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High-strength self-compacting concrete and preparation method thereof
The invention relates to the technical field of concrete, and particularly discloses high-strength self-compacting concrete and a preparation method thereof. The concrete is prepared from the following raw materials, by weight: cement, coal ash, mineral powder, fine aggregate, coarse aggregate, a water reducing agent, an expanding agent, water, diatomite and modified sepiolite powder. The invention also discloses a preparation method of the concrete. The method comprises the following steps: mixing the coarse aggregate and fine aggregate, adding the diatomite and modified sepiolite powder, anduniformly performing mixing to obtain a first mixture; mixing cement, fly ash and mineral powder to obtain a second mixture; mixing the water reducing agent, the water and the expanding agent to obtain an admixture solution, and stirring and mixing the admixture solution, the first mixture and the second mixture. Therefore, the obtained self-compacting concrete has excellent strength and self-compacting performance, the self-shrinking performance is improved, and the cracking possibility caused by self-shrinking is reduced.
本申请涉及混凝土的技术领域，具体公开了一种高强自密实混凝土及其制备方法，该混凝土由包含以下重量份的原料制得：水泥；粉煤灰；矿粉；细骨料；粗骨料；减水剂；膨胀剂；水、硅藻土和改性海泡石粉；本申请还公开了上述混凝土的制备方法，包括以下步骤：将粗骨料和细骨料混合，然后加入硅藻土和改性海泡石粉，混合均匀，得到第一混合物；将水泥、粉煤灰和矿粉混合得到第二混合物；将减水剂、水和膨胀剂混合，得到外加剂溶液，将外加剂溶液与第一混合物和第二混合物搅拌，混合，本申请得到的自密实混凝土具有优良的强度和自密实性能，而且改善了自收缩性能，减少由于自收缩引起的开裂的可能性。
High-strength self-compacting concrete and preparation method thereof
The invention relates to the technical field of concrete, and particularly discloses high-strength self-compacting concrete and a preparation method thereof. The concrete is prepared from the following raw materials, by weight: cement, coal ash, mineral powder, fine aggregate, coarse aggregate, a water reducing agent, an expanding agent, water, diatomite and modified sepiolite powder. The invention also discloses a preparation method of the concrete. The method comprises the following steps: mixing the coarse aggregate and fine aggregate, adding the diatomite and modified sepiolite powder, anduniformly performing mixing to obtain a first mixture; mixing cement, fly ash and mineral powder to obtain a second mixture; mixing the water reducing agent, the water and the expanding agent to obtain an admixture solution, and stirring and mixing the admixture solution, the first mixture and the second mixture. Therefore, the obtained self-compacting concrete has excellent strength and self-compacting performance, the self-shrinking performance is improved, and the cracking possibility caused by self-shrinking is reduced.
本申请涉及混凝土的技术领域，具体公开了一种高强自密实混凝土及其制备方法，该混凝土由包含以下重量份的原料制得：水泥；粉煤灰；矿粉；细骨料；粗骨料；减水剂；膨胀剂；水、硅藻土和改性海泡石粉；本申请还公开了上述混凝土的制备方法，包括以下步骤：将粗骨料和细骨料混合，然后加入硅藻土和改性海泡石粉，混合均匀，得到第一混合物；将水泥、粉煤灰和矿粉混合得到第二混合物；将减水剂、水和膨胀剂混合，得到外加剂溶液，将外加剂溶液与第一混合物和第二混合物搅拌，混合，本申请得到的自密实混凝土具有优良的强度和自密实性能，而且改善了自收缩性能，减少由于自收缩引起的开裂的可能性。
High-strength self-compacting concrete and preparation method thereof
一种高强自密实混凝土及其制备方法
LIAO JING (author) / YU HONG (author) / MA JINGSHEN (author) / JIN LEI (author) / WANG YUZHONG (author) / QU DONGJIE (author) / WANG BIN (author)
2020-12-08
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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