特定模数硅酸钾溶液（PS）已广泛的用于我国西北干旱地区土遗址加固保护工程中,并且取得了显著的效果。但是PS对潮湿地区遗址土加固效果,目前尚缺乏成熟的理论和实验验证。本文从室内试验的资料出发,研究PS对潮湿地区土遗址非饱和土的...特定模数硅酸钾溶液（PS）已广泛的用于我国西北干旱地区土遗址加固保护工程中,并且取得了显著的效果。但是PS对潮湿地区遗址土加固效果,目前尚缺乏成熟的理论和实验验证。本文从室内试验的资料出发,研究PS对潮湿地区土遗址非饱和土的增强效应。本次研究土样取自位于潮湿环境中的浙江杭州良渚土遗址（3000 B C.）,在实验室内对高含水量（13%~25%）的重塑土样进行了PS渗透加固。通过研究对比加固前后重塑土样的固结特性和抗剪强度,发现PS对潮湿地区遗址土也有一定的加固效果。加固效果随初始饱和度的不同而不同,但初始含水量达25%的土在PS作用下仍可能得到增强。经PS渗透的土样不仅提高了初始固结性能和抗剪强度,而且加固土样而且呈现出一定的弹脆性特征,呈现出塑脆性转化,表明PS渗透可能产生对土初始结构的稳固作用。这一探索研究将为扩大PS在土遗址加固保护工程的应用提供一定的理论支持。展开更多
An organic-inorganic epoxy-silica-acrylate(ESA) hybrid material was used for the consolidation of Jinsha archaeological site of Chengdu in China.The hybrid materials have multiple functional groups,such as anhydride,e...An organic-inorganic epoxy-silica-acrylate(ESA) hybrid material was used for the consolidation of Jinsha archaeological site of Chengdu in China.The hybrid materials have multiple functional groups,such as anhydride,epoxy,hydroxyl and carboxyl,which can form networks at room temperature and result in an enhanced chemical and water resistance of the consolidated soil.With increasing of TEOS content,the hybrid materials keep colorless with only some reduction of transparency,while the hybrid materials obviously turn from moderate yellowish to brown yellow with the increase of the epoxy resin(EOR) content after 120 min UV irradiation.SEM observation indicates that the hybrid soil consolidation materials can effectively penetrate into the soil substrate,fill up most of the pores,decrease the area porosity and consolidate the Jinsha archaeological soil.The consolidation performances are in the sequence:ESA > K2SiO4(PS) > tetraethyl orthosilicate(TEOS).展开更多
文摘特定模数硅酸钾溶液（PS）已广泛的用于我国西北干旱地区土遗址加固保护工程中,并且取得了显著的效果。但是PS对潮湿地区遗址土加固效果,目前尚缺乏成熟的理论和实验验证。本文从室内试验的资料出发,研究PS对潮湿地区土遗址非饱和土的增强效应。本次研究土样取自位于潮湿环境中的浙江杭州良渚土遗址（3000 B C.）,在实验室内对高含水量（13%~25%）的重塑土样进行了PS渗透加固。通过研究对比加固前后重塑土样的固结特性和抗剪强度,发现PS对潮湿地区遗址土也有一定的加固效果。加固效果随初始饱和度的不同而不同,但初始含水量达25%的土在PS作用下仍可能得到增强。经PS渗透的土样不仅提高了初始固结性能和抗剪强度,而且加固土样而且呈现出一定的弹脆性特征,呈现出塑脆性转化,表明PS渗透可能产生对土初始结构的稳固作用。这一探索研究将为扩大PS在土遗址加固保护工程的应用提供一定的理论支持。
基金Project(2004BA810B02)supported by the 10th Five Years Key Programs for Science and Technology Development of China
文摘An organic-inorganic epoxy-silica-acrylate(ESA) hybrid material was used for the consolidation of Jinsha archaeological site of Chengdu in China.The hybrid materials have multiple functional groups,such as anhydride,epoxy,hydroxyl and carboxyl,which can form networks at room temperature and result in an enhanced chemical and water resistance of the consolidated soil.With increasing of TEOS content,the hybrid materials keep colorless with only some reduction of transparency,while the hybrid materials obviously turn from moderate yellowish to brown yellow with the increase of the epoxy resin(EOR) content after 120 min UV irradiation.SEM observation indicates that the hybrid soil consolidation materials can effectively penetrate into the soil substrate,fill up most of the pores,decrease the area porosity and consolidate the Jinsha archaeological soil.The consolidation performances are in the sequence:ESA > K2SiO4(PS) > tetraethyl orthosilicate(TEOS).
