Plaster - filling block

Beijing National Yun aerated block special aerated concrete plastering mortar plastering mortar for water volume aerated concrete, deformation and other characteristics of plastering material specially developed for a variety of aerated concrete blocks, strips internal and external plastering and roof panels. It is prepared from high-quality cement, selected fine aggregate and polymer formed. It has good workability, easy to wipe a uniform formation of a thin layer to facilitate construction. It has a high bond strength, the mortar layer bonded firmly with the bottom surface. Mortar and good water retention properties, no cracks after hardening and durability. ? When using a substrate without any brushing interface agent, without hanging nets enhancement. And has a good workability, high bond strength, water resistance, freeze-thaw, plaster layer is not hollowing, cracking and other characteristics. ??? A, product standards: JC890-2001; Second, the performance indicators "autoclaved aerated concrete masonry mortar and plastering mortar?":?? Dry density (kg / m) ≤1500, stratified degree (mm ) ≤2, setting time (h) 4h20min, water retention (%) ≥88, compressive strength (Mpa) ≥8.3, bond strength (Mpa) ≥0.68, frost resistance (25 times), mass loss ≤5% strength loss ≤20%, shrinkage (%) ≤0.1,5 usable time (h) 4-6; Third, the construction process :: 1, primary treatment:?? wall surfaces should be clean, without hollowing, no? oil, no mold release agents and other stains. ? 2, mortar should be used with mechanical stirring, mixing time should not be less than 3min. Mortar mix should vary with use, mix well. In addition to water while stirring, not be added to other materials (add water to 4.25kg water / 25kg / bag). ? 3, good mixing mortar should generally be used within 3h-4h is completed; when the maximum temperature during construction 超过 30 ℃, should be used up within 2h after Ban Cheng; construction temperature should not fall below 5 ℃. ? 4, the plaster should be completed in masonry after 7 days and should be only after the masonry construction project quality inspection. ? 5, plastering mortar thickness per pass is generally not more than 15mm, the construction should be stratified than 15mm, the second layer should be a layer of construction before and after condensation were plastering should be layered compaction, no delamination, hollowing . ? 6, plastering mortar shall be applied in the lime mortar layer. ? 7, the plaster layer with the grass roots must be firmly bonded, smooth concrete walls should be treated as the interface. ? 8, after plastering mortar construction is completed, should prevent exposure and rain, after condensation should be conservation, conservation of not less than three days. ?? Fourth, the reference amount:? 16-18kg / m2 (thickness 10mm gauge) Packaging and storage: 50kg / bag, the product should be stored in dry and ventilated environment, the protection of nature 6 months. ? V. Notes: 1, add water and stir the slurry should be used within 4-6 hours. 2, the hardened mortar can not add water use. 3, construction tools should be cleaned before and after you are finished. 4, the operating ambient temperature above 5 ℃. ? ◆ Scope:?? Aerated concrete block special plaster. ? ◆ Specifications: Specifications consistency (mm) hierarchical degrees (mm) 28 days; compressive strength (MPa):? P5≤100≤20≥5, P10≤100≤20≥10, P15≤100≤20≥ 15, P20≤100≤20≥20 ?? ◆ use ◆ Packing:??? bag 25kg / bag ◆ Storage:?? Please keep in a cool dry place. ? ◆ Expiry date: three months. ? Said ???? This product is dried, sieved treated Featured graded fine aggregate and inorganic binder, mineral admixtures and chemical additives with a certain percentage of the dry mix mortar and mortar traditional correspondence?: ? dry mix mortar:? Plaster DP5.0, DPl0, DPl5 ,? traditional mortar:?? 1: l: 6 mortar mix, 1:? l: 4 mixing mortar ?? 1: 3 cement mortar Three main? technical performance ?????? intensity level DP20? DPl5? DPl0? DP7.5? DP5.0? Consistency (mm)? ≤110? water retention rate (%) ≥92? 28d? compressive strength (MPa) ≥20 .0? ≥15.0? ≥10.0? ≥7.5? ≥5.0? When condensation strength (Mpa) ≤10? bonding time (h) ≥0.3? 28d shrinkage (%) ≤0.5? impermeability? meet the design requirements