成型振动荷载对干硬性混凝土路缘石性能影响  

INFLUENCE OF THE PERFORMANCE OF STIFF CONCRETE CURBS UNDER MOLDING VIBRATION LOAD

作　　者：贾义卫 张文伦 徐磊 王先亮 樊伟 JIA Yiwei;ZHANG Wenlun;XU Lei;WANG Xianliang;FAN Wei(Shandong Jinpeng Transportation Energy Technology Co.,Ltd.,Shandong Jining 272413,China;Shandong Caspian Sea Engineering Technology Co.,Ltd.,Jinan 250003,China)

机构地区：[1]山东金鹏交通能源科技有限公司,山东济宁272413 [2]山东里海工程技术有限公司,济南250003

出　　处：《低温建筑技术》2023年第4期49-52,共4页Low Temperature Architecture Technology

摘　　要：更低的水灰比和更高的成型振动荷载是提高干硬性混凝土路缘石性能的重要手段,文中研究了不同成型振动荷载激励条件下超低水灰比干硬性混凝土路缘石的性能。结果表明在水灰比为0.18条件下,成型振动荷载为15MPa,可以使干硬性混凝土路缘石的力学性能、吸水率和抗冻性达到最佳。过低的水胶比对路缘石力成型合格率、力学性能、吸水率和耐久性的改善作用相对有限,过高的成型振动荷载会造成浆体外溢,降低路缘石的力学性能和耐久性。文中为干硬性路缘石的开发生产提供了技术参考。Low water-cement ratio and higher forming vibration load are important means to improve the compre⁃hensive performance of dry and hard concrete kerbs.This paper studies the performance of ultra-low water-cement ratio dry and hard concrete kerbs under different forming vibration load excitation conditions.The results show that the mechanical properties,water absorption,and the frost resistance reach the best when the water cement ratio is 0.18 and the forming vibration load is 15MPa.Low water-binder ratio has relatively limited effectiveness on the im⁃provement of the mechanical forming qualification rate,mechanical properties,water absorption,and durability of curbstone.High forming vibration load causes slurry overflow and reduces the mechanical properties and durability of curbstone.This paper may provide the reference for the development of dry and hard curbs.

关 键 词：干硬性混凝土 路缘石 水灰比 成型振动荷载 

分 类 号：TU502[建筑科学—建筑技术科学]