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Anti-freezing anti-cracking polylactic acid fiber concrete and preparation method thereof
The invention belongs to the technical field of concrete, and particularly relates to anti-freezing and anti-cracking polylactic acid fiber concrete and a preparation method thereof. The concrete comprises the following raw materials in parts by weight: 5-10 parts of polylactic acid fiber, 450-500 parts of cement, 200-400 parts of fine gravel, 30-50 parts of silica fume, 1-3 parts of a polycarboxylic acid high-performance water reducing agent, 6-24 parts of an anti-freezing stabilizer, 1-3 parts of polyvinyl alcohol and 100-200 parts of water. A net structure formed by the nano silicon dioxide and the silicon urea copolymer effectively captures and fixes moisture, formation and expansion of ice crystals are greatly inhibited, and particularly in the freezing and thawing cycle process, damage of the ice crystals to the concrete structure is remarkably reduced, so that the freezing resistance of the concrete is greatly improved. In addition, phosphate is added and combined with metal ions in concrete, so that the freezing point of the solution is reduced, and the anti-freezing capability of the material is further enhanced.
本发明属于混凝土技术领域，具体地涉及一种抗冻抗开裂聚乳酸纤维混凝土及其制备方法。按重量份计包括以下原料：聚乳酸纤维5‑10份、水泥450‑500份、细砂石200‑400份、硅灰30‑50份、聚羧酸高性能减水剂1‑3份、抗冻稳定剂6‑24份、聚乙烯醇1‑3份和水100‑200份。本发明中纳米二氧化硅与硅脲共聚物形成的网状结构有效捕获和固定了水分，极大抑制了冰晶的形成和扩展，尤其在冻融循环过程中，显著减少了冰晶对混凝土结构的破坏，从而大幅提升了混凝土的抗冻性。此外，磷酸盐的加入通过与混凝土中金属离子的结合，降低了溶液的冰点，进一步增强了材料的抗冻能力。
Anti-freezing anti-cracking polylactic acid fiber concrete and preparation method thereof
The invention belongs to the technical field of concrete, and particularly relates to anti-freezing and anti-cracking polylactic acid fiber concrete and a preparation method thereof. The concrete comprises the following raw materials in parts by weight: 5-10 parts of polylactic acid fiber, 450-500 parts of cement, 200-400 parts of fine gravel, 30-50 parts of silica fume, 1-3 parts of a polycarboxylic acid high-performance water reducing agent, 6-24 parts of an anti-freezing stabilizer, 1-3 parts of polyvinyl alcohol and 100-200 parts of water. A net structure formed by the nano silicon dioxide and the silicon urea copolymer effectively captures and fixes moisture, formation and expansion of ice crystals are greatly inhibited, and particularly in the freezing and thawing cycle process, damage of the ice crystals to the concrete structure is remarkably reduced, so that the freezing resistance of the concrete is greatly improved. In addition, phosphate is added and combined with metal ions in concrete, so that the freezing point of the solution is reduced, and the anti-freezing capability of the material is further enhanced.
本发明属于混凝土技术领域，具体地涉及一种抗冻抗开裂聚乳酸纤维混凝土及其制备方法。按重量份计包括以下原料：聚乳酸纤维5‑10份、水泥450‑500份、细砂石200‑400份、硅灰30‑50份、聚羧酸高性能减水剂1‑3份、抗冻稳定剂6‑24份、聚乙烯醇1‑3份和水100‑200份。本发明中纳米二氧化硅与硅脲共聚物形成的网状结构有效捕获和固定了水分，极大抑制了冰晶的形成和扩展，尤其在冻融循环过程中，显著减少了冰晶对混凝土结构的破坏，从而大幅提升了混凝土的抗冻性。此外，磷酸盐的加入通过与混凝土中金属离子的结合，降低了溶液的冰点，进一步增强了材料的抗冻能力。
Anti-freezing anti-cracking polylactic acid fiber concrete and preparation method thereof
一种抗冻抗开裂聚乳酸纤维混凝土及其制备方法
WANG ZHIYUAN (author) / ZHANG ZHIJIAN (author) / LIU HUIHUI (author) / LI JIANGHAO (author) / WANG FENG (author)
2024-11-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Anti-freezing cracking concrete and preparation method thereof
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Anti-freezing and anti-cracking concrete and preparation method thereof
| European Patent Office | 2021
Anti-freezing and anti-cracking concrete and preparation method thereof
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