关于砂浆强度和砌体强度的几个问题

现场砂浆强度变异性与砂浆配料，砂浆试块有关，砌筑施工中各操作环节，如块材湿润程度，砂浆拌和使用时间，砌筑水平等，对砌体强度的影响不容忽视。因此，应提高施工水平，减小砂浆强度变异性，在抗震设防地区还应将抗剪强度作为重要指标。

SEVERAL PROBLEMS CONCERNING THE STRENGTH OF MORTAR AND MASONRY ENVELOPE

The strength variability of cast-in cement mortar has beenclosely affected by the following factors namely: 1, mixtures of mortar, 2, specimen features of mortar and 3, various procedures of masonry construction including humidity of masonry unit, working period of mortar and masonry unit,level of masonry construction etc. All of these factors should not be neglected. It is,therefore,that prometion of construction level and reduction of variablity of mortar strength should be strictly carried out.And finally in aseismatic region,the structure's aseismatic shearing strength of mortar should be well designed.