A diagnosis of the genus Pachypeltis Signoret, 1858 is provided and one new species, P. micranthus sp. nov., is described from Yunnan, China. Photographs of the dorsal habitus and illustrations of the male genitalia o...A diagnosis of the genus Pachypeltis Signoret, 1858 is provided and one new species, P. micranthus sp. nov., is described from Yunnan, China. Photographs of the dorsal habitus and illustrations of the male genitalia of this new species are provided. A key to the species of Pachypeltis occurring in China is given.展开更多
Often masonry walls of historical buildings are subject to rising damp effects due to capillary or rain infiltrations. In the time, their cyclic action produces decay and delamination of historical plasters. An experi...Often masonry walls of historical buildings are subject to rising damp effects due to capillary or rain infiltrations. In the time, their cyclic action produces decay and delamination of historical plasters. An experimental laboratory procedure for the pre-qualification of repair mortars is described. Long-term plaster delamination frequently occurs because of the mechanical incompatibility of new repair mortars. The tested mortars are suitable for new dehumidified plasters applied to historical masonry walls. Compression static tests were carried out on composite specimens stSone block-repair mortar, which specific geometry can test the de-bonding process of mortar in adherence with historical masonry structure. A numerical simulation based on the cohesive crack model was used to follow the experimental data, in order to describe the evolutionary phenomenon of de-bonding as a function of a small number of parameters. This method supplies useful indication for selecting the product that is best in keeping with the mechanical characteristics of the historical material, thereby avoiding errors associated with materials that are not mechanically compatible. Currently, the methodology is being used at Sacro Monte di Varallo Special Natural Reserve （UNESCO heritage site） in Piedmont （Italy）.展开更多
基金supported by the National Natural Science Foundation of China(31093430,30770248)the Tianjin Science&Technology Development Foundation for Higher School(20140606)
文摘A diagnosis of the genus Pachypeltis Signoret, 1858 is provided and one new species, P. micranthus sp. nov., is described from Yunnan, China. Photographs of the dorsal habitus and illustrations of the male genitalia of this new species are provided. A key to the species of Pachypeltis occurring in China is given.
文摘Often masonry walls of historical buildings are subject to rising damp effects due to capillary or rain infiltrations. In the time, their cyclic action produces decay and delamination of historical plasters. An experimental laboratory procedure for the pre-qualification of repair mortars is described. Long-term plaster delamination frequently occurs because of the mechanical incompatibility of new repair mortars. The tested mortars are suitable for new dehumidified plasters applied to historical masonry walls. Compression static tests were carried out on composite specimens stSone block-repair mortar, which specific geometry can test the de-bonding process of mortar in adherence with historical masonry structure. A numerical simulation based on the cohesive crack model was used to follow the experimental data, in order to describe the evolutionary phenomenon of de-bonding as a function of a small number of parameters. This method supplies useful indication for selecting the product that is best in keeping with the mechanical characteristics of the historical material, thereby avoiding errors associated with materials that are not mechanically compatible. Currently, the methodology is being used at Sacro Monte di Varallo Special Natural Reserve （UNESCO heritage site） in Piedmont （Italy）.
