The document discusses various causes of non-structural cracks in concrete, including plastic settlement, plastic shrinkage, early thermal contraction, drying shrinkage, corrosion of reinforcement, sulfate attack, and alkali-aggregate reaction. It provides details on the mechanisms behind each cause and methods to mitigate cracking, such as mix design modifications, curing practices, and construction techniques.
Reasons and solution to cracks in buildings.
<div dir="ltr"><br>Reasons and solution to cracks in buildings.<br><blockquote style="margin: 1.5em 0pt;"></blockquote></div>
Building crack,types,causes & its repairingGAUTAMSWALA
This presentation is all about cracks occur in building.It includes all types of cracks,its major causes and repairing techniques and finally a conclusion from which viewers can fully understand
about building cracks.
Various Reasons of Cracks in Buildings
Cracks can occur due to chemical reactions in construction materials, changes in temperature and climate, foundation movements and settling of buildings, environmental stresses like nearby trains, earth quakes etc. Faulty design, bad... more
Reasons and solution to cracks in buildings.
<div dir="ltr"><br>Reasons and solution to cracks in buildings.<br><blockquote style="margin: 1.5em 0pt;"></blockquote></div>
Building crack,types,causes & its repairingGAUTAMSWALA
This presentation is all about cracks occur in building.It includes all types of cracks,its major causes and repairing techniques and finally a conclusion from which viewers can fully understand
about building cracks.
Various Reasons of Cracks in Buildings
Cracks can occur due to chemical reactions in construction materials, changes in temperature and climate, foundation movements and settling of buildings, environmental stresses like nearby trains, earth quakes etc. Faulty design, bad... more
62
مبادرة
#تواصل_تطوير
المحاضرة الثانية والستون من المبادرة مع
الدكتور/ محمد الحسين
استاذ الهندسة الجيوتقنية والانشائية
بعنوان
"تقييم حالة المنشآت"
"Condition Assessment Of Structures"
التاسعة مساء توقيت مكة المكرمة الإثنين28سبتمبر2020
وذلك عبر تطبيق زووم
Meeting ID: 862 8702 7592
https://us02web.zoom.us/meeting/register/tZIvf-6orDwvE9av_p11FxWnPCOsiSLs4SmD
علما ان هناك بث مباشر للمحاضرة على وقناة يوتيوب
https://www.youtube.com/user/EEAchannal
للتواصل مع إدارة المبادرة عبر قناة تيليجرام
الرابط
https://t.me/EEAKSA
رابط اللينكدان والمكتبة الالكترونية
www.linkedin.com/company/eeaksa-egyptian-engineers-association/
رابط التسجيل العام للمحاضرات
https://forms.gle/vVmw7L187tiATRPw9
Fahad types and causes of cracks in concrete structuresFAHAD ALI KHAN
This technical seminar provides basic information about the various types of cracks in concrete and their potential effect on the long-term performance of concrete structures.
In this PPT, you will come to know about how cracks form on the structure and what preventive measures should follow to overcome cracks and different types of cracks
Methodology for Prevention and Repair of Cracks in BuildingGRD Journals
Cracks in building are a common occurrence. It affects the stability and appearance of buildings. So, it is important to understand the cause of cracks and the effective measures should be taken for prevention. Though cracks in concrete cannot be prevented entirely but they can be prevented by using proper material and technique of construction and considering criteria. Sometimes water penetrates through cracks in building and cause severe damage to building. There are many reason of occurrence of cracks like moisture, thermal movement, elastic deformation, chemical reaction, foundation movement, vegetation and earthquake. We all dream of a house structurally safe and aesthetically beautiful but it is not so easy. So, timely identification of such cracks and adopting preventive measures is essential. In this paper, we will discuss about the methodology for prevention and repair of cracks in building. This research paper also gives information about result of Rebound Hammer Test and Ultrasonic Pulse Velocity Test for determining strength of concrete. Because strength of concrete is also an influencing factor for repairing cracks in building. So, we can say if crack repair is assumed to be building of structure then this paper can be assumed as foundation of it.
