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Corrosion-resistant high-performance concrete and preparation method thereof
The invention belongs to the technical field of concrete, and particularly relates to corrosion-resistant high-performance concrete and a preparation method thereof.The preparation method comprises the following steps that in a concrete mixer, dry mixing is conducted on fine aggregate, the mixing time is 5-7 min, Portland cement is added at the speed of 200-300 g/min, stirring continues to be conducted for 2-3 min, a composite reinforcing agent and water are added, stirring is conducted for 5-10 min, the mixture is poured into a mold, and the concrete is obtained; and vibrating for 1-2 minutes by using a vibrating table, and curing for 28 days in a constant-temperature and constant-humidity box with the temperature of 20-25 DEG C and the humidity of 60-65%. By adding the composite reinforcing agent, the microstructure in the concrete is remarkably reinforced. Polyimide and nano titanium dioxide powder in the composite reinforcing agent can fill tiny pores and cracks in the concrete, so that the structure of the concrete is more compact, the mechanical property of the concrete is improved, permeation of moisture and harmful substances is effectively prevented, and the durability of the concrete is enhanced.
本发明属于混凝土技术领域，具体地涉及一种耐腐蚀高性能混凝土及其制备方法，包括以下步骤：在混凝土搅拌机中，先将细骨料进行干拌，搅拌时间为5‑7mi n，以200‑300g/mi n的速度加入硅酸盐水泥，并继续搅拌2‑3mi n，加入复合增强剂和水，搅拌5‑10mi n，浇筑到模具中，使用振动台振捣1‑2mi n，在温度为20‑25℃，湿度为60‑65％的恒温恒湿箱中进行养护28天。本发明通过添加复合增强剂，混凝土内部的微观结构得到了显著强化。复合增强剂中的聚酰亚胺和纳米二氧化钛粉末能够填充混凝土中的微小孔隙和裂缝，使得混凝土的结构更加致密，不仅提高了混凝土的力学性能，还有效地阻止了水分和有害物质的渗透，从而增强了混凝土的耐久性。
Corrosion-resistant high-performance concrete and preparation method thereof
The invention belongs to the technical field of concrete, and particularly relates to corrosion-resistant high-performance concrete and a preparation method thereof.The preparation method comprises the following steps that in a concrete mixer, dry mixing is conducted on fine aggregate, the mixing time is 5-7 min, Portland cement is added at the speed of 200-300 g/min, stirring continues to be conducted for 2-3 min, a composite reinforcing agent and water are added, stirring is conducted for 5-10 min, the mixture is poured into a mold, and the concrete is obtained; and vibrating for 1-2 minutes by using a vibrating table, and curing for 28 days in a constant-temperature and constant-humidity box with the temperature of 20-25 DEG C and the humidity of 60-65%. By adding the composite reinforcing agent, the microstructure in the concrete is remarkably reinforced. Polyimide and nano titanium dioxide powder in the composite reinforcing agent can fill tiny pores and cracks in the concrete, so that the structure of the concrete is more compact, the mechanical property of the concrete is improved, permeation of moisture and harmful substances is effectively prevented, and the durability of the concrete is enhanced.
本发明属于混凝土技术领域，具体地涉及一种耐腐蚀高性能混凝土及其制备方法，包括以下步骤：在混凝土搅拌机中，先将细骨料进行干拌，搅拌时间为5‑7mi n，以200‑300g/mi n的速度加入硅酸盐水泥，并继续搅拌2‑3mi n，加入复合增强剂和水，搅拌5‑10mi n，浇筑到模具中，使用振动台振捣1‑2mi n，在温度为20‑25℃，湿度为60‑65％的恒温恒湿箱中进行养护28天。本发明通过添加复合增强剂，混凝土内部的微观结构得到了显著强化。复合增强剂中的聚酰亚胺和纳米二氧化钛粉末能够填充混凝土中的微小孔隙和裂缝，使得混凝土的结构更加致密，不仅提高了混凝土的力学性能，还有效地阻止了水分和有害物质的渗透，从而增强了混凝土的耐久性。
Corrosion-resistant high-performance concrete and preparation method thereof
一种耐腐蚀高性能混凝土及其制备方法
DING DEKUN (author) / SHAO XINGUO (author) / HUANG HUA (author)
2024-08-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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