Methods of testing concrete, Method 18: Determination of setting time of fresh concrete, mortar and grout by penetration resistance
混凝土试验方法 方法18:通过抗渗透性测定新拌混凝土、砂浆和灌浆的凝结时间
Specifies procedures for determining the initial and final setting times of mortar sieved from fresh concrete mix, the slump of which is greater than zero, using penetration resistance needles. This Standard is also applicable to fresh mortar and grout.