一、引言高强混凝土的发展和应用已经有很多年的历史了。高强混凝土的定义在北美随着它的发展已经有了改变。在50年代,混凝土抗压强度达到34MPa就被认为是高强混凝土了。在60年代,41～52MPa的混凝土已经实现了商品化。在70年代初,62MPa的混 I. INTRODUCTION The development and application of high-strength concrete has been for many years. The definition of high-strength concrete has changed in North America with its development. In the 1950s, the compressive strength of concrete reached 34 MPa was considered as high-strength concrete. In the 1960s, 41 to 52 MPa of concrete had been commercialized. In the early 70s, 62 MPa was mixed