摘要
Abstract
To study the performance evolution law and strengthening mechanism of basalt fiber concrete,in this paper,basalt fiber concrete specimens with different volume dosings were prepared and compressive,flexural,carbonation and impact tests were carried out.The influence of basalt fiber on the mechanics and durability of slope protection concrete was deeply analyzed,and the pore structure was analyzed by mercury intrusion method.The results show that the addition of an appropriate amount of basalt fiber can significantly improve the mechanical properties,durability and impact toughness of concrete.Among them,the 0.20％dosage group performed the best.At the age of 28 days,its compressive strength increased by 12.4％compared with the reference group,the tensile and flexural strength increased by 24.4％,and the carbonization depth decreased by 18.13％.In addition,the uniformity of fiber distribution has a crucial impact on performance.If uneven stirring leads to fiber agglomeration,it can easily cause local stress concentration,thereby weakening the reinforcing effect.关键词
护坡混凝土/玄武岩纤维/力学性能/耐久性能Key words
Slope protection concrete/Basalt fiber/Mechanical properties/Durability performance分类
建筑与水利
