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为了推动自密实混凝土的工程应用,发展自密实混凝土工作性的标准化测试方法非常必要。开发了一种自密实混凝土工作性的测试仪,并由此发展了相应的测试方法,该测试方法通过测试混凝土的流出时间、动态扩展度以及动态离析率3个参数来反映自密实混凝土的工作性。试验结果验证了这种新的方法能够有效地评价和反映自密实混凝土的工作性。与已有的方法相比,该新方法具有简单易操作的特点,而且能够反映混凝土拌合物动态情况下的工作性。
In order to promote the engineering application of self-compacting concrete, it is necessary to develop standardized testing methods for self-compacting concrete workability. A self-compacting concrete tester has been developed and corresponding test methods have been developed. The test method reflects the work of self-compacting concrete by measuring the outflow time, dynamic expansion and dynamic separation ratio of concrete Sex. The test results verify that this new method can effectively evaluate and reflect the workability of self-compacting concrete. Compared with the existing methods, the new method is simple and easy to operate, and can reflect the workability of the concrete mixture under dynamic conditions.