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在北方寒冷地区的港湾工程混凝土施工中,使用加气剂以提高其耐久性已有20余年的历史,但作为评定加气剂品质的主要指标——泡沫度的鉴定方法,许多部门一直沿用人工手摇的方法,不但劳动强度大,且受各种人为因素的影响多,经对松脂皂溶液的测定结果表明,男同志(23人次)的相对误差为2.72%,女同志(11人次)的相对误差竞达5.26%之多,即使同一人操作,其相对误差也达2.57%。作为一个好的试验方法,我们认为应该具备较高的试验精度,一种材料的试验结果不应因人而异,因地而异,同时还应具备劳动强度低,设备简单和操作简便等特点。为了达到这些
In the northern frigid area of the harbor engineering concrete construction, the use of air-entraining agent to improve its durability has more than 20 years of history, but as the main indicators to assess the quality of air-entraining agent - foam degree identification method, many departments have been using artificial The manual method is not only labor-intensive, but also influenced by various human factors. The results of the determination of rosin soap solution showed that the relative error of gay men (23 persons) was 2.72%, and that of lesbians (11 persons) The relative error of 5.26% as many as competing, even if the same person operation, the relative error of up to 2.57%. As a good test method, we think that we should have a higher test accuracy, the test results of a material should not vary from person to person, vary from place to place, but also should have the characteristics of low labor intensity, simple equipment and easy operation . In order to achieve this