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A platform for research: civil engineering, architecture and urbanism
Freeze-thaw resistant modifier and application thereof
The invention discloses a freeze-thaw resistant modifier and application thereof, and belongs to the technical field of material modification. The freeze-thaw resistant modifier provided by the invention is prepared from the following raw materials in parts by mass: 0.1-6 parts of an air entraining agent, 1-30 parts of nanoparticles, 0-400 parts of filler and 0-5 parts of a water reducing agent, the nanoparticles are selected from nanometer aluminum oxide. The nano aluminum oxide is introduced into the freeze-thaw resistant modifier, so that the diameter and distribution of foam pores in the air-entraining concrete can be effectively controlled, the effect of stabilizing the foam pores is achieved, the nano aluminum oxide has good compatibility with a cement material, the physical properties such as compression resistance and fracture resistance of the material can be enhanced, the influence on the fluidity of cement is less, and the performance of the concrete is improved. According to the present invention, the nano-alumina is added to the air entraining agent, such that the air entraining agent has good interface bonding force with the cement matrix, the alumina has good dispersion performance, and does not easily produce agglomeration collapse phenomena, such that the nano-alumina and the air entraining agent are matched to serve as the freeze-thaw resistance modifier so as to effectively improve the freeze-thaw resistance, the compression resistance and the fracture resistance of the air entraining concrete.
本发明公开了一种抗冻融改性剂及其应用，属于材料改性技术领域。本发明提供的抗冻融改性剂包括以下质量份数的制备原料：0.1～6份引气剂、1～30份纳米颗粒、0～400份填料、0～5份减水剂；所述纳米颗粒选自纳米氧化铝。本发明在抗冻融改性剂中引入纳米氧化铝，能够有效控制引气混凝土中泡孔的直径和分布，并起到稳定泡孔的作用，且纳米氧化铝的与水泥材料有良好的兼容性，能增强材料的抗压抗折等物理性能，对水泥流动性的影响较少，可使其与水泥基质具有良好的界面结合力，氧化铝的分散性能良好，不易发生团聚坍缩现象，因此采用纳米氧化铝与引气剂配合作为抗冻融改性剂，可有效提高引气混凝土的抗冻融性、抗压性能和抗折性能。
Freeze-thaw resistant modifier and application thereof
The invention discloses a freeze-thaw resistant modifier and application thereof, and belongs to the technical field of material modification. The freeze-thaw resistant modifier provided by the invention is prepared from the following raw materials in parts by mass: 0.1-6 parts of an air entraining agent, 1-30 parts of nanoparticles, 0-400 parts of filler and 0-5 parts of a water reducing agent, the nanoparticles are selected from nanometer aluminum oxide. The nano aluminum oxide is introduced into the freeze-thaw resistant modifier, so that the diameter and distribution of foam pores in the air-entraining concrete can be effectively controlled, the effect of stabilizing the foam pores is achieved, the nano aluminum oxide has good compatibility with a cement material, the physical properties such as compression resistance and fracture resistance of the material can be enhanced, the influence on the fluidity of cement is less, and the performance of the concrete is improved. According to the present invention, the nano-alumina is added to the air entraining agent, such that the air entraining agent has good interface bonding force with the cement matrix, the alumina has good dispersion performance, and does not easily produce agglomeration collapse phenomena, such that the nano-alumina and the air entraining agent are matched to serve as the freeze-thaw resistance modifier so as to effectively improve the freeze-thaw resistance, the compression resistance and the fracture resistance of the air entraining concrete.
本发明公开了一种抗冻融改性剂及其应用，属于材料改性技术领域。本发明提供的抗冻融改性剂包括以下质量份数的制备原料：0.1～6份引气剂、1～30份纳米颗粒、0～400份填料、0～5份减水剂；所述纳米颗粒选自纳米氧化铝。本发明在抗冻融改性剂中引入纳米氧化铝，能够有效控制引气混凝土中泡孔的直径和分布，并起到稳定泡孔的作用，且纳米氧化铝的与水泥材料有良好的兼容性，能增强材料的抗压抗折等物理性能，对水泥流动性的影响较少，可使其与水泥基质具有良好的界面结合力，氧化铝的分散性能良好，不易发生团聚坍缩现象，因此采用纳米氧化铝与引气剂配合作为抗冻融改性剂，可有效提高引气混凝土的抗冻融性、抗压性能和抗折性能。
Freeze-thaw resistant modifier and application thereof
一种抗冻融改性剂及其应用
SUN GUOXING (author) / LI XUE (author)
2024-08-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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