Assessment of the Operational Safety of Roads and Transport Structures with Use of the Fracture Mechanics Methods
详细信息 查看全文
- 作者：Tatiana Petrova ksmt@pgups.edu ; Eduard Chistyakov ; eduard_chistiakov@mail.ru ; Yulia Sorvacheva ksmit_pgups@mail.ru
- 关键词：road surface fracture ; transport structures ; slag alkaline (cement-free) binder ; fracture mechanics methods ; crack resistance ; concrete deformability
- 刊名：Transportation Research Procedia
- 出版年：2017
- 出版时间：2017
- 年：2017
- 卷：20
- 期：Complete
- 页码：505-510
- 全文大小：159 K
- 卷排序：20
文摘
The study is aimed at revealing the correlation between the critical coefficient of stress intensity and slag alkaline cement-free concrete structure and strength. Based on the fracture mechanics methods, the comparative assessment of crack formation in concrete of transport structures based on traditional and cement-free slag alkaline binder is performed. The comparison of criteria of crack resistance of high strength slag alkaline concrete and portland-cement concrete has shown that the first one has the stress intensity coefficient 1.5 times higher, fracture energy value 2.4 times higher, a bigger crack size at the same level of loading. Thus, it is concluded that slag alkaline concrete is a perspective and durable material for road and transport structures.