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A platform for research: civil engineering, architecture and urbanism
Self-compacting fair-faced concrete for special-shaped column structure, and preparation method thereof
The invention discloses a self-compacting fair-faced concrete for a special-shaped column structure, and a preparation method thereof. The mix proportion of the self-compacting fair-faced concrete isas follows: the total amount of a cementing material is (500+/-50) kg/m<3>; the mixing amount of fly ash is (12+/-2)%; the mineral powder mixing amount is (5+/-1)%; the mixing amount of silica fume is(6+/-1)%; the additive mixing amount is (2+/-1)%; and the volume weight is (2420+/-20) kg/m<3>, wherein % represents the percentage of the total amount of the cementing material, the water-cement ratio is 0.340, the sand ratio is 46%, the admixture comprises an air entraining agent and a defoaming agent, the air entraining agent and the defoaming agent meet the mass ratio of 1: 1, and the mixingamount of the air entraining agent or the defoaming agent is 1-3% of the mixing amount of the admixture. The self-compacting fair-faced concrete which is excellent in self-compacting performance and apparent mass, small in additive mixing amount, easy and convenient to design and operate and stable and controllable in concrete quality is obtained by accurately controlling key parameters such as the dosage ratio of the defoaming agent to the air entraining agent, the water-cement ratio and the sand rate, and the defects of traditional self-compacting fair-faced concrete are overcome.
本发明公开了一种用于异形柱结构的自密实清水混凝土及其制备方法，所述自密实清水混凝土的配合比为：胶凝材料总量500±50kg/m3，粉煤灰掺量为12±2％，矿粉掺量5±1％，硅灰掺量6±1％，外加剂掺量2±1％，容重为2420±20kg/m3，其中，％表示胶凝材料总量的百分数，水胶比为0.340，砂率为46％，所述外加剂包括引气剂和消泡剂，所述引气剂和消泡剂满足1：1的质量比例关系，引气剂或消泡剂的掺量为外加剂掺量的1－3％。本发明通过精确控制消泡剂和引气剂的用量比、水胶比和砂率等关键参数，获得了自密实性能和表观质量优异、外加剂掺量少、设计和操作简便、混凝土质量稳定可控的自密实清水混凝土，克服了传统自密实清水混凝土所存在的不足。
Self-compacting fair-faced concrete for special-shaped column structure, and preparation method thereof
The invention discloses a self-compacting fair-faced concrete for a special-shaped column structure, and a preparation method thereof. The mix proportion of the self-compacting fair-faced concrete isas follows: the total amount of a cementing material is (500+/-50) kg/m<3>; the mixing amount of fly ash is (12+/-2)%; the mineral powder mixing amount is (5+/-1)%; the mixing amount of silica fume is(6+/-1)%; the additive mixing amount is (2+/-1)%; and the volume weight is (2420+/-20) kg/m<3>, wherein % represents the percentage of the total amount of the cementing material, the water-cement ratio is 0.340, the sand ratio is 46%, the admixture comprises an air entraining agent and a defoaming agent, the air entraining agent and the defoaming agent meet the mass ratio of 1: 1, and the mixingamount of the air entraining agent or the defoaming agent is 1-3% of the mixing amount of the admixture. The self-compacting fair-faced concrete which is excellent in self-compacting performance and apparent mass, small in additive mixing amount, easy and convenient to design and operate and stable and controllable in concrete quality is obtained by accurately controlling key parameters such as the dosage ratio of the defoaming agent to the air entraining agent, the water-cement ratio and the sand rate, and the defects of traditional self-compacting fair-faced concrete are overcome.
本发明公开了一种用于异形柱结构的自密实清水混凝土及其制备方法，所述自密实清水混凝土的配合比为：胶凝材料总量500±50kg/m3，粉煤灰掺量为12±2％，矿粉掺量5±1％，硅灰掺量6±1％，外加剂掺量2±1％，容重为2420±20kg/m3，其中，％表示胶凝材料总量的百分数，水胶比为0.340，砂率为46％，所述外加剂包括引气剂和消泡剂，所述引气剂和消泡剂满足1：1的质量比例关系，引气剂或消泡剂的掺量为外加剂掺量的1－3％。本发明通过精确控制消泡剂和引气剂的用量比、水胶比和砂率等关键参数，获得了自密实性能和表观质量优异、外加剂掺量少、设计和操作简便、混凝土质量稳定可控的自密实清水混凝土，克服了传统自密实清水混凝土所存在的不足。
Self-compacting fair-faced concrete for special-shaped column structure, and preparation method thereof
一种用于异形柱结构的自密实清水混凝土及其制备方法
LIU HUADONG (author) / WU XIN (author) / HE SHUN'AI (author) / GUAN SUMIN (author) / LIU DENGXIAN (author) / JING YAO (author) / HU JIANG (author) / XIANG PENG (author) / JIANG XIAOJUN (author) / GUI GENSHENG (author)
2020-10-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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