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A platform for research: civil engineering, architecture and urbanism
Self-compacting micro-expansive concrete as well as preparation method and application thereof
The invention relates to self-compacting micro-expansive concrete as well as a preparation method and application thereof, and belongs to the field of concrete preparation. The self-compacting micro-expansion concrete is prepared from the following components in parts by weight: 445 to 490 parts of cement, 820 to 920 parts of coarse aggregate, 750 to 860 parts of fine aggregate, 65 to 78 parts offly ash, 45 to 60 parts of silica fume, 13.6 to 19.2 parts of a water reducing agent, 50 to 68 parts of calcium oxide and 135 to 165 parts of water, wherein the water-binder ratio is controlled to be0.25 to 0.26; the sand rate is controlled to be 0.45 to 0.50; the water/cement ratio is 0.32 to 0.34; the silica fume accounts for 8%-9% of the total amount of all the cementing materials; and the flyash accounts for 13-14% of the total amount of all the cementing materials. The concrete provided by the invention has excellent workability, pumping performance and compressive strength, and also has the characteristic of self-compaction shrinkage compensation.
本发明涉及自密实微膨胀混凝土及其制备方法和应用，属于混凝土制备领域。自密实微膨胀混凝土，由以下重量份的组份组成：水泥445‑490份、粗骨料820‑920份、细骨料750‑860份、粉煤灰65‑78份、硅灰45‑60份、减水剂13.6‑19.2份、氧化钙50‑68份和水135‑165份；其中，水胶比控制为0.25‑0.26；砂率控制为0.45‑0.50；水灰比为0.32‑0.34；硅灰占所有胶凝材料总量的8％‑9％；粉煤灰占所有胶凝材料总量的13％‑14％。本发明混凝土具有优异的工作性、泵送性能和抗压强度，同时具有自密实补偿收缩特征。
Self-compacting micro-expansive concrete as well as preparation method and application thereof
The invention relates to self-compacting micro-expansive concrete as well as a preparation method and application thereof, and belongs to the field of concrete preparation. The self-compacting micro-expansion concrete is prepared from the following components in parts by weight: 445 to 490 parts of cement, 820 to 920 parts of coarse aggregate, 750 to 860 parts of fine aggregate, 65 to 78 parts offly ash, 45 to 60 parts of silica fume, 13.6 to 19.2 parts of a water reducing agent, 50 to 68 parts of calcium oxide and 135 to 165 parts of water, wherein the water-binder ratio is controlled to be0.25 to 0.26; the sand rate is controlled to be 0.45 to 0.50; the water/cement ratio is 0.32 to 0.34; the silica fume accounts for 8%-9% of the total amount of all the cementing materials; and the flyash accounts for 13-14% of the total amount of all the cementing materials. The concrete provided by the invention has excellent workability, pumping performance and compressive strength, and also has the characteristic of self-compaction shrinkage compensation.
本发明涉及自密实微膨胀混凝土及其制备方法和应用，属于混凝土制备领域。自密实微膨胀混凝土，由以下重量份的组份组成：水泥445‑490份、粗骨料820‑920份、细骨料750‑860份、粉煤灰65‑78份、硅灰45‑60份、减水剂13.6‑19.2份、氧化钙50‑68份和水135‑165份；其中，水胶比控制为0.25‑0.26；砂率控制为0.45‑0.50；水灰比为0.32‑0.34；硅灰占所有胶凝材料总量的8％‑9％；粉煤灰占所有胶凝材料总量的13％‑14％。本发明混凝土具有优异的工作性、泵送性能和抗压强度，同时具有自密实补偿收缩特征。
Self-compacting micro-expansive concrete as well as preparation method and application thereof
自密实微膨胀混凝土及其制备方法和应用
YANG WEI (author) / ZENG QINGFU (author)
2020-05-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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