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劉林田 ，周欽龍 ，林家興 ，楊彤薇

 

（ 山東送變電工程有限公司 ， 山東 濟南 250000)

摘   要 ：變電站防火墻的砌體填充墻多采用加氣混凝土 ，將硅泥加入加氣混凝土砌塊，可以有效消耗廢棄物、 保護資源。基于此，制備了不同硅泥摻量的加氣混凝土試件，開展干密度、孔隙率和導熱性能測試 ，研究硅泥加氣混凝土的熱工性能、抗凍性能和耐火性能。結果表明：加氣混凝土的干密度、孔隙率、抗壓強度和導熱系數分  別隨硅泥摻量的增大而減小、增大、減小和減小；硅泥摻量 42% ~ 66% 加氣混凝土砌塊的耐火極限均可達 3 h 以上 ，可用來構建變電站防火墻的砌體填充墻。為了保證加氣混凝土的抗凍性能 ，建議硅泥摻量范圍為48%~ 60% 。

關鍵詞：變電站 ；硅泥加氣混凝土 ；密度 ；孔隙率 ；抗壓強度 ；導熱系數 ；耐火性能

中圖分類號：TU528 . 2           

文獻標志碼：A            

文章編號： 1005- 8249   (2024)  04- 0036- 04 

DOI:10. 19860/j.cnki.issn1005 - 8249.2024.04.007

 

LIU Lintian ,  ZHOU Qinlong ,  LIN Jiaxing ,  YANG Tongwei

(Shandong Electrical Power Supply & Transformation Engineering Co. ，Ltd. ，Jinan 250000 ,  China)   

Abstract: The masonry infill wall of substation firewall mostly adopts aerated concrete. Adding silica mud to aerated concrete can effectively consume waste and protect resources. Based on this, aerated concrete specimens with different amounts of silica mud were prepared, and the dry density, porosity and thermal conductivity were tested. The thermal performance, frost resistance and fire resistance of aerated concrete with silica mud were studied. The test results show that: the dry density, porosity, compressive strength and thermal conductivity of aerated concrete decrease, increase, decrease and decrease with the increase of silica mud content, respectively. The fire resistance limit of aerated concrete block can reach more than 3 h under the condition of 42% ~ 66% silica mud addition, which can be used to construct the masonry infilled wall of substation firewall. In order to ensure the frost resistance of aerated concrete, it is recommended that the amount of silica mud added should be in the range of 48% ~ 60%.

Keywords: substation; silica mud aerated concrete; density; porosity; compressive strength; thermal conductivity; fire resistance

作者簡介： 劉林田  (1982—) ,   男 ，碩士 ， 高級工程師 ，研 究方向：變電站工程施工及管理。

收稿日期：2023- 05- 25