Plastering dry mixed mortar refers to the mortar applied to the surface of substrate, which has protective base course and aesthetic effect. Compared with masonry mortar, plastering dry mixed mortar has the following characteristics:

①抹面层不承受荷载；

① The plastering layer shall not bear the load;

②表面层和基层应具有适合的粘合强度，以便它们不会在施工或长期自重和环境下脱落，没有破碎；

② The surface course and base course shall have suitable bonding strength so that they will not fall off and break under construction or long-term self weight and environment;

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, which shall be applied in layers. The surface layer shall be flat, smooth, meticulous and beautiful;

④多用于干燥环境，大面积暴露在空气中。

④ It is mostly used in dry environment and exposed to air in a large area.

抹面干混砂浆的分类、性能及应用

Classification, performance and application of plastering dry mixed mortar

根据其功能不同，抹面干混砂浆一般可分为普通抹面砂浆和其他用途砂浆（具有防水、耐酸、绝热、吸声及装饰等用途的砂浆）。

According to its different functions, plastering dry mixed mortar can generally be divided into ordinary plastering mortar and mortar for other purposes (mortar with waterproof, acid resistant, heat insulation, sound absorption, decoration and other purposes).

常用的普通抹面砂浆有水泥砂浆、石灰砂浆、水泥石灰混合砂浆、麻刀石灰砂浆（简称麻刀灰）、纸筋石灰砂浆（纸筋灰）等。

Common plastering mortar includes cement mortar, lime mortar, cement lime mixed mortar, machete lime mortar (abbreviated as machete lime), paper reinforced lime mortar (paper reinforced lime), etc.

抹面干混砂浆的应用结实地粘合在基面上，因此要求抹面干混砂浆具有良好的可加工性和高粘合性。抹面干混砂浆通常分为两层或三层进行施工。底砂浆的作用是使砂浆和基层结实粘合，并应具有良好的保水性。中间层主要用于调平，有时可以省略。表面层主要用于获得光滑表面能力。

The application of plastering dry mixed mortar is firmly bonded to the base surface, so the plastering dry mixed mortar is required to have good processability and high adhesion. Plastering dry mixed mortar is usually divided into two or three layers for construction. The function of bottom mortar is to make the mortar firmly bonded with the base course, and shall have good water retention. The middle layer is mainly used for leveling and can be omitted sometimes. The surface layer is mainly used to obtain the ability of smooth surface.

每层表面的能力和要求是不同的，每层使用的砂浆是不同的。同时，基材和工程部件的特性不同，抹面干混砂浆的工艺要求也不同，这也是选择砂浆类型的主要依据。

The capacity and requirements of each layer of surface are different, and the mortar used in each layer is different. At the same time, due to the different characteristics of base materials and engineering components, the process requirements of plastering dry mixed mortar are also different, which is also the main basis for selecting mortar type.

抹面干混砂浆宜用于潮湿或强度要求较高的部位；混合砂浆多用于室内底层或中层或面层抹灰；石灰砂浆、麻刀灰、纸筋灰多用于室内中层或面层抹灰。对混凝土基面多用水泥石灰混合砂浆。对于木板条基底及面层，多用纤维材料增加其抗拉强度。

Plastering dry mixed mortar should be used for wet or high strength parts; Mixed mortar is mostly used for plastering of indoor bottom layer or middle layer or surface layer; Lime mortar, hemp knife ash and paper reinforcement ash are mostly used for indoor middle or surface plastering. Cement lime mixed mortar shall be used for concrete base surface. For the base and surface of the wooden strip, fiber materials are used to increase its tensile strength.

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