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A platform for research: civil engineering, architecture and urbanism
Early-strength magnesium phosphate cement repairing material and preparation method thereof
The invention provides an early-strength magnesium phosphate cement repairing material and a preparation method thereof. The early-strength magnesium phosphate cement repairing material comprises the following components: 30-35 parts of dead burned magnesium oxide, 15-20 parts of monopotassium phosphate, 5-10 parts of ammonium dihydrogen phosphate, 2-3 parts of borax, 7-10 parts of fly ash, 0.5-1.5 parts of redispersible latex powder, 0.02-0.05 part of triethanolamine and 15-25 parts of water. Compared with the prior art, the potassium dihydrogen phosphate and the ammonium dihydrogen phosphate are compounded, so that higher setting and hardening strength is achieved; the borax can improve the strength of the material after hardening while improving the water resistance; the redispersible latex powder enables the coating not to be easily wetted, so that the water resistance of the coating is greatly enhanced; triethanolamine not only can increase the fluidity of the slurry and reduce the porosity of the hardened slurry so as to improve the strength, but also can increase the interface bonding force between the redispersible latex powder and the hardened slurry. Under the condition that the setting time, namely the construction time, is sufficient, the cement mortar has the effects of high strength and good water resistance.
本发明提供了一种早强型磷酸镁水泥修补材料及其制备方法，成分：重烧氧化镁30‑35份，磷酸二氢钾15‑20份，磷酸二氢铵5‑10份，硼砂2‑3份，粉煤灰7‑10份，可再分散乳胶粉0.5‑1.5份，三乙醇胺0.02‑0.05份，水15‑25份。与现有技术相比，本发明磷酸二氢钾和磷酸二氢铵复配，具有更高的凝结硬化强度；硼砂在提升耐水性的同时还能提升该材料的硬化后强度；可再分散乳胶粉使其不易润湿，极大增强了其耐水性；三乙醇胺既可以增加浆体流动性、降低浆体硬化后孔隙率进而提高强度，又可以增加再分散乳胶粉与硬化浆体的界面粘结力。本发明在保证凝结时间即施工时间充足的条件下，具有强度高，耐水性好的效果。
Early-strength magnesium phosphate cement repairing material and preparation method thereof
The invention provides an early-strength magnesium phosphate cement repairing material and a preparation method thereof. The early-strength magnesium phosphate cement repairing material comprises the following components: 30-35 parts of dead burned magnesium oxide, 15-20 parts of monopotassium phosphate, 5-10 parts of ammonium dihydrogen phosphate, 2-3 parts of borax, 7-10 parts of fly ash, 0.5-1.5 parts of redispersible latex powder, 0.02-0.05 part of triethanolamine and 15-25 parts of water. Compared with the prior art, the potassium dihydrogen phosphate and the ammonium dihydrogen phosphate are compounded, so that higher setting and hardening strength is achieved; the borax can improve the strength of the material after hardening while improving the water resistance; the redispersible latex powder enables the coating not to be easily wetted, so that the water resistance of the coating is greatly enhanced; triethanolamine not only can increase the fluidity of the slurry and reduce the porosity of the hardened slurry so as to improve the strength, but also can increase the interface bonding force between the redispersible latex powder and the hardened slurry. Under the condition that the setting time, namely the construction time, is sufficient, the cement mortar has the effects of high strength and good water resistance.
本发明提供了一种早强型磷酸镁水泥修补材料及其制备方法，成分：重烧氧化镁30‑35份，磷酸二氢钾15‑20份，磷酸二氢铵5‑10份，硼砂2‑3份，粉煤灰7‑10份，可再分散乳胶粉0.5‑1.5份，三乙醇胺0.02‑0.05份，水15‑25份。与现有技术相比，本发明磷酸二氢钾和磷酸二氢铵复配，具有更高的凝结硬化强度；硼砂在提升耐水性的同时还能提升该材料的硬化后强度；可再分散乳胶粉使其不易润湿，极大增强了其耐水性；三乙醇胺既可以增加浆体流动性、降低浆体硬化后孔隙率进而提高强度，又可以增加再分散乳胶粉与硬化浆体的界面粘结力。本发明在保证凝结时间即施工时间充足的条件下，具有强度高，耐水性好的效果。
Early-strength magnesium phosphate cement repairing material and preparation method thereof
一种早强型磷酸镁水泥修补材料及其制备方法
LI FANGHUI (author) / XU GENGYOU (author) / CHEN FENG (author) / SONG NANJING (author) / SI HONGZHEN (author)
2022-12-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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Quick-hardening early-strength ultrahigh-performance magnesium phosphate cement-based material
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