Testing on Elastic Modulus of Plastic Concrete
详细信息
- 责任者：Wang Siwei (North China Institute of Water Conservancy and Hydroelectric Power ; Zhengzhou 450045 ; China) ; Yu Huaichang
- 刊名：Hydrogeology and Engineering Geology
- 出版年：2011
- 卷期：38(3)
- 关键词：混凝土 ; concrete ; 土工试验 ; soil tests
- 页码：p.73-76
- 图表：1 illus., 2 tables, 13 refs.
- 分类号：1702
- issnNo：ISSN1000-3665
- isbnNo：CN11-2202/P
摘要
Elastic modulus of plastic concrete is studied by testing with 4 standard distance of 300mm, 200 mm, 150 mm and 100 mm. The result shows that the method which is measured by computer is best, and the elastic modulus is most steady, and it is much less than that by manual record. The stress-train curve by computer record has beginning compressive bend period and longer descending period, but that by manual record has no beginning compressive bend period and has longer ascending linear period. It is presented that elastic modulus of plastic concrete can be calculated using with the two points of 0.3 and 0.7 of the maximum uniaxial compressive strength, and prepressing is not necessary before testing.