美国标准(AASHTO M247)玻璃珠

质量要求标准

外观

比重

成圆率

折射率

玻璃成分 

玻璃珠应为无色透明的球体,光洁圆整,无明显气泡或杂质。在容器中的状态应为松散的球状颗粒,清洁无杂质,并不含有结块物。

20+/-2摄氏度
的二甲苯中

2.4~2.6/立方厘米

有缺陷的玻璃珠质量小于玻璃珠质量的30%,即玻璃珠成圆率不小于80%
粒径在850~600um的玻璃珠成圆率不应小于75%

折射率>=1.5

钠钙玻璃,Sio2>68%

 

粒径分布

 

1

AASHTO M247

>850

0

两种型号的产品均采用双层防水镀膜工艺,产品偶联性更强!

850~600

5~25

600~300

40~80

300~150

10~35

<150

0~5

2

>600

0

600~425

0~10

425~300

15~50

300~180

45~75

<180

0~5

 

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