论文部分内容阅读
在预制混凝土低压输水管道接头的处理上,传统的接头方法是采用布兜法刚性接头。由于这种接头在施工中属于二期混凝土工程,因此施工质量难以保证,加之不均匀沉陷的影响,极易使接头处产生裂缝,通水试验表明,用此法处理的接头,有20～30%不同程度地存在漏水现象。为了确保接头强度和使其不漏水,我们进行了改刚性接头为柔性接头的试验研究,即用PT胶泥处理接头,并获得成功,于1987年8月通过了技术鉴定。PT胶泥是一种具有弹性强、耐热度高、低温柔
In the prefabricated low-pressure water pipe connector handling, the traditional connector method is to use cloth pocket method rigid connector. Because of this joint in the construction of the second phase of concrete works, construction quality is difficult to guarantee, coupled with the impact of uneven subsidence, easily lead to cracks joints, water tests show that this method of processing joints, 20 to 30 % Leakage to varying degrees. In order to ensure the joint strength and make it watertight, we conducted a flexible joint test to rigid joints, that is treated with PT mastic and success, in 1987 August passed the technical appraisal. PT clay is a kind of flexible, high heat resistance, low temperature soft