摘要
在水灰比和水泥用量相同的情况下,配制骨料分维值分别为2.2、2.3、2.4、2.5的碎石混凝土,进行力学性能以及阻尼比和频率的测试。实验结果显示:随着骨料分维值的增加,混凝土的抗压和劈裂强度和固有频率先迅速增大而后逐渐减小。而阻尼比则是先迅速降低而后逐渐增加。因阻尼比和骨料之间的啮合程度和密实度有关,所以改变骨料分维值对混凝土阻尼比有一定的调节作用。
In the same water-cement ratio and cement dosage,preparation of aggregate fractal dimension values for 2.2,2.3,2.4,2.5 of gravel concrete,mechanical properties and damping ratio and frequency of testing.The experimental results show that: With the increase of the aggregate fractal dimension value,the concrete compressive strength and splitting strength and natural frequency first increases rapidly and then gradually decreases.And damping ratio is quickly reduce and then gradually increased.Between damping ratio and the aggregate the meshing extent and density,to change the aggregate fractal dimension values on the Damping Ratio of the regulation.
出处
《内蒙古农业大学学报（自然科学版）》
CAS
北大核心
2012年第Z1期321-324,共4页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
关键词
骨料分维级配
强度
阻尼比
频率
Aggregate fractal dimension of gradation
Strength
damping ratio
natural frequency
