Study on Quality Control of Concrete in Construction Works of Structures for Irrigation, Drainage and Reclamation

排灌建筑物施工混凝土质量控制研究

• 批准号: 61560258
• 负责人: SHIRATAKI Yamaji
• 金额: $ 1.28万
• 依托单位: Tokyo University of Agriculture and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-61560258/
• 关键词: Concrete; Quality Control; 養生

It is important to conduct an effective quality control of concrete for completing concrete structures with required good quality.In this study, researches were made to investigate the quality control of concrete in the construction works of structures for irrigation, drainage and reclamation, and experiments on curing of concrete were carried out to clarlify the effects of curing condition on the quality of concrete.In the experiments, concrete test pieces were cured under five kinds of curing conditions, such as in water of standard temperature, in water out of doors, covered with wet sand, appling membrane and leaving in the open air. From the results of the experiments, it became obvious that effects of curing condition change according to the season when the test pieces are made. The results showed that concrete exposed to the open air without protect had cosiderablly low strength compared with other conditions.Data of quality control in a costruction work was analyzed to examine the actual condition of quality control in the site. Although there was somewhat large variation of the test data in the biginning of the construction work, as a whole, the variation of concrete quality was smaller than expected previously.

对灌排复垦工程中混凝土的质量控制进行了研究，并进行了混凝土养护试验，以了解养护条件对混凝土质量的影响。试验中，混凝土试件分别在标准温度水中、室外水中、湿砂覆盖、涂膜和露天等5种养护条件下养护。从试验结果可以看出，养护条件的影响随着试件制作季节的不同而变化。结果表明，暴露在露天环境中的混凝土与其他条件相比强度明显偏低，并对某工程施工质量控制数据进行了分析，以检验现场质量控制的实际情况。虽然施工过程中试验数据有较大差异，但总体上混凝土质量的变化小于预期。