Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Concrete material with crack self-healing capability under dry-wet cycle
The invention discloses a concrete material with crack self-healing capability under dry-wet cycle. The concrete material comprises cement, mineral powder, fly ash, quartz sand, PVA fiber, water and a water reducing agent, wherein the mass ratio of the cement to the mineral powder to the fly ash is 0.15: 0.15: 0.70, and the cement, the mineral powder and the fly ash are used for being mixed to form a gel material; the mass ratio of the quartz sand to the gel material is 0.40: 1, and the mass ratio of the water to the gel material is 0.25: 1; the volume fraction of the PVA fiber is 2.00% of that of the gel material; the weight of the water reducing agent is 0.20% of the total weight of the cement, the mineral powder, the fly ash, the quartz sand and the water. After the material is damaged, under the chlorine salt dry-wet cycle corrosion condition, the crack width is reduced after a period of time, and the number is reduced; after secondary loading, the mechanical property of the prepared material is obviously improved, which shows that the novel concrete material has certain self-healing ability and good durability, and has wide application prospects in a dry-wet cycle environment.
本发明公开了一种在干湿循环下具有裂缝自愈合能力的混凝土材料，其包括水泥、矿粉、粉煤灰、石英砂、PVA纤维、水和减水剂；其中，水泥、矿粉与粉煤灰的质量比为0.15∶0.15∶0.70，且水泥、矿粉、粉煤灰用于混合形成凝胶材料；石英砂与凝胶材料的质量比为0.40∶1，水与凝胶材料的质量比为0.25∶1；PVA纤维的体积分数为凝胶材料的2.00％；减水剂为水泥、矿粉、粉煤灰、石英砂和水总重的0.20％。该材料损伤后，在氯盐干湿循环腐蚀条件下，经过一段时间后裂缝宽度减小，数量变少；所制得材料在二次加载后，力学性能有明显的回升，说明这种新型混凝土材料具有一定的自愈合能力，耐久性好，在干湿循环环境下具有广阔的应用前景。
Concrete material with crack self-healing capability under dry-wet cycle
The invention discloses a concrete material with crack self-healing capability under dry-wet cycle. The concrete material comprises cement, mineral powder, fly ash, quartz sand, PVA fiber, water and a water reducing agent, wherein the mass ratio of the cement to the mineral powder to the fly ash is 0.15: 0.15: 0.70, and the cement, the mineral powder and the fly ash are used for being mixed to form a gel material; the mass ratio of the quartz sand to the gel material is 0.40: 1, and the mass ratio of the water to the gel material is 0.25: 1; the volume fraction of the PVA fiber is 2.00% of that of the gel material; the weight of the water reducing agent is 0.20% of the total weight of the cement, the mineral powder, the fly ash, the quartz sand and the water. After the material is damaged, under the chlorine salt dry-wet cycle corrosion condition, the crack width is reduced after a period of time, and the number is reduced; after secondary loading, the mechanical property of the prepared material is obviously improved, which shows that the novel concrete material has certain self-healing ability and good durability, and has wide application prospects in a dry-wet cycle environment.
本发明公开了一种在干湿循环下具有裂缝自愈合能力的混凝土材料，其包括水泥、矿粉、粉煤灰、石英砂、PVA纤维、水和减水剂；其中，水泥、矿粉与粉煤灰的质量比为0.15∶0.15∶0.70，且水泥、矿粉、粉煤灰用于混合形成凝胶材料；石英砂与凝胶材料的质量比为0.40∶1，水与凝胶材料的质量比为0.25∶1；PVA纤维的体积分数为凝胶材料的2.00％；减水剂为水泥、矿粉、粉煤灰、石英砂和水总重的0.20％。该材料损伤后，在氯盐干湿循环腐蚀条件下，经过一段时间后裂缝宽度减小，数量变少；所制得材料在二次加载后，力学性能有明显的回升，说明这种新型混凝土材料具有一定的自愈合能力，耐久性好，在干湿循环环境下具有广阔的应用前景。
Concrete material with crack self-healing capability under dry-wet cycle
一种在干湿循环下具有裂缝自愈合能力的混凝土材料
ZENG QINGYOU (Autor:in) / YE CHENFENG (Autor:in) / XUE RAN (Autor:in) / CHENG PEIYUAN (Autor:in) / ZHANG BISHENG (Autor:in) / LIU LINSHISHUI (Autor:in) / QIU JUNFENG (Autor:in) / LIU TONG (Autor:in)
29.07.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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