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李國榮¹  ,  劉玉芝²

( 1 .  楊凌職業技術學院 ，楊凌 712100 ;  2.  楊凌工業園區投資創業服務有限公司 ，楊凌 712100)

摘   要 ：為有效降低超輕泡沫混凝土的材料成本，采用 Ⅰ級、 Ⅱ級和Ⅲ級三種不同等級粉煤灰等量替代超輕泡沫混凝土中的高貝利特硫鋁酸鹽水泥，研究不同等級粉煤灰在不同取代率下的超輕泡沫混凝土物理力學性能。結果表明：摻入粉煤灰后可以進一步降低超輕泡沫混凝土的干密度和導熱系數，起到良好的減重和隔熱效果，但同時也會降低超輕泡沫混凝土的強度，增加收縮變形量；采用 Ⅱ級粉煤灰 、取代率為 15% 時，超輕泡沫混凝土的力學性能較佳，干密度 、比強度、導熱系數 、拉伸黏結強度和 28  d 收縮值分別為 302.9kg/cm3 、 1  276. 6 N  ·m/kg 、0. 079 1 W/m ·k 、0. 128 MPa 和 2. 93 mm/m。

關鍵詞：超輕泡沫混凝土 ；高貝利特硫鋁酸鹽水泥 ；粉煤灰 ；取代率

中圖分類號：TU528           

文獻標志碼：A            

文章編號： 1005- 8249   (2025)  01- 0029- 05 

DOI:10. 19860/j.cnki.issn1005 - 8249.2025 .01 .006

 

LI Guorong¹  ,  LIU Yuzhi²

( 1 . Yangling Voactional & Technical College ,  Yangling 712100 ,  China;

2. Yangling Industrial Park Investment Venture Service Co. ，Ltd. ，Yangling 712100 ,  China)

Abstract: In order to effectively reduce the material cost of ultra light foam concrete, three different grades of fly ash, Grade I, Grade II and Grade III, were used to replace the high belite sulphoaluminate cement in ultra light foam concrete equally, and the physical and mechanical properties of different grades of fly ash under different replacement rates were tested. The results show that the addition of fly ash can further reduce the dry density and thermal conductivity of ultra light foam concrete, playing a good role in weight reduction and heat insulation, but it will also reduce the strength of ultra light foam concrete, while increasing the shrinkage deformation; When Grade II fly ash is used and the substitution rate is 15%, the mechanical properties of ultra light foam concrete are better, with dry density, specific strength, thermal conductivity, tensile bond strength and 28 day shrinkage values of 302.9 kg/cm3, 1276.6 N * m/kg, 0.0791 W/m * k, 0.128 MPa and 2.93 mm/m.

Key words: ultralight foam concrete; high belite sulphoaluminate cement; fly ash; Substitution rate

作者簡介： 李國榮  (1984—) ,  男 ，碩士， 副教授 ，研究方向 ：結構工程。

收稿日期：2023 - 02 - 06