Degree of restraint concept in analysis of early-age stresses in concrete walls

2015 ◽  
Vol 102 ◽  
pp. 369-386 ◽  
Author(s):  
Agnieszka Knoppik-Wróbel ◽  
Barbara Klemczak
Keyword(s):  
Early Age ◽  
Concrete Walls ◽  
Degree Of Restraint

Field measurements for early-age strains in concrete walls

1990 ◽  
Vol 42 (153) ◽  
pp. 203-212 ◽  
Author(s):  
M. Anson ◽  
P. M. Rowilson
Keyword(s):  
Field Measurements ◽  
Early Age ◽  
Concrete Walls

Reduction of Early-Age Crack Risks in Concrete Walls by Using a New Casting Technique

2016 ◽  
Vol 26 (3) ◽  
pp. 216-224
Author(s):  
Majid Al-Gburi ◽  
Jan-Erik Jonasson ◽  
Martin Nilsson
Keyword(s):  
Early Age ◽  
Concrete Walls ◽  
Casting Technique

Impact of Super Absorbent Polymers on Early Age Behavior of High Performance Concrete Walls

2021 ◽  
pp. 49-58
Author(s):  
J. Kheir ◽  
L. De Meyst ◽  
J. R. Tenòrio Filho ◽  
T. A. Hammer ◽  
A. Klausen ◽  
...  
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Early Age ◽  
Concrete Walls

Evaluation of methods for analyzing early-age cracking risk in concrete walls of tunnel structures

2020 ◽  
Vol 71 (7) ◽  
pp. 746-759
Author(s):  
Do Tu Anh ◽  
Ha Luan Minh ◽  
Nguyen Quang Thac ◽  
Tran Tam Duc ◽  
Tham Thang Quoc
Keyword(s):  
Reinforced Concrete ◽  
Early Age ◽  
Current Standard ◽  
Tunnel Wall ◽  
Concrete Walls ◽  
Reinforced Concrete Walls ◽  
Modern Methods ◽  
Cracking Risk ◽  
Crack Widths ◽  
Evaluation Of Methods

This paper is concentrated on investigating the modern methods to evaluate the probability of cracking in urban tunnel structures during construction. The study considers the current standard methods for assessing reinforced concrete walls of an urban tunnel, which experienced early-age cracking. The results obtained using guidelines were compared with actual observations of crack widths in the urban tunnel wall. Examples of using specifications in wall design were also described. The proper method is highlighted with suggestions for a possible path for considering early-age thermal and shrinkage effects in urban reinforced concrete tunnel walls

scholarly journals Thick Reinforced Concrete Walls Subjected To Non-Uniform Restrained Shrinkage

2021 ◽  
Author(s):  
Ali Jourabloo
Keyword(s):  
Reinforced Concrete ◽  
Reinforcement Ratio ◽  
Restrained Shrinkage ◽  
Concrete Walls ◽  
Cracking Behavior ◽  
Tensile Stresses ◽  
Minimum Reinforcement ◽  
Reinforced Concrete Walls ◽  
Codes Of Practice ◽  
Degree Of Restraint

Several researchers have studied the behavior of reinforced concrete walls under restraint shrinkage, which demonstrate the variation of the degree of restraint with different Length/Height ratios. In general, concrete standards and codes of practice recommend a minimum amount of reinforcement for shrinkage effects. This research investigates the response of thick reinforced concrete walls subjected to restraint shrinkage. The parameters studied are the thickness of reinforced concrete walls, and non-uniform distribution of shrinkage along the Length\Height and through the thickness of the wall. This study uses the non-linear finite element method to simulate the cracking behavior of the concrete and to predict tensile stresses in the reinforcement in the vicinity of Cracks. Moreover, this study investigates the influence of reinforcement ratio and compares the results with well-known concrete standards and codes of practice. It is concluded that the non-uniform shrinkage through the thickness of the wall may have significant impact on the cracking behavior of thick concrete walls. In addition, as expected, higher reinforcement ratio results in lower tensile stresses in the reinforcement. The thesis also provides guidelines for minimum reinforcement ratio.

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