海洋集料混凝土力学性能试验研究  

EXPERIMENTAL STUDY ON MECHANICAL PROPERTY OF MARINE AGTED CONCRETE

作　　者：王占魁 孙磊 潘武汉 张建昌 孟媛 魏国庆 WANG Zhankui;SUN Lei;PAN Wuhan;ZHANG Jianchang;MENG Yuan;WEI Guoqing(Weifang Bailanghe Reservoir Operation and Maintenance Center,Shandong Weifang 261052,China;School of Civil Engineering and Architecture,Shandong University of Science and Technology,Shandong Qingdao 266590,China;Jinan Yellow River Road and Bridge Construction Group Co.,Ltd.,Jinan 250013,China;School of Civil Engineering,Qingdao City University,Shandong Qingdao 266106,China;Qingdao Highway Development Center,Shandong Qingdao 266071,China)

机构地区：[1]潍坊市白浪河水库运营维护中心,山东潍坊261052 [2]山东科技大学土木工程与建筑学院,山东青岛266590 [3]济南黄河路桥建设集团有限公司,济南250013 [4]青岛城市学院土木工程学院,山东青岛266106 [5]青岛市公路事业发展中心,山东青岛266071

出　　处：《低温建筑技术》2023年第7期65-68,72,共5页Low Temperature Architecture Technology

摘　　要：为研究改变水泥用量对混凝土的力学性能及破坏模式,文中通过控制水泥用量研究珊瑚和火山渣混凝土的力学性能,设计完成了海水海砂珊瑚石/火山渣混凝土的相关试验研究。结果表明随着混凝土中水灰比(增加水泥用量)的降低,两类混凝土的抗压强度在逐渐变大,且强度变化规律与水灰比呈负线性相关。海水海砂珊瑚石混凝土(CAC)轴压强度比在0.86~0.92区间,海水海砂火山渣混凝土(SVC)的轴压强度比在0.87~0.93之间。研究发现当混凝土抗压强度相近时,SVC的劈裂强度要高于CAC,但其弹性模量反而要低。通过SEM测试发现SVC和CAC的微观破坏模式明显区别于普通混凝土(NAC)。To study the mechanical properties and failure modes of concrete by changing the amount of cement,this paper studied the mechanical properties of coral and volcanic slag concrete.By controlling the amount of cement,the experimental research of seawater sea sand coral/volcanic slag concrete are carried out.The results show that the compressive strength of the two types of concrete gradually increases with the decrease of the water-cement ratio(in⁃creasing the amount of cement)in the concrete,and the strength is with linear relationship with the water-cement ra⁃tio.The axial compressive strength ratio of seawater sea-sand coral concrete(CAC)is between 0.86 and 0.92,and that of seawater sea-sand volcanic slag concrete(SVC)is between 0.87 and 0.93.When the compressive strength of the concrete is similar,the splitting strength of SVC is higher than that of CAC,but its elastic modulus is lower.The microscopic failure modes of SVC and CAC is different from those of normal concrete(NAC)through SEM tests.

关 键 词：海洋集料混凝土 力学性能 破坏模式 应力-应变全曲线 

分 类 号：TU528.041[建筑科学—建筑技术科学]