本标准提供了测试油井水泥配方的方法，以确定仅在大气压下养护过程（水泥水化）中的尺寸变化。这是一份基础文件，因为在实际固井条件下，收缩和膨胀是在压力和不同的边界条件下发生的。本版API RP 10B-5是ISO 10426-5《石油和天然气工业固井水泥和材料第5部分:常压下固井水泥配方收缩和膨胀的测定》的相同国家标准。

This standard provides the methods for the testing of well cement formulations to determine the dimension changes during the curing process (cement hydration) at atmospheric pressure only. This is a base document, because under real well cementing conditions shrinkage and expansion take place under pressure and different boundary conditions.This edition of API RP 10B-5 is the identical national adoption of ISO 10426-5, Petroleum and natural gas industries-Cements and materials for well cementing- Part 5: Determination of shrinkage and expansion of well cement formulations at atmospheric pressure.