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A platform for research: civil engineering, architecture and urbanism
Freeze-thaw resistant recycled concrete and preparation method thereof
The invention relates to the technical field of recycled concrete, in particular to freeze-thaw-resistant recycled concrete and a preparation method thereof.The freeze-thaw-resistant recycled concrete is prepared from Portland cement, fine aggregate, coarse aggregate, ceramsite, water, a polycarboxylate superplasticizer and an air entraining agent; the fine aggregate comprises natural fine aggregate and modified recycled fine aggregate, and the modified recycled fine aggregate accounts for 20-80% of the fine aggregate in percentage by weight; the coarse aggregate comprises natural coarse aggregate and modified recycled coarse aggregate, and the modified recycled coarse aggregate accounts for 20-80% of the coarse aggregate in percentage by weight; the modified recycled fine aggregate and the modified recycled coarse aggregate are prepared by soaking in a modification liquid, and the modification liquid comprises the following raw materials: an anionic surfactant, a nonionic penetrant, a polydimethylsiloxane emulsion, a silane coupling agent and water; the method has the advantage of improving the freeze-thaw resistance of the recycled concrete.
本申请涉及再生混凝土的技术领域，尤其是涉及一种抗冻融再生混凝土及其制备方法，所述抗冻融再生混凝土包括如下原料：硅酸盐水泥、细骨料、粗骨料、陶粒、水、聚羧酸减水剂和引气剂；细骨料包括天然细骨料和改性再生细骨料，改性再生细骨料占细骨料的重量百分比为20‑80%；粗骨料包括天然粗骨料和改性再生粗骨料，改性再生粗骨料占粗骨料的重量百分比为20‑80%；改性再生细骨料和改性再生粗骨料通过改性液浸泡制得，改性液包括的原料如下：阴离子表面活性剂、非离子渗透剂、聚二甲基硅氧烷乳液、硅烷偶联剂和水；其具有提高再生混凝土的抗冻融性能的优点。
Freeze-thaw resistant recycled concrete and preparation method thereof
The invention relates to the technical field of recycled concrete, in particular to freeze-thaw-resistant recycled concrete and a preparation method thereof.The freeze-thaw-resistant recycled concrete is prepared from Portland cement, fine aggregate, coarse aggregate, ceramsite, water, a polycarboxylate superplasticizer and an air entraining agent; the fine aggregate comprises natural fine aggregate and modified recycled fine aggregate, and the modified recycled fine aggregate accounts for 20-80% of the fine aggregate in percentage by weight; the coarse aggregate comprises natural coarse aggregate and modified recycled coarse aggregate, and the modified recycled coarse aggregate accounts for 20-80% of the coarse aggregate in percentage by weight; the modified recycled fine aggregate and the modified recycled coarse aggregate are prepared by soaking in a modification liquid, and the modification liquid comprises the following raw materials: an anionic surfactant, a nonionic penetrant, a polydimethylsiloxane emulsion, a silane coupling agent and water; the method has the advantage of improving the freeze-thaw resistance of the recycled concrete.
本申请涉及再生混凝土的技术领域，尤其是涉及一种抗冻融再生混凝土及其制备方法，所述抗冻融再生混凝土包括如下原料：硅酸盐水泥、细骨料、粗骨料、陶粒、水、聚羧酸减水剂和引气剂；细骨料包括天然细骨料和改性再生细骨料，改性再生细骨料占细骨料的重量百分比为20‑80%；粗骨料包括天然粗骨料和改性再生粗骨料，改性再生粗骨料占粗骨料的重量百分比为20‑80%；改性再生细骨料和改性再生粗骨料通过改性液浸泡制得，改性液包括的原料如下：阴离子表面活性剂、非离子渗透剂、聚二甲基硅氧烷乳液、硅烷偶联剂和水；其具有提高再生混凝土的抗冻融性能的优点。
Freeze-thaw resistant recycled concrete and preparation method thereof
一种抗冻融再生混凝土及其制备方法
ZHANG BIYE (author) / DAI JIANHAI (author)
2024-02-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Freeze-thaw resistant recycled concrete and preparation method thereof
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