性能混凝土及其制备方法，该混凝土包括如下重量份的组分：水泥400～500份，硅灰150～200份，石粉400～500份，细砂750～800份，粗砂200～250份，纤维150～180份，减水剂33～40份，水190～200份，膨胀剂40～60份。制备方法为将水泥、硅灰、石粉、膨胀剂倒入混凝土搅拌锅中，搅拌均匀；再加入细砂和粗砂，搅拌均匀；倒入50％水以及剩余水和减水剂的混合物，搅拌直至形成浆体；将浆体继续搅拌，缓慢加入钢纤维；浇筑振捣成型，表面覆膜，1天后拆模进行标准养护，获得低收缩高抗裂超高性能混凝土。本发明制备的低收缩高抗裂超高性能混凝土工作性能好、制备方法简单、减少了污染，还具有良好的经济效益和工程应用价值。
Low-shrinkage high-crack-resistance ultra-high performance concrete and preparation method thereof
The invention discloses low-shrinkage high-crack-resistance ultra-high performance concrete and a preparation method thereof. The concrete is prepared from the following components in parts by weight: 400 to 500 parts of cement, 150 to 200 parts of silica fume, 400 to 500 parts of stone powder, 750 to 800 parts of fine sand, 200 to 250 parts of coarse sand, 150 to 180 parts of fiber, 33 to 40 parts of a water reducing agent, 190 to 200 parts of water and 40 to 60 parts of and expanding agent. The preparation method comprises the following steps: pouring cement, silica fume, stone powder and an expanding agent into a concrete stirring pot, and uniformly stirring; adding fine sand and coarse sand, and uniformly stirring; pouring 50% of water and a mixture of the residual water and a water reducing agent, and stirring until slurry is formed; continuously stirring the slurry, and slowly adding steel fibers; and pouring, vibrating and forming, covering the surface with a film, removing the mold after one day, and carrying out standard curing to obtain the low-shrinkage high-crack-resistance ultra-high performance concrete. The prepared low-shrinkage high-crack-resistance ultra-high performance concrete is good in working performance and simple in preparation method, reduces pollution, and further has good economic benefits and engineering application value.
本发明公开了一种低收缩高抗裂超高性能混凝土及其制备方法，该混凝土包括如下重量份的组分：水泥400～500份，硅灰150～200份，石粉400～500份，细砂750～800份，粗砂200～250份，纤维150～180份，减水剂33～40份，水190～200份，膨胀剂40～60份。制备方法为将水泥、硅灰、石粉、膨胀剂倒入混凝土搅拌锅中，搅拌均匀；再加入细砂和粗砂，搅拌均匀；倒入50％水以及剩余水和减水剂的混合物，搅拌直至形成浆体；将浆体继续搅拌，缓慢加入钢纤维；浇筑振捣成型，表面覆膜，1天后拆模进行标准养护，获得低收缩高抗裂超高性能混凝土。本发明制备的低收缩高抗裂超高性能混凝土工作性能好、制备方法简单、减少了污染，还具有良好的经济效益和工程应用价值。
Low-shrinkage high-crack-resistance ultra-high performance concrete and preparation method thereof
一种低收缩高抗裂超高性能混凝土及其制备方法
WANG WUFENG (author) / YANG HUANMIN (author) / XIA LIANGLIANG (author) / YU RUI (author) / ZHANG JINGJING (author)
2021-12-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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