The numerical method and random analysis of cement concrete expansion are given. A mathematical procedure is presented which includes the nonlinear characteristics of the concrete. An expression is presented to predict the linear restrained expansion of expansive concrete bar restrained by a steel rod. The results indicate a rapid change in strains and stresses within initial days, after which the change gradually decreases. A reliable and accurate method of predicting the behavior of the concrete bulkheads in drifts is presented here. Extensive sensitivity and parametric studies have been performed. The random density distributions of expansive concrete are given based on the restricted or unrestricted condition. These studies show that the bulkhead stress fields are largely influenced by the early modulus of the concrete and the randomness of the ultimate unrestrained expansion of the concrete.
参考文献
| [1] | Bertero V V .Curing Effects on Expansion and Mechanical Behavior of Expansive Concrete[J].American Concrete Institute Journal·Proceeding,1967,64(02):84-96. |
| [2] | Gutmann P W .Expansive Cements in the United States A Three Year Review[J].Civil Engineering American Society of Civil Engineers,1967,37(11):42-45. |
| [3] | Moore G B.Tidal Exposure Effects on Concrete Made with Shrinkage-Compensating Cement[A].SP- 64 7,Deroit,1980:115-122. |
| [4] | Gaskill C A;Jacobs R.Utilization of Shrinkage- Compensating Concrete-A Cold Storage Warehouse Application[A].American Concrete Institute,SP-64-3,Detroit,1980:13-32. |
| [5] | Nagataki S;Yoneyama K.Studies on Continuously Reinforced Concrete and Pre-stressed Concrete Pavements Made with Expansive Cement Concrete[A].SP- 38-＆,Detroit,1973:131-163. |
| [6] | Russell H G.Design of Shrinkage-Compensating Concrete Slabs[A].SP - 64 - 6,Detroit,1980:81-114. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%