//www.tianyujian.com/介紹由于技術方面的原因，施工過程中砂漿或混凝土的拌和水量總是超過水泥水化所需要的水量，這部分多余的水分在砂漿或混凝土硬化過程中逐漸蒸發，這樣便在硬化后的砂漿或混凝土中留下孔隙和毛細管道；另一方面砂漿和混凝土在硬化過程中， 常會因收縮應力而使屋面出現一些收縮裂縫。
Jinan waterproofing company introduced due to technical reasons, the amount of water mixing mortar or concrete construction process is always more than the amount of water needed for cement hydration, this part of the gradual
evaporation of excess water in the mortar or concrete hardening process, thus after hardening mortar or concrete pores and capillary channels left; on the other hand mortar and concrete in the hardening process, often leaving the roof
due to shrinkage stress some shrinkage cracks.
濟南防水公司談到砂漿或混凝土防水層在屋面上的面積較大，在受到晝夜溫差的影響時，熱脹冷縮現象會導致剛性防水層出現一些無規則的開裂，這些裂縫同樣也是造成屋面滲漏的原因。
Jinan waterproofing company comes to a larger area of mortar or concrete waterproofing layer on the roof, when affected by DIF, the expansion and contraction phenomenon will lead to some rigid waterproof layer cracking without rules,these cracks is also caused by infiltration of roof leakage causes.
//www.tianyujian.com/分析在屋面防水層施工時，如果施工方法不當，出現如振搗不均勻、混凝土養護不到位等施工質量方面的問題，同樣會影響到屋面的防水性能而出現滲漏。
Jinan waterproofing company analysis at the roof waterproof layer construction, if improper construction methods, such as vibrators appear uneven, the problem of construction aspects of quality of concrete curing is not in place, it will also affect the waterproofing and roof leakage.