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Raw material for small-particle-size rock-fill concrete and preparation method of small-particle-size rock-fill concrete
The invention discloses a raw material for small-particle-size rock-fill concrete, the raw material comprises a rock-fill material and self-compacting concrete, the self-compacting concrete at least comprises the following components in parts by volume: 160-240 parts of water, 31-280 parts of cement, 0-220 parts of an admixture, 0-280 parts of a coarse aggregate, 200-500 parts of a fine aggregate, 0-20 parts of an additive and 0-40 parts of fiber; the slump expansion degree of the self-compacting concrete is 700-1000 mm, or the relative expansion area of the self-compacting concrete is 11-25, the V funnel passing time of the concrete is 3-18 s, the content of particles with the particle size of less than 150 mm in a rockfill material used by the small-particle-size rockfill concrete is not less than 5%, and the content of particles with the particle size of less than 50 mm in the rockfill material is not more than 5%. By utilizing the raw material for the small-particle-size rockfill concrete, the particle size control value of the rockfill material can be reduced to 50mm, and the ratio of the maximum particle size of the coarse aggregate of the self-compacting concrete to the particle size control value of the rockfill material is increased to 1/5, so that the raw material range of the rockfill material is expanded, and the utilization rate of the material is increased.
本申请公开了一种用于小粒径堆石混凝土的原料，包括堆石料和自密实混凝土，其中：所述自密实混凝土各组分以体积份数计至少包括：水：160‑240份、水泥：31‑280份、掺合料：0‑220份、粗骨料：0‑280份、细骨料：200‑500份、外加剂：0‑20份和纤维：0‑40份；所述自密实混凝土的坍落扩展度为700mm～1000mm，或所述自密实混凝土的相对扩展面积为11～25，混凝土V漏斗通过时间为3s～18s，小粒径堆石混凝土所使用的堆石料中150mm以下颗粒含量不小于5％，且所述堆石料中小于50mm的颗粒含量不多于5％。利用本申请提出的用于小粒径堆石混凝土的原料，能够将堆石料粒径控制值降低至50mm，将自密实混凝土粗骨料最大粒径与堆石料粒径控制值之比提高至1/5，从而扩大堆石料的原材范围，提高材料的利用率。
Raw material for small-particle-size rock-fill concrete and preparation method of small-particle-size rock-fill concrete
The invention discloses a raw material for small-particle-size rock-fill concrete, the raw material comprises a rock-fill material and self-compacting concrete, the self-compacting concrete at least comprises the following components in parts by volume: 160-240 parts of water, 31-280 parts of cement, 0-220 parts of an admixture, 0-280 parts of a coarse aggregate, 200-500 parts of a fine aggregate, 0-20 parts of an additive and 0-40 parts of fiber; the slump expansion degree of the self-compacting concrete is 700-1000 mm, or the relative expansion area of the self-compacting concrete is 11-25, the V funnel passing time of the concrete is 3-18 s, the content of particles with the particle size of less than 150 mm in a rockfill material used by the small-particle-size rockfill concrete is not less than 5%, and the content of particles with the particle size of less than 50 mm in the rockfill material is not more than 5%. By utilizing the raw material for the small-particle-size rockfill concrete, the particle size control value of the rockfill material can be reduced to 50mm, and the ratio of the maximum particle size of the coarse aggregate of the self-compacting concrete to the particle size control value of the rockfill material is increased to 1/5, so that the raw material range of the rockfill material is expanded, and the utilization rate of the material is increased.
本申请公开了一种用于小粒径堆石混凝土的原料，包括堆石料和自密实混凝土，其中：所述自密实混凝土各组分以体积份数计至少包括：水：160‑240份、水泥：31‑280份、掺合料：0‑220份、粗骨料：0‑280份、细骨料：200‑500份、外加剂：0‑20份和纤维：0‑40份；所述自密实混凝土的坍落扩展度为700mm～1000mm，或所述自密实混凝土的相对扩展面积为11～25，混凝土V漏斗通过时间为3s～18s，小粒径堆石混凝土所使用的堆石料中150mm以下颗粒含量不小于5％，且所述堆石料中小于50mm的颗粒含量不多于5％。利用本申请提出的用于小粒径堆石混凝土的原料，能够将堆石料粒径控制值降低至50mm，将自密实混凝土粗骨料最大粒径与堆石料粒径控制值之比提高至1/5，从而扩大堆石料的原材范围，提高材料的利用率。
Raw material for small-particle-size rock-fill concrete and preparation method of small-particle-size rock-fill concrete
用于小粒径堆石混凝土的原料及小粒径堆石混凝土的制备方法
LUO XIN (author) / XIA FEI (author) / LI FENGLIANG (author) / BI ZHONGMING (author) / WAN PENG (author)
2024-02-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024
| Engineering Index Backfile | 1903