日本研制出一种新型混凝土——碳纤维混凝土。这是一种长达3～10毫米的碳纤维作为添加料的混凝土(掺含量为2～4%),其容重只及普通钢筋混凝土的1/3,但抗拉强度却可以提高10至15倍,抗弯强度增加5倍以上。采用新型混凝土可使建筑物的钢材用量大幅度减少(至少可减少1/6),因而建筑物的造价可大大下降。 Japan has developed a new type of concrete, carbon fiber concrete. This is a type of concrete with 3 to 10 mm of carbon fiber as an additive (with a content of 2 to 4%). Its bulk density is only 1/3 that of ordinary reinforced concrete, but its tensile strength can be increased by 10 to 15 times. , bending strength increased more than 5 times. The use of new types of concrete can result in a significant reduction in the amount of steel used in buildings (at least one-sixth the reduction), and the cost of buildings can be greatly reduced.