环氧地坪施工第一步之基面處理

地面情況與环氧地坪工程質量有很大關系，基面處理是环氧地坪工程重要一环。對施工基面進行詳細的檢查與分折，對確定施工基面的處理方法極為重要，它關系到塗裝層能否牢固附著於地面、塗裝層是否平整光亮的問題；為保證塗層和施工基面之間的粘接是持久的，要求基面幹燥、結實並且幹凈，沒有殘留物和其它污染物。环氧地坪表面狀況不同，环氧砂漿與地面粘結強度就會存在很大差別。
The ground condition is closely related to the quality of the floor project. The base surface treatment is an important part of the epoxy floor project. Detailed inspection and folding of construction base surface is very important to determine the treatment method of construction base surface, which relates to whether the coating layer can firmly adhere to the ground and whether the coating layer is smooth and bright. In order to ensure that the bonding between the coating and construction base surface is durable, it requires that the base surface be dry, firm and clean, without any. Residues and other pollutants. The bonding strength of the epoxy mortar and the ground will vary greatly depending on the surface condition of the floor.
這些差別主要表現在以下幾個方面：表面粗糙化處理可顯著提高粘結強度；同時，混凝土含水率越高粘結強度越低。為瞭做好基面處理，首先要測量抗壓強度。工業地坪的抗壓強度不應低於25N/mm2（3500psi），為滿足某些承重要求還可能需要更高的強度，可使用反彈儀做多個點的測量，或者最好取芯塊樣品對其抗壓強度進行實測，確定粘接強度。
These differences are mainly manifested in the following aspects: surface roughening treatment can significantly improve the bond strength; at the same time, the higher the moisture content of concrete, the lower the bond strength. In order to do well the base surface treatment, the compressive strength must be measured first. The compressive strength of industrial floors should not be less than 25N/mm2 (3500psi). In order to meet some important requirements, higher strength may be needed. The rebound meter can be used to measure the compressive strength of industrial floors at multiple points, or it is better to take core samples to measure the compressive strength and determine the b环氧地坪onding strength.
混凝土基面在其表面幾個毫米厚度內，通常是水泥漿形成的低強度層，溫度的改變或者反復承重而產生應力，會導致粘接強度降低，因此粘接強度最低不應小於1.5N/mm2（210psi）。
The concrete base is usually a low strength layer formed by cement slurry within several millimeter thickness of its surface. The change of temperature or repeated load-bearing will lead to the decrease of bond strength. Therefore, the minimum bond strength should not be less than 1.5N/mm2 (210psi).
基面潮濕度的測定也不能忽視，因為水泥基面隻有在其潮濕度不大於6％的程度時才能施工。
The determination of base moisture can not be neglected, because cement base can only be constructed when its humidity is not more than 6%.
在測量潮濕度時，可采用“橡皮墊實驗”，將至少1m×1m的聚乙烯薄膜用膠帶粘在混凝土面上，24小時後拿開，這樣就確定瞭冷凝水的數量。氣侯环境同樣十分重要，忽略氣侯因素可導致地板的嚴重缺陷，例如粘接強度不夠、水印、空洞、不規則表面、硬化不充分。因此以下數據在施工中每天必須測量數次：环境溫度（氣溫）、施工基面的溫度、露點。最後進行準備與清理，由油脂、機油或有機/無機酸/或水泥表層所引起的污染，如果不完全除去，將影響完成後地板的粘結性能。因此須用機械方法清理表面，直到結實的裡層，並通過測定粘接強度進行檢查。
透水地坪When measuring humidity, "rubber pad experiment" can be used to glue at least 1m *1m polyethylene film onto concrete surface with tape and remove it 24 hours later, so as to determine the amount of condensate. Climate environment is also very important, ignoring climate factors can lead to serious defects of the floor, such as insufficient bonding strength, watermarking, voids, irregular surfaces, inadequate hardening. Therefore, the following data must be measured several times a day in construction: ambient temperature (temperature), temperature of construction base, dew point. Finally, preparation and cleaning will affect the bonding performance of the finished floor if the pollution caused by grease, oil or organic/inorganic acid/cement surface is not completely removed. Therefore, the surface must be mechanically cleaned up to a solid inner layer and checked by measuring the bonding strength.