CT技术的低水泥含量级配碎石基层材料性能  

Properties of low cement macadam base material based on CT technology

作　　者：张彬[1] 张林江 杨欢 石云华 

机构地区：[1]辽宁工程技术大学土木工程学院,辽宁阜新123000 [2]阜新市交通局,辽宁阜新123000

出　　处：《辽宁工程技术大学学报（自然科学版）》2017年第12期1275-1278,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：国家安监总局项目(0505079);辽宁省教育厅项目(1.2011048)

摘　　要：为研究低水泥含量级配碎石基层材料的性能,采用医用CT扫描技术,对基层材料的试件断面进行扫描试验,获得低水泥含量级配碎石基层材料CT图像,并通过影像特征探究级配碎石的宏观力学破坏与内部细观变化规律,得出内部损伤与温度,孔结构与抗压强度的关系.试验结果表明:温度对低水泥含量级配碎石材料的抗压强度影响较小;利用CT扫描技术,发现对材料影响最大的温度阀值段为-15℃至-30℃之间.In order to study low cement grades macadam base material performance, this paper carried out specimen cross-section scanning test of base material by using of medical CT scanning technology, and obtained a low cement content graded macadam CT images. The macroscopic mechanical failure and internal microscopic changes of graded macadam were studied by image features to obtain the relationship between internal damage and temperature, pore structure and compressive strength. Test results show that the temperature of low cement content of graded aggregate material compressive strength has little effect; using CT scanning technology, this study finds out that the maximum temperature threshold segment is between-15℃ to 30℃.

关 键 词：低水泥含量级配碎石 基层材料 CT扫描技术 影像特征 宏观力学 内部损伤 

分 类 号：TU414[建筑科学—岩土工程]