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几处古城墙泥灰类粘结材料的对比试验研究 |
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COMPARATIVE EXPERIMENTAL RESEARCH ON MORTAR BONDING MATERIALS USED IN SEVERAL ANCIENT CITY WALLS |
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摘要 通过对四处古城墙遗址泥灰类粘结材料取样,利用排水法、X射线衍射仪(XRD)、热重-差热分析(DSC-TG)、X射线荧光光谱分析(XRF)、傅立叶红外(FT-IR)、扫描电镜显微镜(SEM)以及碘-淀粉试验等测试手段,系统分析了代表样的物理性能、化学及物相组成和组分配合比。试验结果表明:泥灰类粘结材料的密度在1.81~2.20 g/cm3之间,其抗压强度最大达5.23 MPa;泥灰类粘结材料的无机物主要是方解石晶型的碳酸钙,其含量在87.8%~96.8%之间;其有机物为尚未完全降解的糯米支链淀粉成分。正是糯米浆与石灰这种无机/有机相互协同的效应,使得泥灰类粘结材料具有优良的力学性能。 |
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关键词: 古城墙
泥灰类粘结材料
碳酸钙
糯米支链淀粉
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Abstract:
Mortar bonding materials used in four ancient city wall ruins were firstly sampled in this paper. By using micro and macro testing methods such as drainage method, X-ray diffraction (XRD), thermo gravimetric and differential thermal analysis (DSC-TG), X-ray fluorescence spectral analysis (XRF), Fourier transform infrared (FT-IR), scanning electron microscope (SEM)and so on, and iodine-starch test, their physical property, chemical composition, phase constituents and component ratio were analyzed. The experimental results show that apparent density of mortar bonding materials is between 1.81 g/cm3 and 2.20g/cm3 and their compressive strength is up to 5.23MPa. Inorganic of mortar bonding materials is mainly calcium carbonate of calcite crystal whose content is between 87.8% and 96.8%. Organic component is rice amylopectin that is not yet fully biodegradable. This is the effect of inorganic-organic coordination between sticky-rice and lime makes mortar bonding materials have excellent mechanical properties.
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Key words: ancient city wall mortar bonding materials calcium carbonate sticky-rice amylopectin |
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引用本文: |
李广燕,张云升,倪紫威. 几处古城墙泥灰类粘结材料的对比试验研究[J]. 建筑技术, 2012, 43(5): 465-468.
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LI Guang-yan,ZHANG Yun-sheng,NI Zi-wei. COMPARATIVE EXPERIMENTAL RESEARCH ON MORTAR BONDING MATERIALS USED IN SEVERAL ANCIENT CITY WALLS[J]. Architecture Technology, 2012, 43(5): 465-468.
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链接本文: |
http://www.jzjs.com/CN/ 或 http://www.jzjs.com/CN/Y2012/V43/I5/465 |
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