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(1 湖南大學土木工程學院, 長沙 410006; 2 許昌金科資源再生股份有限公司, 許昌 461000;3 許昌學院土木工程學院, 許昌 461000)
摘要: 為研究通過超薄灰縫連接的燒結棄土高性能砌塊砌體的受力性能,對砌體進行受壓、受剪試驗研究,分析其破壞特征、極限承載力和受力機理。 試驗結果表明:由于豎縫均采用互鎖形式,超薄灰縫燒結棄土高性能砌塊砌體受壓試件主裂縫為沿砌體豎縫的全通縫,且寬面部分出現(xiàn)剝落現(xiàn)象;受剪破壞時砂漿攜帶少量砌塊表面剝離,需進一步提高砌塊自身粘接強度;當水平灰縫厚度達到 2mm 時能有效提高砌體抗壓、抗剪強度,建議在超薄灰縫砌體的施工中灰縫厚度采用 2mm;再生預拌特種砂漿可用于超薄灰縫施工中,環(huán)保經(jīng)濟;基于試驗結果提出了相應的抗壓、抗剪強度平均值建議公式。
關鍵詞: 超薄灰縫; 燒結砌塊; 再生預拌特種砂漿; 抗壓強度; 抗剪強度
中圖分類號:TU364 文獻標志碼:A 文章編號:1002-848X(2022)13-0147-06
DOI:10. 19701 / j. jzjg. 20201625
Study on the mechanical properties of ultra-thin layer mortared high performance musk sintered block masonry
HUANG Liang1, ZHANG Yue1, SHI Chuxian1, DENG Peng1, LI Fuan2, GAO Qi2, ZHANG Lei3
(1 School of Civil Engineering, Hunan University, Changsha 410006, China; 2 Xuchang Jinke Resource RecyclingCo. , Ltd. , Xuchang 461000, China; 3 School of Civil Engineering, Xuchang University, Xuchang 461000, China)
Abstract: In order to study the mechanical properties of high performance musk sintered block masonry connected byultra-thin layer, the compressive property and shear strength were tested. And the damage characteristics, ultimate bearing capacity and the damage mechanism were analyzed. The results show that for the form of vertical mortar joint of masonry is interlocked, the main mortar joint of ultra-thin layer mortared high performance musk sintered block masonry compressive specimens appeared in a form of continuous seam along the vertical mortar joint, and the wide surface part has peeling phenomenon. In the case of shear failure, some small amount of block were peeling with mortar, thus the bonding strength of block needs to improve. When the horizontal mortar joint thickness is 2mm, the compressive strength and shear strength of masonry get increased. It is suggested that the thickness of the mortar joint should be 2mm in the construction of the ultra-thin mortar joint masonry. Recycled premixed special mortar can be used in the construction of ultra-thin mortar joint, which is environmentally friendly and economical. According to test results, the calculation formulas of average value of compressive strength and shear strength were put forward.
Keywords:ultra-thin layer; sintered block; recycled premixed special mortar; compressive strength; shear strength
∗“十三五”國家重點研發(fā)計劃資助項目(2019YFC1904700) 。第一作者:黃靚,博士,教 授,主 要 從 事 混 凝 土 與 砌 體 結 構、 固 體 廢 棄 物 資 源 化 利 用 及 建 筑 材 料 低 碳 技 術 的 研 究, Email:huangliangstudy@ 126. com。通信作者:張玥,碩士,主要從事砌體結構研究,Email: zhangyue9607@ 126. com。[引用本文] 黃靚,張玥,施楚賢,等. 超薄灰縫燒結棄土高性能砌塊砌體受力性能研究[ J] . 建筑結構,2022,52(13) :147-152. HUANG Liang,ZHANG Yue,SHI Chuxian,et al. Study on the mechanical properties of ultra-thin layer mortared high performance musk sintered block masonry[ J] . Building Structure,2022,52(13) :147-152.
