scholarly journals "Construction Regulations and Organizational Management" - A Case Study of a New Course Introduction to the Civil Engineering Curriculum

2016 ◽  
Author(s):  
Hossein Ataei ◽  
Ossama Salem
Keyword(s):  
Civil Engineering ◽  
Organizational Management ◽  
Engineering Curriculum

scholarly journals Influence of Hydrogeochemistry on Tunnel Drainage in Evaporitic Formations: El Regajal Tunnel Case Study (Aranjuez, Spain)

2021 ◽  
Vol 13 (3) ◽  
pp. 1505
Author(s):  
Ignacio Menéndez Pidal ◽  
Jose Antonio Mancebo Piqueras ◽  
Eugenio Sanz Pérez ◽  
Clemente Sáenz Sanz
Keyword(s):  
High Speed ◽  
Civil Engineering ◽  
Saturation Index ◽  
The Subject ◽  
Under Construction ◽  
Underground Flow ◽  
Very High ◽  
Over Time

Many of the large number of underground works constructed or under construction in recent years are in unfavorable terrains facing unusual situations and construction conditions. This is the case of the subject under study in this paper: a tunnel excavated in evaporitic rocks that experienced significant karstification problems very quickly over time. As a result of this situation, the causes that may underlie this rapid karstification are investigated and a novel methodology is presented in civil engineering where the use of saturation indices for the different mineral specimens present has been crucial. The drainage of the rock massif of El Regajal (Madrid-Toledo, Spain, in the Madrid-Valencia high-speed train line) was studied and permitted the in-situ study of the hydrogeochemical evolution of water flow in the Miocene evaporitic materials of the Tajo Basin as a full-scale testing laboratory, that are conforms as a whole, a single aquifer. The work provides a novel methodology based on the calculation of activities through the hydrogeochemical study of water samples in different piezometers, estimating the saturation index of different saline materials and the dissolution capacity of the brine, which is surprisingly very high despite the high electrical conductivity. The circulating brine appears unsaturated with respect to thenardite, mirabilite, epsomite, glauberite, and halite. The alteration of the underground flow and the consequent renewal of the water of the aquifer by the infiltration water of rain and irrigation is the cause of the hydrogeochemical imbalance and the modification of the characteristics of the massif. These modifications include very important loss of material by dissolution, altering the resistance of the terrain and the increase of the porosity. Simultaneously, different expansive and recrystallization processes that decrease the porosity of the massif were identified in the present work. The hydrogeochemical study allows the evolution of these phenomena to be followed over time, and this, in turn, may facilitate the implementation of preventive works in civil engineering.

Incorporating Sustainability and Green Engineering into a Constrained Civil Engineering Curriculum

2015 ◽  
Vol 141 (2) ◽  
Author(s):  
John A. Christ ◽  
Jeffrey L. Heiderscheidt ◽  
Monica Y. Pickenpaugh ◽  
Thomas J. Phelan ◽  
James B. Pocock ◽  
...  
Keyword(s):  
Civil Engineering ◽  
Engineering Curriculum ◽  
Green Engineering

New Applications of a Supervised Computational Intelligence (CI) Approach: Case Study in Civil Engineering

2019 ◽  
pp. 145-182
Author(s):  
Ameer A. Jebur ◽  
Dhiya Al-Jumeily ◽  
Khalid R. Aljanabi ◽  
Rafid M. Al Khaddar ◽  
William Atherton ◽  
...  
Keyword(s):  
Computational Intelligence ◽  
Civil Engineering ◽  
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