A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Superfluid steam-curing-free ultra-high performance concrete and preparation method thereof
The invention provides superfluid steam-curing-free ultra-high performance concrete and a preparation method thereof, the concrete comprises 20-35 parts of cement, 10-25 parts of slag, 3-5 parts of fly ash, 2-8 parts of silica fume, 1-3 parts of a graphene oxide dispersion liquid and 40-60 parts of river sand, and the concrete also comprises a composite admixture and steel fibers; the river sand with the particle size ranging from 0.15 mm to 1.18 mm is selected, cement, silica fume and the like are partially replaced with the granulated blast-furnace slag which is cured at the normal temperature and hydrated fast, the expansion degree meets the site construction requirement, and the construction performance is good; the steel fibers are directly mixed into the dry powder without on-site addition, and are directly stirred after being added with water, so that the fibers in the material are uniformly distributed and are not settled or agglomerated, and a matrix reaches a relatively dense state; the graphene oxide dispersion liquid is added, a crystal nucleus effect is achieved in hydration of cement particles, the hydration degree of the cement is improved, microscopic cracks are bridged, and the overall performance of the matrix is further improved.
本发明提供了一种超流态免蒸养超高性能混凝土及其制备方法，该混凝土包括20‑35份水泥、10‑25份矿渣、3‑5份粉煤灰、2‑8份硅灰、1‑3份氧化石墨烯分散液和40‑60份河砂，该混凝土还包括复合外加剂和钢纤维；本发明选用粒径在0.15mm‑1.18mm范围内的河砂，且用常温养护较快水化的粒化高炉矿渣来部分替换水泥及硅灰等，拓展度符合现场施工要求，施工性能良好；钢纤维直接混入干粉料中，无需现场添加，加水后直接搅拌，材料内部纤维分布均匀，无沉降或团聚，使基体达到较密实状态；添加氧化石墨烯分散液，在水泥颗粒的水化中起到晶核作用，提高水泥的水化程度，桥接微观裂缝，进一步提高基体的整体性能。
Superfluid steam-curing-free ultra-high performance concrete and preparation method thereof
The invention provides superfluid steam-curing-free ultra-high performance concrete and a preparation method thereof, the concrete comprises 20-35 parts of cement, 10-25 parts of slag, 3-5 parts of fly ash, 2-8 parts of silica fume, 1-3 parts of a graphene oxide dispersion liquid and 40-60 parts of river sand, and the concrete also comprises a composite admixture and steel fibers; the river sand with the particle size ranging from 0.15 mm to 1.18 mm is selected, cement, silica fume and the like are partially replaced with the granulated blast-furnace slag which is cured at the normal temperature and hydrated fast, the expansion degree meets the site construction requirement, and the construction performance is good; the steel fibers are directly mixed into the dry powder without on-site addition, and are directly stirred after being added with water, so that the fibers in the material are uniformly distributed and are not settled or agglomerated, and a matrix reaches a relatively dense state; the graphene oxide dispersion liquid is added, a crystal nucleus effect is achieved in hydration of cement particles, the hydration degree of the cement is improved, microscopic cracks are bridged, and the overall performance of the matrix is further improved.
本发明提供了一种超流态免蒸养超高性能混凝土及其制备方法，该混凝土包括20‑35份水泥、10‑25份矿渣、3‑5份粉煤灰、2‑8份硅灰、1‑3份氧化石墨烯分散液和40‑60份河砂，该混凝土还包括复合外加剂和钢纤维；本发明选用粒径在0.15mm‑1.18mm范围内的河砂，且用常温养护较快水化的粒化高炉矿渣来部分替换水泥及硅灰等，拓展度符合现场施工要求，施工性能良好；钢纤维直接混入干粉料中，无需现场添加，加水后直接搅拌，材料内部纤维分布均匀，无沉降或团聚，使基体达到较密实状态；添加氧化石墨烯分散液，在水泥颗粒的水化中起到晶核作用，提高水泥的水化程度，桥接微观裂缝，进一步提高基体的整体性能。
Superfluid steam-curing-free ultra-high performance concrete and preparation method thereof
超流态免蒸养超高性能混凝土及其制备方法
YANG TIEJUN (author) / MA BINGYANG (author) / ZHOU YOU (author) / WANG ZHEN (author) / WEI JINLONG (author)
2021-06-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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