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预应力屋面板比普通钢筋混凝土屋面板刚度大、抗裂性好、用钢量少,因此最近一年多来预应力屋面板的生产量与日俱增。目前,我们生产的预应力屋面板,质量普遍提高,角部裂缝的问题已经解决,同时生产周期从过去的三天缩短到一天。我们主要是生产1.5×6米和3×6米先张法粗细钢筋预应力屋面板,最近又试制1.5×7.5米预应力
Compared with ordinary reinforced concrete roof panels, prestressed roof panels are more rigid, have better crack resistance, and use less steel. As a result, the production of prestressed roof panels has increased over the past year or more. At present, the quality of the prestressed roof panels we produce is generally improved, and the problem of corner cracks has been solved, and the production cycle has been shortened from the past three days to one day. We mainly produce prefabricated steel panels of 1.5×6m and 3×6m pretensioned steel bars, and recently trial-produced 1.5×7.5m prestressed roofing panels.