混凝土透水模板布的工藝原理有哪些?

混凝土透水模板布的工藝原理有哪些?

　　混凝土透水模板布特別設計了滲水、透氣通道，可以確保水分、氣泡透出而大部分水泥水化顆粒膠凝物被截留在CPFL內側的混凝土表面，由此結構體表面形成一層富含水化硅酸鈣的致密硬化層，可以有效減少混凝土表面的蜂窩、麻面等缺陷，使混凝土表層致密、堅實，提高了混凝土的強度和耐久性，同時CPFL具有保水性，可以優化混凝土的初期養護條件。Formwork cloth specially designed for water seepage, the air passage, can ensure that the water, bubbles with most of the hydration of cement particle gel entrapped in the concrete surface CPFL on the side of the body surface to form a dense structure of hardened layer rich in calcium silicate hydrate, can effectively reduce the honeycomb, pitted the surface of the concrete defects the concrete surface, compact and solid, improves the strength and durability of concrete, while CPFL is the water, initial curing conditions can be optimized concrete.

　　1使用CPFL可降低混凝土表面氣泡缺陷率1 using CPFL can reduce the rate of bubble defect on concrete surfaceCPFL能夠明顯降低表面混凝土的氣泡缺陷率，幾乎可以徹底消除mm級以上氣泡。例如對于下部結構采用防腐涂裝的青島海灣大橋而言，使用CPFL不僅改善了混凝土結構的表觀質量，更提高了涂層與混凝土的粘附性能。CPFL can obviously reduce the bubble defect rate of the surface concrete, and can almost eliminate the bubbles above the mm level. For example, for the substructure of Qingdao Bay Bridge with anticorrosive coating, the use of CPFL not only improves the apparent quality of the concrete structure, but also improves the adhesion performance of the coating to the concrete.

　　2使用CPFL可減緩混凝土碳化的速率2 the use of CPFL can slow down the rate of carbonization of concreteCPFL可以有效排出表層混凝土的多余拌和用水，降低表層混凝土的水膠比，提高混凝土的致密性，降低碳化速率。試驗結果表明，與普通鋼板相比，使用CPFL可以降低28d、90d齡期混凝土的碳化深度達到70%以上。CPFL can effectively discharge the superfluous mixing water of the surface concrete, reduce the water and glue ratio of the surface concrete, improve the compactness of concrete and reduce the carbonization rate. The test results show that CPFL can reduce the carbonization depth of 28d and 90d age concrete by more than 70% compared with ordinary steel.3使用CPFL可增加表層混凝土回彈硬度3 using CPFL can increase the springback hardness of surface concrete使用CPFL后，表層混凝土的回彈硬度得到明顯提高，7d、28d的回彈值分別提高30%和15%左右。After the use of CPFL, the springback hardness of the surface concrete is obviously improved, and the rebound values of 7D and 28d are increased by 30% and 15%, respectively.4使用CPFL可提高混凝土表層抗滲透性4 the anti permeability of concrete surface can be improved by using CPFLCPFL能否提高混凝土的抗氯離子滲透能力及其影響深度是專家最為關注的問題，測試結果表明，CPFL可以大幅度降低結構表層混凝土的抗氯離子滲透性，與普通鋼模板相比，CPFL可降低混凝土氯離子擴散系數80%左右。CPFL can improve the resistance of concrete to chloride ion penetration depth and its influence is the most concern for the experts, the test results show that the CPFL can greatly reduce the surface resistance of concrete to chloride ion permeability, compared with ordinary steel template, CPFL can decrease the chloride diffusion coefficient of concrete is about 80%.