CAJ | 학술논문

对比研究了凝灰岩机制砂和天然河砂配制用于箱梁的C50混凝土时其力学性能和耐久性能的差异。研究结果表明：用于箱梁的凝灰岩机制砂混凝土抗压强度、抗折强度、轴心抗压强度和弹性模量均高于河砂混凝土；抗渗性能和抗裂性能接近河砂混凝土；受压徐变优于河砂混凝土。
대비연구료응회암궤제사화천연하사배제용우상량적C50혼응토시기역학성능화내구성능적차이。연구결과표명：용우상량적응회암궤제사혼응토항압강도、항절강도、축심항압강도화탄성모량균고우하사혼응토；항삼성능화항렬성능접근하사혼응토；수압서변우우하사혼응토。
The difference of mechanical and durability performance between tuff manufactured sand concrete and river sand concrete that be used for box girder is comparative study in this paper. The results show that the compressive strength, bending strength, axial compressive strength, elasticity modulus of concrete which prepared with manufactured sand are better than river sand concrete;the anti-penetrability performance and anti-cracking ability of manufactured sand concrete approach these of river sand concrete;the volume stability of former is better than that of latter.