AASHTO T 21M/T 21-20涵盖了两个程序，用于大致测定水硬性水泥砂浆或混凝土中使用的细骨料中有害有机化合物的存在。一个程序使用玻璃颜色标准，另一个使用标准颜色溶液。该方法符合ASTM C 40-04，但第5.2节和第9.2节之间的文本移位除外。包括2016年勘误表——在第9.2节中，“750毫升”和“21/2小时”的值不正确。显示的正确值为“75毫升”和“2小时”。

AASHTO T 21M/T 21-20 covers two procedures for an approximate determination of the presence of injurious organic compounds in fine aggregates that are to be used in hydraulic cement mortar or concrete. One procedure uses a glass color standard and the other uses a standard color solution.This method agrees with ASTM C 40-04, except for shifting of text between Sections 5.2 and 9.2.Includes 2016 Errata - In Section 9.2, the "750-mL" and "21/2 h" values are incorrect. The correct values are "75-mL" and "2h" are shown.