液压式万能试验机常用于混凝土试块的抗压强度等试验,目前是按照《拉力,压力和万能试验机检定规程》(JJG139-1999)进行计量检定,给出仅是其示值误差的不确定度。针对公路工程行业的特殊要求,这已经不能满足。液压式万能试验机上、下压板之间水平分力引入的不确定度,作为混凝土试块抗压强度检测结果不确定度的重要来源,需要评定。 Hydraulic universal testing machine commonly used in concrete block compressive strength test, is currently in accordance with “Rally, pressure and universal testing machine test procedures” (JJG139-1999) for measurement verification, given its only indication of the error is not Determine the degree. For the highway engineering industry’s special requirements, this can not be satisfied. Hydraulic universal testing machine, the pressure level between the lower component of the uncertainty introduced as a concrete block compressive strength of the test results of uncertainty, an important source of assessment needs to be assessed.