土遗址片状剥离加固现场渗透试验

Field penetration test to strengthen the scaling off of earthen sites

中国西北地区存在有大量的土遗址,由于长期受到风吹雨淋及水盐运移导致表面盐分的富集,使表面片状剥离加剧,已经成为土遗址破坏的主要病害之一.通过滴渗和喷洒渗透2种试验,研究了糯米浆液和SH浆液2种新型材料对墙体表面的加固效果,采用检验墙体表面贯入阻力、渗透深度和渗透量的变化检验材料的加固效果.采用红外热成像技术判断加固后的墙体与原有墙体兼容性.结果表明糯米浆液和SH浆液均能作为新的加固土遗址片状剥离的新材料.

There are numerous earthen sites in Northwest China and, because of long-term wind and rain as well as transportation of water-salt, salt became enriched on the surface of those sites, thus exacerbat- ing the scaling off on the surfaces of the earthen sites. This has become one of the most serious factors leading to earthen site damage. This paper researched into the reinforcement effect of SH slurry and gluti- nous rice paste to the surfaces of the sites by using the dropping and spraying test. In order to understand whether this material could effectively strengthen the surface penetration resistance, penetration depths and penetration quality were tested. Infrared imaging technology was used to judge whether the strength- ened walls would be compatible with the original ones. The results showed that both glutinous rice paste and SH slurry can be used as a new material for preventing the scaling off of earthen sites.