As one of building material, concrete has a history more than 100 years, Cement-based materials is the largest amount of man-made building materials. As an important structure material, strength is a central capability of concrete, high-strength is the direction of research and development in recent years. But the inherent weaknesses-poor capability of tensile strength, bending strength, impact toughness, has been limited the development of concrete’s advantage, and, with the increase of strength, the weakness became more and more seriously. With the continuous development of modern technology of civil engineering, human request higher and higher about long-term safety testing and monitoring of major projects. So, the research about long-term safety testing and monitoring of major projects is an important scientific and technical issues.
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