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透水地坪施工步骤
搅拌:透水地坪拌合物中水泥浆的稠度较大,且数量较少,为了便水泥浆能保证均匀地包裹在骨科上,宜采用强制式搅拌机,搅拌时间为5分钟以上。
Mixing: The consistency of cement slurry in pervious floor mixtures is large and the quantity is small. In order to ensure that the cement slurry can be evenly wrapped in orthopaedics, the forced mixer should be used. The mixing time is more than 5 minutes.
浇筑:在浇筑之前,路基必须先用水湿润。否则透水地坪快速失水份会减弱骨料间的粘结强度。由于透水地坪拌合物比较干硬,将拌和好的透水地坪和好的透水地坪材料铺在路基上铺平即可。
Pouring: Before pouring, the roadbed must be wetted with water. Otherwise, rapid moisture loss of permeable floor will weaken the bond strength between aggregates. Because the mixtures of permeable floors are dry and hard, the mixtures of good permeable floors and good permeable floors can be paved on the roadbed.
振捣:在浇注过程中不宜强烈振捣或夯实。一般用平板振动器轻振铺平后的透水性混凝土混合料,但必须注意不能使用高频振捣器,否则他会使混凝土过于 密实面减少孔隙率,并影响透水效果。同时高频振捣器也会使水泥浆体从粗骨料表面离析出来,流入底部形成一个不透水层,使材料失去透水性。
Vibration: Vibration or compaction should not be strong during pouring. Generally, the permeable concrete mixture paved by plate vibrator is lightly vibrated, but it must be noted that the high frequency vibrator can not be used, otherwise it will reduce the porosity of the overly compact surface of concrete and affect the permeability effect. At the same time, the high-frequency vibrator will make the cement paste segregate from the surface of coarse aggregate and flow into the bottom to form an impervious layer, which will make the material lose its water permeability.
辊压:振捣以后,应进一步采用实心钢管或轻型压路机压实压平透水混凝土拌合料,考虑到拌合料的稠度和周围温度等条件,可能需要多次辊压,但应注意,在辊压前必须清理辊子,以防粘结骨料。
Roller Compression: After vibration, solid steel tube or light roller should be used to compact the permeable concrete mixture. Considering the consistency and surrounding temperature of the mixture, it may be necessary to roll several times, but it should be noted that the rollers must be cleaned before rolling to prevent bonding aggregate.
养护:透水地坪由于存在大量的孔洞,易失水,干燥很快,所以养护非常重要.尤其是早期养护,要注意避免地坪中水分大量蒸发。通常透水混凝土拆模时间 比普通混凝土短,如此其侧面和边缘就会暴露于空气中,应用塑料薄膜或彩条布及时覆盖路面和侧面,以保证湿度和水泥充分水化。透水地坪应在浇注后1天开始洒 水养护,淋水时不宜用压力水柱直冲混凝土表面,这样会带走一些水泥浆,造成一些较薄弱的部位,但可在常态的情况下直接从上往下浇水。透水地坪的浇水养护时 间应不少于7天。
Maintenance: Pervious floor is very important because of its large number of holes, water loss and quick drying. Especially in early maintenance, we should pay attention to avoid evaporation of water in the floor. Usually, the time of removing the form of pervious concrete is shorter than that of ordinary coshusongdaid.07858.net shusongdaie.07858.net shusongdaig.07858.netshiyanjii.07858.net juanlianji.07858.net falan.71ix.comncrete, so the side and edge of pervious concrete will be exposed to the air, and the pavement and side will be covered by plastic film or color strip cloth in time to ensure the moisture and cement hydration. Permeable floor should be sprinkled one day after pouring. When sprinkling, it is not appropriate to use pressure water column to directly punch concrete surface. This will take away some cement slurry and cause some weak parts, but can directly water from top to bottom under normal conditions. The watering and maintenance time of the permeable floor should be no less than 7 days.

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