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SUMMARY:[DEADLINE] Κειμενο
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DTSTART:20200403T161500
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SUMMARY:[DEADLINE] Excavation-Foundation
DESCRIPTION:Book: Technical English for Civil Engineers, Surveyors and Architects, Pages: 79-80-81
Please read carefully the text and translate it!
After you have finished proceed to the following Comprehension Exercises: B.1.: 1-4  B.2: 1-8  B3 (the entire exercise)
(deadline: 2020-04-03 16:15:00)
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DTSTART:20200410T171000
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SUMMARY:[DEADLINE] Excavation-Foundation (2)
DESCRIPTION:Book: Technical English for engineers, page: 82 Please read the text Foundation Construction and translate it into Greek. After you have finished please send it to me.
page: 86,  B.5 Fill in the gaps (written)
pages: 90-91, exercises D.1, D.2, D.3, D.4 (written)
The Instructor
Dr Alexandros Papanis
(deadline: 2020-04-10 17:10:00)
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DTSTART:20200422T142500
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SUMMARY:[DEADLINE] Construction  Methods (I)
DESCRIPTION:Book: Technical English for Civil Engineers
pages: 97-98, Construction Methods (I): please read carefully the text and translate it into Greek
pages:99 (exercise: B.1), 101 (exercise B.3 + B.4).
Please send me the translated text and the exercises for assessment!
Note: Feel free to ask me any kind of questions or queries that might trouble you!
 
The Instructor
Dr Alexandros Papanis
(deadline: 2020-04-22 14:25:00)
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DTSTART:20200508T181500
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SUMMARY:[DEADLINE] Strength and Stability
DESCRIPTION:pages:135-139 => Read carefully the Text concerning the Dead, Live and Wind Loads and translate it into Greek (not the one concerning the Structural Organization).
page 139: exercise B.1 please answer the questions and send them to the instructor in a written form.
pages 140-141: exercises B.2 + B.3 (answer the questions and send them to the instructor in a writtten form)
 
(deadline: 2020-05-08 18:15:00)
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BEGIN:VEVENT
DTSTART:20210224T143000
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SUMMARY:[DEADLINE] Επί Πτυχίω - Αγγλική Τεχνική Ορολογία
DESCRIPTION:Παρακαλώ απαντήστε σε ΟΛΑ τα ερώτηματα!
Ο Διδάσκων
Δρ Αλέξανδρος Παπάνης
(deadline: 2021-02-24 14:30:00)
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BEGIN:VEVENT
DTSTART:20210425T235500
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SUMMARY:[DEADLINE] Translation
DESCRIPTION:1. Please study carefully the passage and render the translation into Greek (email: apapanis@eng.duth.gr).
2. Give a general Title to the entire text and 4 subtitles (one title for each paragraph separately).
3. Give a summary of the whole text in 10 lines only.
Deadline: Sunday, 25th April 2021. 23:55pm.
The Instructor
Dr Alexandros Papanis
 
The Text
Concrete has relatively high compressive strength, but significantly lower tensile strength. As a result, without compensating, concrete would almost always fail from tensile stresses – even when loaded in compression. The practical implication of this is that concrete elements subjected to tensile stresses must be reinforced with materials that are strong in tension (often steel). The elasticity of concrete is relatively constant at low stress levels but starts decreasing at higher stress levels as matrix cracking develops. Concrete has a very low coefficient of thermal expansion, and as it matures concrete shrinks. All concrete structures will crack to some extent, due to shrinkage and tension.
Reinforced concrete is the most common form of concrete. The reinforcement is often steel, rebar (mesh, spiral, bars and other forms). Structural fibers of various materials are available. Concrete can also be prestressed (reducing tensile stress) using internal steel cables (tendons), allowing for beams or slabs with a longer span than is practical with reinforced concrete alone. Inspection of existing concrete structures can be non-destructive if carried out with equipment such as a Schmidt hammer, which is sometimes used to estimate relative concrete strengths in the field.
The ultimate strength of concrete is influenced by the water-cementitious ratio (w/cm), the design constituents, and the mixing, placement and curing methods employed. The total quantity of cementitious materials (portland cement, slag cement, pozzolans) can affect strength, water demand, shrinkage, abrasion resistance and density. All concrete will crack independent of whether or not it has sufficient compressive strength. In fact, high Portland cement content mixtures can actually crack more readily due to increased hydration rate. As concrete transforms from its plastic state, hydrating to a solid, the material undergoes shrinkage. Plastic shrinkage cracks can occur soon after placement but if the evaporation rate is high they often can actually occur during finishing operations, for example in hot weather or a breezy day. The internal forces in common shapes of structure, such as arches, vaults, columns and walls are predominantly compressive forces, with floors and pavements subjected to tensile forces. Compressive strength is widely used for specification requirement and quality control of concrete. Engineers know their target tensile (flexural) requirements and will express these in terms of compressive strength.
Wired.com reported on April 13, 2007 that a team from the University of Tehran, competing in a contest sponsored by the American Concrete Institute, demonstrated several blocks of concretes with abnormally high compressive strengths between 340 and 410 MPa (49,000 and 59,000 psi) at 28 days.[2] The blocks appeared to use an aggregate of steel fibres and quartz – a mineral with a compressive strength of 1100 MPa, much higher than typical high-strength aggregates such as granite (100–140 MPa or 15,000–20,000 psi). Reactive powder concrete, can be even stronger, with strengths of up to 800 MPa (116,000 PSI).[3] These are made by eliminating large aggregate completely, carefully controlling the size of the fine aggregates to ensure the best possible packing, and incorporating steel fibers (sometimes produced by grinding steel wool) into the matrix. Reactive powder concretes may also make use of silica fume as a fine aggregate. Commercial reactive powder concretes are available in the 17–21 MPa (2,500–3,000 psi) strength range.
 
