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ACI Student Chapter at Universidad del Norte

American Concrete Institute (ACI) Student Chapter at Universidad del Norte was approved on December 18, 2017. Congratulations for all our CE (Civil Engineering) undergraduate students!

http://www.concrete.org/

Research article: Evaluation of tangential and radial stresses on thick walled concrete cylinders under internal pressure

Research article: Evaluation of tangential and radial stresses on thick walled concrete cylinders under internal pressure:

http://rcientificas.uninorte.edu.co/index.php/ingenieria/article/view/9183/10938

Abstract:

This article evaluates the relationship between the radial stress and tangential stress when a hollow cylinder is subjected to an internal pressure (pi). In previous research, authors reported a new methodology to generate a tension strength test in hollow concrete cylinders. As a novel method, to understand the stress behaviour on the probe, it is important to establish relationships between these stresses and its correlations.

This article reflects how these stresses vary according to the different internal radius (ri) for hollow cylinders. As result of this evaluation, it was found that the value of tangential stress at any point is equal to the minimum tangential stress (it is present at the outer surface of the hollow cylinder) plus the value of the radial stress at the evaluation point. The maximum tensile stress always occurs at the internal surface of the cylinder and at a value for tangential stress higher than pi.

Keywords: Concrete, pressure, radial stress, tangential stress, tension. 

ASCE Student Chapter at Universidad del Norte

American Society of Civil Engineers (ASCE) Student Chapter at Universidad del Norte was approved on October 3, 2017. Congratulations for all our CE (Civil Engineering) undergraduate students!

http://www.asce.org/

Certificate

 

Muros delgados

El profesor Carlos Arteta, miembro del GIEG, estará realizando una presentación sobre muros delgados en el "International Workshop on Structural Concrete" (14 de octubre de 2017). Este Workshop se lleva a cabo dentro de la "ACI Fall Convention 2017" que se lleva a cabo en Anaheim, CA, USA. Se adjunta documentación que puede ser de su interés. 

Programación y expositores: https://www.concrete.org/Portals/0/Files/PDF/10th%20International%20Workshop.pdf

Active voice vs. passive voice

Active voice is an important matter when you are writing research articles. Here are few tips:
"...Active voice more closely resembles spoken language; hopefully ideal spoken language. When we speak, we generally use the active voice without thinking. Our writing should become that automatic.

You would never say:
Passive: My car (subject) was driven (action) to work by me. 
Or:
Passive: Breakfast (subject) was eaten (action) by me this morning.

Instead, you would say:

Active: I (subject) drove (action) my car (object) to work.
And:
Active: I (subject) ate (action) breakfast (object) this morning."


Source: Plain Language, http://www.plainlanguage.gov/howto/quickreference/dash/dashactive.cfm