水硬石灰在花山岩画加固保护中的应用研究

水硬石灰兼具石灰和水泥的优点,低收缩、耐盐、适中的抗压和抗折强度、水溶盐含量低,同时与传统的砖石建筑兼容性好,是一种天然、无污染、耐老化的无机材料。本工作针对花山岩画的开裂特点制订出相应的力学参数要求,配制出两种不同的水硬石灰砂浆,并对这两种砂浆的力学性能进行了分析。同时探讨了不同养护条件对水硬石灰砂浆拉拔强度的影响。现场试验结果说明,填补粘结材料可以提供一定的粘结强度,并且具有使用方便,污染小的特点,可用于花山岩画开裂岩体应急保护加固处理。

Study on hydraulic lime mortar used for consolidation of Huashan rock paintings

Hydraulic lime has the advantages of both lime and cement.It has low shrinkage,good antisalting properties,medium compressive and flexural strength,a low content of soluble salts and compatibility with the traditional masonry materials.It is a natural,pollutionfree and antiaging material.The focus of this research is to describe the mechanical requirements of a mortar,based on the characteristics of cracks in Huashan rocks.Based on these requirements,two kinds of binding mortar were prepared and the mechanical performance of each was tested.Also the relationship of different preservation conditions and the tensile strength of the mortar were discussed.Insite experiments show that the mortars can provide bonding strength for the rock.The mortar is also userfriendly and produces little pollution.Hydraulic lime mortar can be applied to cracks in the Huashan rock paintings in case of emergency.