(deadline: 2021-04-25 23:55:00)
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BEGIN:VEVENT
DTSTART:20210615T120000
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SUMMARY:[DEADLINE] EXCAVATION - FOUNDATION
DESCRIPTION:Σας ανεβάζω εδώ το κείμενο που σας έλειπε.
 
Δρ Αλέξανδρος Παπάνης
(deadline: 2021-06-15 12:00:00)
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BEGIN:VEVENT
DTSTART:20210615T144000
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SUMMARY:[DEADLINE] Τελικές Εξετάσεις Ιούνιος 2021
DESCRIPTION:Παρακαλώ απαντήστε σε όλα τα ερωτήματα.
Ο Διδάσκων
Δρ Αλέξανδρος Παπάνης
(deadline: 2021-06-15 14:40:00)
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BEGIN:VEVENT
DTSTART:20210731T230000
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SUMMARY:[DEADLINE] Κείμενα
DESCRIPTION:(deadline: 2021-07-31 23:00:00)
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BEGIN:VEVENT
DTSTART:20210731T230000
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SUMMARY:[DEADLINE] Κείμενα
DESCRIPTION:(deadline: 2021-07-31 23:00:00)
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BEGIN:VEVENT
DTSTART:20211004T203000
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SUMMARY:[DEADLINE] Σεπτέμβριος 2021 - Τελικές Εξετάσεις Πολιτικών Μηχανικών
DESCRIPTION:Παρακαλώ απάντήστε σε ΟΛΕΣ τις ερωτήσεις.
Δρ Αλέξανδρος Παπάνης
(deadline: 2021-10-04 20:30:00)
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BEGIN:VEVENT
DTSTART:20230110T235500
DURATION:PT00H00M00S
SUMMARY:[DEADLINE] 1ο Εξάμηνο - Εργασίες 
DESCRIPTION:Μπορείτε να ανεβάσετε τις Εργασίες σας στην Αγγλική Τεχνική Ορολογία -1ο Εξάμηνο εδώ σε ένα ή δύο αρχεία ή με τη μορφή φωτογραφίας.
Ο Διδάσκων
Δρ Αλέξανδρος Παπάνης
 
(deadline: 2023-01-10 23:55:00)
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BEGIN:VEVENT
DTSTART:20230110T235500
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SUMMARY:[DEADLINE] 28 Νοεμβρίου 2022-1ο Εξάμηνο - Εργασίες
DESCRIPTION:Παρακαλώ ανεβάστε εδω τις εργασίες σας
(deadline: 2023-01-10 23:55:00)
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BEGIN:VEVENT
DTSTART:20230110T235500
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SUMMARY:[DEADLINE] 1o Εξάμηνο-Εργασία
DESCRIPTION:Παρακαλώ ανεβάστε ΕΔΩ τις Εργασίες σας.
Ο Διδάσκων
Δρ Αλέξανδρος Παπάνης
(deadline: 2023-01-10 23:55:00)
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BEGIN:VEVENT
DTSTART:20231222T235500
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SUMMARY:[DEADLINE] Εργασία της 4ης Δεκεμβρίου 2023
DESCRIPTION:Παρακαλώ ανεβάστε εδω την Εργασία σας.
Δρ Αλέξανδρος Παπάνης
Προθεσμία Υποβολής: 22/12/2023, 23:59μμ
(deadline: 2023-12-22 23:55:00)
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