土遗址防风化保护概况

On the Conservation against Efflorescence of Earthen Sites

土遗址的风化表现为遗址的表面在各种环境因素的作用下,原来因各种因素作用互相结合的土体颗粒之间的结合力减弱或消失,颗粒间距加大以至脱落,使表面减薄、形貌改变,由此造成承载文化信息的表层破坏的现象。探讨土遗址表面风化的原因、机理,以及对防风化保护材料的应用性研究,对保护大批濒临破坏的土遗址具有重要意义。

the efflorescence of earthen sites represents that the surface on the sites, under the influence of all kinds of environmental complication, the binding strength among the earthen grains got weaken of disappeared, and largened the space between the grains, so much as fallen off each other, which makes the surface thin and changes the look of the surface, therefore the surface dealing the cultural data is destroyed, and this phenonenon is named the efflorescence of earthen site. So it is important for protecting a plenty of earthen sites from being destroyed to discuss the cause, mechanism of the surface on the sites, and study on the use ol the materials for preventing efflorescence.