System for verification and examination of construction placement related performance evaluation of fresh concrete using at construction site

为开发施工现场新拌混凝土性能评价的施工浇筑验证与检测实用系统，提出了施工浇筑验证与检测的两种试验方法。一是采用箱式容器对新拌混凝土动态通过障碍物的试验方法;二是采用坍落度试验仪进行坍落度试验，评价新拌混凝土流动性和粘聚力的试验方法。本课题组与日本6个研究室，采用6种相同水泥单位掺量的混凝土配合比进行了共同试验，以检验这些方法所查询的指标是否合适。认为两种试验方法均适用于新拌混凝土的验证试验，而采用粘聚力试验评价新拌混凝土流动性和粘聚力的试验方法适用于新拌混凝土施工浇筑相关性能评价的检验试验。

In order to develop the practical system for verification and examination of construction placement related performance evaluation of fresh concrete using at construction site, we proposed the two experimental methods for verification and examination of construction placement. One is the test method for dynamic pass-ability through obstacle for fresh concrete using box shaped container. The other is the test method for flow-ability and cohesion evaluation of fresh concrete by tamping test using apparatus of slump test. Our group and six research laboratories in Japan carried out the common experiment using the six mix proportions of concrete with same unit content of cement so as to inspect the propriety of the indexes inquired by these methods,. As a result, it is considered that the two test methods are proper for verification test and the test method for flowability and cohesion evaluation of fresh concrete by tamping test is proper for examination test of construction placement related performance evaluation of fresh concrete.