ISO 679:2009规定了一种测定水泥砂浆抗压强度和（可选）抗折强度的方法，该水泥砂浆含有一份（按质量计）、三份（按质量计）ISO标准砂和一半（按质量计）水。ISO 679:2009适用于普通水泥和其他水泥和材料，其标准要求使用该方法。ISO 679:2009可能不适用于初凝时间非常短的其他水泥类型。 ISO 679:2009描述了参考设备和程序，并规定了用于ISO标准砂和替代设备和程序验证测试的方法。

ISO 679:2009 specifies a method of determining the compressive and, optionally, the flexural strength of cement mortar containing one part by mass of cement, three parts by mass of ISO standard sand and one half part of water. ISO 679:2009 applies to common cements and to other cements and materials, the standards for which call up this method. ISO 679:2009 might not apply to other cement types that have, for example, a very short initial setting time. ISO 679:2009 describes the reference equipment and procedure and specifies the method used for validation testing of ISO standard sands and of alternative equipment and procedures.