Compared with masonry mortar, plastering mortar has the following characteristics:

①抹面层不承受荷载；

① The plastering layer does not bear loads;

②抹面层与基底层要有足够的粘结强度，使其在施工中或长期自重和环境作用下不脱落、不开裂；

② The plastering layer and the base layer should have sufficient bonding strength to ensure that they do not fall off or crack during construction or under long-term self weight and environmental effects;

③抹面层多为薄层，并分层涂抹，面层要求平整、光洁、细致、美观；

③ The plastering layer is mostly a thin layer and applied in layers. The surface layer should be flat, smooth, meticulous, and aesthetically pleasing;

④多用于干燥环境，大面积暴露在空气中。

④ Mostly used in dry environments, exposed to large areas of air.

凡涂抹在建筑物和构件表面以及基底材料的表面，兼有保护基层和满足使用要求作用的砂浆，可统称为抹面砂浆（也称抹灰砂浆）。与砌筑砂浆相比，抹面砂浆具有以下特点：

Mortar that is applied to the surfaces of buildings and components, as well as the surface of base materials, and has the function of protecting the base layer and meeting the usage requirements, can be collectively referred to as plastering mortar (also known as plastering mortar). Compared with masonry mortar, plastering mortar has the following characteristics:

①抹面层不承受荷载；

① The plastering layer does not bear loads;

②抹面层与基底层要有足够的粘结强度，使其在施工中或长期自重和环境作用下不脱落、不开裂；

② The plastering layer and the base layer should have sufficient bonding strength to ensure that they do not fall off or crack during construction or under long-term self weight and environmental effects;

③抹面层多为薄层，并分层涂抹，面层要求平整、光洁、细致、美观；④多用于干燥环境，大面积暴露在空气中。抗裂砂浆 （anti-crack mortar），以由聚合物乳液和外加剂制成的抗裂剂、水泥和砂按一定比例制成的能满足一定变形而保持不开裂的砂浆。抗裂砂浆进场的是成品料，直接加水搅 拌就可以使用了。成品抗裂砂浆材料也就是细沙料、水泥、和防裂剂。其中的防裂剂主料就是一种叫硅灰的，它能够填充水泥颗粒间的孔隙，同时与水化产物生成凝 胶体，与碱性材料氧化镁反应生成凝胶体。

③ The surface layer is mostly a thin layer and applied in layers, with the surface layer required to be flat, smooth, meticulous, and aesthetically pleasing; ④ Mostly used in dry environments, exposed to large areas of air. Anti crack mortar is a mortar which is made of anti crack agent, cement and sand made of polymer lotion and admixture in a certain proportion and can meet certain deformation without cracking. The anti cracking mortar is delivered as finished material, which can be used by directly mixing with water. The finished anti crack mortar materials are fine sand, cement, and anti crack agents. The main material of anti crack agent is a kind of silica fume, which can fill the pores between cement particles, generate gel with hydration products, and generate gel with alkaline material magnesium oxide.