A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Dry-mixed waterproof mortar and preparation method thereof
The invention relates to the technical field of concrete admixtures, in particular to dry-mixed waterproof mortar and a preparation method thereof.The dry-mixed waterproof mortar is prepared from ordinary Portland cement, quick-hardening sulphoaluminate cement, machine-made sand, redispersible latex powder, a water-retention thickening material and a capsule type hydrophobic material; the capsule type hydrophobic material is prepared by adding a silica-based polymer-based network polymer into an aqueous solution formed by mixing an organic silicon water repellent and a dispersing agent, filtering and drying; the silica-based polymer-based network polymer is obtained by mixing an oil-in-water emulsion and a pre-hydrolysate, wherein the oil-in-water emulsion is prepared from a surfactant and epoxy resin; the prehydrolysate is obtained by putting triacetoxyethyl silane into an acidic aqueous solution. According to the dry-mixed waterproof mortar, by adding the capsule type hydrophobic material, the water absorption rate of a cement-based material and the seepage force of the mortar surface and capillary tubes can be greatly reduced, the erosion resistance of the mortar is improved, and then the waterproof performance of the waterproof mortar is improved.
本发明涉及混凝土外加剂技术领域，特别涉及一种干混防水砂浆及其制备方法，其干混防水砂浆的原料包括普通硅酸盐水泥、快硬硫铝酸盐水泥、机制砂、可再分散乳胶粉、保水增稠材料和胶囊型憎水材料；胶囊型憎水材料为将二氧化硅基的聚合物基网络聚合物加入至有机硅憎水剂与分散剂混合的水溶液中经过滤干燥制得；二氧化硅基的聚合物基网络聚合物由水包油乳液和预水解物混合得到，其中水包油乳液为将表面活性剂和环氧树脂制得；预水解物为将三乙酰氧基乙基硅烷置于酸性水溶液得到。该干混防水砂浆，通过添加胶囊型憎水材料可大幅降低水泥基材料的吸水率和砂浆表面及毛细管的渗透力，提高砂浆抗侵蚀能力，进而改善防水砂浆的防水性能。
Dry-mixed waterproof mortar and preparation method thereof
The invention relates to the technical field of concrete admixtures, in particular to dry-mixed waterproof mortar and a preparation method thereof.The dry-mixed waterproof mortar is prepared from ordinary Portland cement, quick-hardening sulphoaluminate cement, machine-made sand, redispersible latex powder, a water-retention thickening material and a capsule type hydrophobic material; the capsule type hydrophobic material is prepared by adding a silica-based polymer-based network polymer into an aqueous solution formed by mixing an organic silicon water repellent and a dispersing agent, filtering and drying; the silica-based polymer-based network polymer is obtained by mixing an oil-in-water emulsion and a pre-hydrolysate, wherein the oil-in-water emulsion is prepared from a surfactant and epoxy resin; the prehydrolysate is obtained by putting triacetoxyethyl silane into an acidic aqueous solution. According to the dry-mixed waterproof mortar, by adding the capsule type hydrophobic material, the water absorption rate of a cement-based material and the seepage force of the mortar surface and capillary tubes can be greatly reduced, the erosion resistance of the mortar is improved, and then the waterproof performance of the waterproof mortar is improved.
本发明涉及混凝土外加剂技术领域，特别涉及一种干混防水砂浆及其制备方法，其干混防水砂浆的原料包括普通硅酸盐水泥、快硬硫铝酸盐水泥、机制砂、可再分散乳胶粉、保水增稠材料和胶囊型憎水材料；胶囊型憎水材料为将二氧化硅基的聚合物基网络聚合物加入至有机硅憎水剂与分散剂混合的水溶液中经过滤干燥制得；二氧化硅基的聚合物基网络聚合物由水包油乳液和预水解物混合得到，其中水包油乳液为将表面活性剂和环氧树脂制得；预水解物为将三乙酰氧基乙基硅烷置于酸性水溶液得到。该干混防水砂浆，通过添加胶囊型憎水材料可大幅降低水泥基材料的吸水率和砂浆表面及毛细管的渗透力，提高砂浆抗侵蚀能力，进而改善防水砂浆的防水性能。
Dry-mixed waterproof mortar and preparation method thereof
一种干混防水砂浆及其制备方法
LAI GUANGXING (author) / YIN JIANLI (author) / GUO YUANQIANG (author) / LIN TIANXING (author) / XIAO WEI (author) / XUE BOYU (author)
2023-04-18
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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