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A platform for research: civil engineering, architecture and urbanism
Seawater coral sand ultra-high performance concrete and preparation method thereof
The invention discloses seawater coral sand ultra-high performance concrete, and belongs to the technical field of building materials. The seawater coral sand ultra-high performance concrete comprisesthe following components in parts by weight: 900-1100 parts of coral sand, 700-900 parts of cement, 100-270 parts of silica fume, 75-120 parts of modified metakaolin, 78-312 parts of steel fibers, 200-300 parts of water, 5-20 parts of a water reducing agent, and 1-2 parts of an defoaming agent. According to the concrete, coral sand is adopted to replace quartz sand to serve as an aggregate, by means of the water absorption and water return characteristics of the coral sand, the internal curing effect can be achieved in the concrete, self-shrinkage of seawater coral sand ultra-high performanceconcrete can be improved, corrosion of chloride ions in the ocean to concrete steel can be prevented by adopting modified metakaolin, and the durability of the concrete is further improved; stainlesssteel fibers are adopted to replace common steel fibers, the compressive strength and breaking strength of the concrete are improved, and the water reducing agent and the defoaming agent are adopted,so that the concrete has good workability and compactness. The proportion is reasonable and scientific, and the prepared seawater coral sand ultra-high performance concrete has the characteristics ofgood workability, high strength, low shrinkage and high durability.
本发明公开了一种海水珊瑚砂超高性能混凝土，属于建筑材料技术领域，包括以下重量份的组分：珊瑚砂900～1100份、水泥700～900份、硅灰100～270份、改性偏高岭土75～120份、钢纤维78～312份、水200～300份、减水剂5～20份、消泡剂1～2份。所述混凝土采用珊瑚砂替代石英砂作为集料，利用其吸水返水特性，在混凝土中可起到内养护的作用，可改善海水珊瑚砂超高性能混凝土的自收缩，采用改性偏高岭土可防止海洋中氯离子对混凝土钢材的侵蚀，进一步提高混凝土的耐久性，采用不锈钢纤维替代普通钢纤维，提高混凝土抗压强度和抗折强度，采用减水剂和消泡剂，使其具有良好的工作性及密实度。本发明配比合理科学，制得的海水珊瑚砂超高性能混凝土，具有工作性好、高强度、低收缩、高耐久性的特点。
Seawater coral sand ultra-high performance concrete and preparation method thereof
The invention discloses seawater coral sand ultra-high performance concrete, and belongs to the technical field of building materials. The seawater coral sand ultra-high performance concrete comprisesthe following components in parts by weight: 900-1100 parts of coral sand, 700-900 parts of cement, 100-270 parts of silica fume, 75-120 parts of modified metakaolin, 78-312 parts of steel fibers, 200-300 parts of water, 5-20 parts of a water reducing agent, and 1-2 parts of an defoaming agent. According to the concrete, coral sand is adopted to replace quartz sand to serve as an aggregate, by means of the water absorption and water return characteristics of the coral sand, the internal curing effect can be achieved in the concrete, self-shrinkage of seawater coral sand ultra-high performanceconcrete can be improved, corrosion of chloride ions in the ocean to concrete steel can be prevented by adopting modified metakaolin, and the durability of the concrete is further improved; stainlesssteel fibers are adopted to replace common steel fibers, the compressive strength and breaking strength of the concrete are improved, and the water reducing agent and the defoaming agent are adopted,so that the concrete has good workability and compactness. The proportion is reasonable and scientific, and the prepared seawater coral sand ultra-high performance concrete has the characteristics ofgood workability, high strength, low shrinkage and high durability.
本发明公开了一种海水珊瑚砂超高性能混凝土，属于建筑材料技术领域，包括以下重量份的组分：珊瑚砂900～1100份、水泥700～900份、硅灰100～270份、改性偏高岭土75～120份、钢纤维78～312份、水200～300份、减水剂5～20份、消泡剂1～2份。所述混凝土采用珊瑚砂替代石英砂作为集料，利用其吸水返水特性，在混凝土中可起到内养护的作用，可改善海水珊瑚砂超高性能混凝土的自收缩，采用改性偏高岭土可防止海洋中氯离子对混凝土钢材的侵蚀，进一步提高混凝土的耐久性，采用不锈钢纤维替代普通钢纤维，提高混凝土抗压强度和抗折强度，采用减水剂和消泡剂，使其具有良好的工作性及密实度。本发明配比合理科学，制得的海水珊瑚砂超高性能混凝土，具有工作性好、高强度、低收缩、高耐久性的特点。
Seawater coral sand ultra-high performance concrete and preparation method thereof
一种海水珊瑚砂超高性能混凝土及其制备方法
WANG JUE (author) / ZHENG NAN (author) / WANG YANAN (author) / GAO YUAN (author) / ZHANG FASHENG (author) / GAO QUANQING (author)
2021-03-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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