Study on the Strength Characteristics and Mechanism of Weathered TUFF

Many countries in the world has a large number of tuff like cultural relics that have many historical history. These kinds of cultural relics tuff have experienced many natural weathering in the long historical years. Natural weathering like air pollution since industrialization, acid rain erosion and many different degrees of artificial damage, they are suffering from different degrees of surface degradation and decay, erosion and even destruction and a strong typhoon effect. Under consideration and effective protective measures are not taken, irreparable losses will be caused. People who are coming for tourism to look at the historical and cultural relics are in danger. Therefore, it is urgent to deeply study the weathering damage mechanism of stone cultural relics, and to develop stone cultural relics protection materials and construction technical measures. In this paper we will research by understanding the theoretical characteristics and relationship between tuff strength and weathering degree and weathering damage mechanism of stone, and characteristics of rock and mineral composition so that we can theoretically address by studying the weathering damage mechanism. Keywords: Natural stone decay; tuff materials, rock mechanics, weathering damage.