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A platform for research: civil engineering, architecture and urbanism
Slow-release shrinkage reducing agent for concrete, preparation method of slow-release shrinkage reducing agent and concrete
The invention discloses a slow-release shrinkage reducing agent for concrete and a preparation method thereof and concrete, the slow-release shrinkage reducing agent for concrete comprises a floating bead, a liquid shrinkage reducing agent is stored in the floating bead, a plurality of holes are etched in the surface of the floating bead, and the surface of the floating bead is coated with a film sealing material; the liquid shrinkage reducing agent is an alcohol ether polymer, and the film body sealing material is silica sol. The preparation method comprises the following steps: soaking floating beads in an acid corrosion solution, etching holes in the surface, washing, carrying out suction filtration, and drying; the etched floating beads are soaked in a liquid shrinkage reducing agent, a preservative film is placed, holes are reserved in a film body, and the preservative film is placed in a vacuum environment; and filtering to obtain the floating beads containing the shrinkage reducing agent, drying, soaking in a sealant solution, and drying. The concrete modifier is simple in preparation process, low in economic cost and stable in property, and can be directly doped into concrete to ensure the mechanical property of the concrete, stably reduce the shrinkage of the concrete for a long time, improve the cracking performance of the concrete and improve the durability of the concrete; the concrete admixture is simple to operate and can be directly added into concrete.
本发明公开了一种混凝土用缓释减缩剂及其制备方法与混凝土，混凝土用缓释减缩剂，包括漂珠，漂珠的内部储存有液体减缩剂，表面刻蚀若干孔洞且包覆有膜体密封材料；液体减缩剂为醇醚聚合物，膜体密封材料为硅溶胶。制备方法包括以下步骤：将漂珠放入酸腐蚀液中浸泡，表面蚀刻孔洞，冲洗抽滤干燥；将蚀刻后的漂珠浸泡在液体减缩剂中，放置保鲜膜，膜体上预留孔洞，真空环境放置；过滤得到内部包含减缩剂的漂珠，干燥，放入密封剂溶液中浸泡，干燥。本发明制备工艺简单，经济成本低且性质稳定，可直接掺入混凝土中，保证混凝土力学性能，长期稳定地减少混凝土收缩，改善混凝土的开裂性能，提高混凝土耐久性；操作简便，直接加入到混凝土中即可。
Slow-release shrinkage reducing agent for concrete, preparation method of slow-release shrinkage reducing agent and concrete
The invention discloses a slow-release shrinkage reducing agent for concrete and a preparation method thereof and concrete, the slow-release shrinkage reducing agent for concrete comprises a floating bead, a liquid shrinkage reducing agent is stored in the floating bead, a plurality of holes are etched in the surface of the floating bead, and the surface of the floating bead is coated with a film sealing material; the liquid shrinkage reducing agent is an alcohol ether polymer, and the film body sealing material is silica sol. The preparation method comprises the following steps: soaking floating beads in an acid corrosion solution, etching holes in the surface, washing, carrying out suction filtration, and drying; the etched floating beads are soaked in a liquid shrinkage reducing agent, a preservative film is placed, holes are reserved in a film body, and the preservative film is placed in a vacuum environment; and filtering to obtain the floating beads containing the shrinkage reducing agent, drying, soaking in a sealant solution, and drying. The concrete modifier is simple in preparation process, low in economic cost and stable in property, and can be directly doped into concrete to ensure the mechanical property of the concrete, stably reduce the shrinkage of the concrete for a long time, improve the cracking performance of the concrete and improve the durability of the concrete; the concrete admixture is simple to operate and can be directly added into concrete.
本发明公开了一种混凝土用缓释减缩剂及其制备方法与混凝土，混凝土用缓释减缩剂，包括漂珠，漂珠的内部储存有液体减缩剂，表面刻蚀若干孔洞且包覆有膜体密封材料；液体减缩剂为醇醚聚合物，膜体密封材料为硅溶胶。制备方法包括以下步骤：将漂珠放入酸腐蚀液中浸泡，表面蚀刻孔洞，冲洗抽滤干燥；将蚀刻后的漂珠浸泡在液体减缩剂中，放置保鲜膜，膜体上预留孔洞，真空环境放置；过滤得到内部包含减缩剂的漂珠，干燥，放入密封剂溶液中浸泡，干燥。本发明制备工艺简单，经济成本低且性质稳定，可直接掺入混凝土中，保证混凝土力学性能，长期稳定地减少混凝土收缩，改善混凝土的开裂性能，提高混凝土耐久性；操作简便，直接加入到混凝土中即可。
Slow-release shrinkage reducing agent for concrete, preparation method of slow-release shrinkage reducing agent and concrete
一种混凝土用缓释减缩剂及其制备方法与混凝土
GUO LIPING (author) / LU JIATAO (author) / FEI XIANGPENG (author)
2024-06-07
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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