Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention relates to an anti-freezing agent for improving frost heaving stress of concrete and a preparation method of the anti-freezing agent. The anti-freezing agent is prepared from the following raw materials in parts by weight: 20 to 25 parts of polycarboxylate superplasticizer, 4 to 8 parts of high-dispersion nano material, 8 to 12 parts of polyethylene glycol, 3 to 6 parts of sodium sulfate, 9 to 12 parts of sodium carboxymethyl cellulose and 40 to 50 parts of deionized water. According to the invention, the high-dispersion nano-material is doped into a conventional component formula of concrete, the high-dispersion nano-material is obtained by depositing nano-titanium dioxide on mesoporous silica, and the high-dispersion nano-material is doped into the concrete as an antifreezing agent component, so that the dispersion performance of the antifreezing agent in the concrete can be improved, and further filling of concrete pores is facilitated; the micro-morphology of the concrete is compact, so that the anti-permeability performance and the compactness of the concrete are improved, the permeation of water is reduced, and the anti-freezing performance is correspondingly improved.
本发明涉及一种改善混凝土冻胀应力的防冻剂及其制备方法，包括以下重量份的原料：聚羧酸减水剂20‑25份，高分散纳米材料4‑8份，聚乙二醇8‑12份、硫酸钠3‑6份、羧甲基纤维素钠9‑12份和去离子水40‑50份。本发明在混凝土常规组分配方中掺入高分散纳米材料，高分散纳米材料是通过将纳米二氧化钛沉积在介孔二氧化硅上而得到的，其作为防冻剂组分掺入混凝土中，能够提高防冻剂在混凝土中的分散性能，有利于进一步填补混凝土孔隙，使混凝土的微观形貌密实，从而改善了混凝土的抗渗性能和密实度，减少了水分的渗入，防冻性能相应提升。
The invention relates to an anti-freezing agent for improving frost heaving stress of concrete and a preparation method of the anti-freezing agent. The anti-freezing agent is prepared from the following raw materials in parts by weight: 20 to 25 parts of polycarboxylate superplasticizer, 4 to 8 parts of high-dispersion nano material, 8 to 12 parts of polyethylene glycol, 3 to 6 parts of sodium sulfate, 9 to 12 parts of sodium carboxymethyl cellulose and 40 to 50 parts of deionized water. According to the invention, the high-dispersion nano-material is doped into a conventional component formula of concrete, the high-dispersion nano-material is obtained by depositing nano-titanium dioxide on mesoporous silica, and the high-dispersion nano-material is doped into the concrete as an antifreezing agent component, so that the dispersion performance of the antifreezing agent in the concrete can be improved, and further filling of concrete pores is facilitated; the micro-morphology of the concrete is compact, so that the anti-permeability performance and the compactness of the concrete are improved, the permeation of water is reduced, and the anti-freezing performance is correspondingly improved.
本发明涉及一种改善混凝土冻胀应力的防冻剂及其制备方法，包括以下重量份的原料：聚羧酸减水剂20‑25份，高分散纳米材料4‑8份，聚乙二醇8‑12份、硫酸钠3‑6份、羧甲基纤维素钠9‑12份和去离子水40‑50份。本发明在混凝土常规组分配方中掺入高分散纳米材料，高分散纳米材料是通过将纳米二氧化钛沉积在介孔二氧化硅上而得到的，其作为防冻剂组分掺入混凝土中，能够提高防冻剂在混凝土中的分散性能，有利于进一步填补混凝土孔隙，使混凝土的微观形貌密实，从而改善了混凝土的抗渗性能和密实度，减少了水分的渗入，防冻性能相应提升。
Anti-freezing agent for improving frost heaving stress of concrete and preparation method of anti-freezing agent
一种改善混凝土冻胀应力的防冻剂及其制备方法
LI CHUN (Autor:in)
11.11.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2022
| Europäisches Patentamt | 2022
Ground Freezing and Frost Heaving
| NTIS | 1962