《Table 1Schedule of peak damage rate》

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《Dynamic Mechanical Properties of EPS Concrete Under Impact Loading》

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Figure 5 reveals the relationship between aggregate contents and damage degree of specimens，and Fig.6 reveals the relationship between contents and crack rates in the same loading regime.Table 1 shows the schedule of specimens’peak damage rate.According to Fig.5，the relationship between damage degree of materials and light-weighting aggregate content presents a positive correlation in the overall viewpoint，and the damage degree of specimens increases obviously with the augment of aggregate content.Figure 6 reveals a phenomenon that curves of cracking rate of specimens with variable aggregate contents are consistent nearly with the relationship curve of velocities during the loading period without consideration of occasional errors.A law of the peak value and the moment of damage rate peak can be obtained according to Table 1.The peak moment will be shortened as the impact velocity increases.Meanwhile，for cracking rate，its peak value of specimens with variable aggregate contents increases nearly with the increase of aggregates in specimen.Furthermore，the maximum of peak values on cracking rate exists on intermediate situation of contents（content of40%in this paper）.And the overall relationship of peak values presents an obvious trend that the wave peak occurs in middle stage while the wave village spreads through the elementary and the end stage，which is similar nearly with a“hump”winding.