论文部分内容阅读
一、蒸养在标准情况下,各种混凝土管在第一天或第一夜都要进行一次养护,许多管子在一次养护后还要进行二次养护,以保证管子具有足够的强度。随着能源成本的提高,许多制管厂开始认真研究降低养护成本的方法。管子一次养护和二次养护的最高蒸汽温度为65℃左右。最初,很多制管厂把最高蒸汽温度降到43～54℃。现在有些管厂已降到32～49℃。有的管厂也开始研究最佳养护周期。在制订最佳养护周期时,他们企图充分利用预养期、温升期和恒温期。例如,通过测定混
First, steaming in the standard case, a variety of concrete pipes on the first day or the first night should be a conservation, many tubes in the maintenance of a second maintenance but also to ensure that the pipe has sufficient strength. With the increase in energy costs, many pipe manufacturers have begun to seriously study ways to reduce maintenance costs. The maximum steam temperature for the primary and secondary curing of the pipe is around 65°C. Initially, many pipe makers lowered the maximum steam temperature to 43-54°C. Some pipe factories have now dropped to 32-49°C. Some pipe manufacturers have also begun to study the best maintenance cycle. In the development of the best maintenance cycle, they attempt to make full use of pre-retention period, temperature rise period and constant temperature period. For example, by measuring