(1) Standard consistency of material

干拌砂浆按具体的设计标准用水量加水混合后，按规定方法搅拌均匀。以此判断材料的性能，是否达到设计要求。方法原理是抹灰砂浆的湿砂浆对标准试杆(或试锥)的沉入具有一定阻力，通过试验湿砂浆的沉入度，确定砂浆的基本性能是否符合出厂要求。

The dry mixed mortar shall be mixed with water according to the specific design standard water consumption, and then mixed evenly according to the specified method. So as to judge whether the performance of the material meets the design requirements. The method principle is that the wet mortar of plastering mortar has a certain resistance to the sinking of standard test rod (or test cone). By testing the sinking degree of wet mortar, determine whether the basic performance of mortar meets the factory requirements.

(2)砂浆保水性

(2) Water retention of mortar

砂浆混合物能够保持水分的能力称为保水性。保水性也指砂浆中各项组成材料不易分离的性质。

The ability of mortar mixture to retain water is called water retention. Water retention also refers to the property that the constituent materials in the mortar are not easy to separate.

(3)分层度

(3) Stratification degree

砂浆的保水性是用分层度表示的。搅拌均匀的砂浆静置30min后，上下层砂浆沉入量的差值，称为分层度。

The water retention of mortar is expressed by layering degree. The difference between the upper and lower mortar settlement after the evenly mixed mortar is left standing for 30min is called delamination.

(4)砂浆的流动性

(4) Fluidity of mortar

砂浆的流动性也叫稠度，是指在自重或外力作用下 流动的性能。施工时，砂浆铺设在粗糙不平的砖石表面上，要能很好地铺成均匀密实的砂浆层，抹面砂浆要能很好地抹成均匀薄层，采用喷涂施工需要泵送砂浆，都要求砂浆具有一定的流动性。砂浆的流动性和许多因素有关，胶凝材料的用量、用水量、砂粒粗细、形状、级配，以及砂浆搅拌时间都会影响砂浆的流动性。干拌砂浆湿砂浆的流动性可在实验室中，用砂浆稠度仪测定其稠度值(即沉入量)来表示砂浆的流动性。

The fluidity of mortar, also known as consistency, refers to the fluidity under the action of self weight or external force. During construction, the mortar shall be laid on the rough masonry surface, which shall be well paved into a uniform and dense mortar layer, and the plastering mortar shall be well plastered into a uniform thin layer. The spraying construction requires pumping mortar, which requires that the mortar has a certain fluidity. The fluidity of mortar is related to many factors. The amount of cementitious material, water consumption, sand particle size, shape, gradation and mortar mixing time will affect the fluidity of mortar. The fluidity of dry mixed mortar and wet mortar can be expressed by measuring its consistency value (i.e. settlement) with mortar consistency meter in the laboratory.

传统砂浆流动性的选择与砌体材料及施工天气情况有关。对于多孔吸水的砌体材料和干热的天气，则要求砂浆的流动性要大些。相反对于密实不吸水的材料和湿冷的天气，可要求流动性小些。而拥有良好保水性能的干拌砂浆的流动性可基本稳定在一个相对标准的稠度范围。

The choice of traditional mortar fluidity is related to masonry materials and construction weather. For porous and absorbent masonry materials and dry and hot weather, the fluidity of mortar is required to be greater. On the contrary, for dense non absorbent materials and wet and cold weather, less fluidity can be required. The fluidity of dry mixed mortar with good water retention performance can be basically stable in a relatively standard consistency range.