不同条件下钢纤维对桥面铺装混凝土力学性能的影响分析  

Analysis of Influence of Steel Fiber on Mechanical Properties of Bridge Deck Pavement Concrete Under Different Conditions

作　　者：李浩 LI Hao(Beijing No.4 Municipal Construction Engineering Co.,Ltd.)

机构地区：[1]北京市市政四建设工程有限责任公司

出　　处：《广东建材》2024年第6期45-48,共4页Guangdong Building Materials

摘　　要：为了探析桥面铺装混凝土在掺加钢纤维后的抗冻性能改善效果,文中对不同条件下钢纤维对桥面铺装混凝土抗冻性能影响进行分析。通过试验得知,混凝土抗折强度和劈裂抗拉强度在掺加钢纤维后改善效果明显,其中混凝土相对劈裂抗拉强度在进行50次冻融循环条件下随钢纤维掺量从0提升至1%和2%时,其提升幅度分别为48.5%和62.0%,掺加2.0%钢纤维后混凝土相对抗折强度相对素混凝土提升约6倍。In order to study the effect of steel fiber on the frost resistance of bridge deck pavement concrete,this paper analyzes the effect of steel fiber on the frost resistance of bridge deck pavement concrete under different conditions.The results show that the bending strength and splitting tensile strength of concrete improved significantly after the addition of steel fiber.When the relative splitting tensile strength of concrete increased from 0 to 1%and 2%with the volume content of steel fiber under 50 freezing-thawing cycles,the increases were 48.5%and 62.0%,respectively.The bending strength of concrete after adding 2.0%steel fiber is about 6 times higher than that of plain concrete.

关 键 词：铺装混凝土 钢纤维 力学性能 影响 

分 类 号：U443.33[建筑科学—桥梁与隧道工程]