Citation: Dimpy B. Patel, Bhagwan Mahavir College Of Engineering And Technology; Shyam Doshi ,Bhagwan Mahavir College Of Engineering And Technology; Kevina B. Patel ,Bhagwan Mahavir College Of Engineering And Technology; Kajal B. Patel ,Bhagwan Mahavir College Of Engineering And Technology; Pinal D. Mavani ,Bhagwan Mahavir College Of Engineering And Technology. "Methodology for Prevention and Repair of Cracks in Building." Global Research and Development Journal For Engineering 33 2018: 52 - 58.
Repair and maintainance of cracks [CIVIL ENGINEERING]Abhishek Bagul
Simple presentation with awesome animation effects. I had it for a short seminar last year. It contains following aspects:
1. Causes of cracks.
2. Types of cracks.
3. How to cure them.
It can be used by anyone.
A crack is a complete or incomplete separation of concrete into two or more parts produced by breaking or fracturing.
Cracks are one kind of universal problems of concrete construction as it affects the building artistic and it also destroys the wall’s integrity, affects the structure safety and even reduce the durability of structure
Carbon dioxide penetrates into the concrete through the cracks and speed up carbonation around the cracks, thus shortening the structure usage.
The cracks in the concrete wall would cause the leakage of the building; it reduces the stiffness, durability and seismic performance of buildings.
Cracks on the wall surface damage to the later rendering, will affect to the appearance.
62
مبادرة
#تواصل_تطوير
المحاضرة الثانية والستون من المبادرة مع
الدكتور/ محمد الحسين
استاذ الهندسة الجيوتقنية والانشائية
بعنوان
"تقييم حالة المنشآت"
"Condition Assessment Of Structures"
التاسعة مساء توقيت مكة المكرمة الإثنين28سبتمبر2020
وذلك عبر تطبيق زووم
Meeting ID: 862 8702 7592
https://us02web.zoom.us/meeting/register/tZIvf-6orDwvE9av_p11FxWnPCOsiSLs4SmD
علما ان هناك بث مباشر للمحاضرة على وقناة يوتيوب
https://www.youtube.com/user/EEAchannal
للتواصل مع إدارة المبادرة عبر قناة تيليجرام
الرابط
https://t.me/EEAKSA
رابط اللينكدان والمكتبة الالكترونية
www.linkedin.com/company/eeaksa-egyptian-engineers-association/
رابط التسجيل العام للمحاضرات
https://forms.gle/vVmw7L187tiATRPw9
Fahad types and causes of cracks in concrete structuresFAHAD ALI KHAN
This technical seminar provides basic information about the various types of cracks in concrete and their potential effect on the long-term performance of concrete structures.
In this PPT, you will come to know about how cracks form on the structure and what preventive measures should follow to overcome cracks and different types of cracks
Methodology for Prevention and Repair of Cracks in BuildingGRD Journals
Cracks in building are a common occurrence. It affects the stability and appearance of buildings. So, it is important to understand the cause of cracks and the effective measures should be taken for prevention. Though cracks in concrete cannot be prevented entirely but they can be prevented by using proper material and technique of construction and considering criteria. Sometimes water penetrates through cracks in building and cause severe damage to building. There are many reason of occurrence of cracks like moisture, thermal movement, elastic deformation, chemical reaction, foundation movement, vegetation and earthquake. We all dream of a house structurally safe and aesthetically beautiful but it is not so easy. So, timely identification of such cracks and adopting preventive measures is essential. In this paper, we will discuss about the methodology for prevention and repair of cracks in building. This research paper also gives information about result of Rebound Hammer Test and Ultrasonic Pulse Velocity Test for determining strength of concrete. Because strength of concrete is also an influencing factor for repairing cracks in building. So, we can say if crack repair is assumed to be building of structure then this paper can be assumed as foundation of it.
Citation: Dimpy B. Patel, Bhagwan Mahavir College Of Engineering And Technology; Shyam Doshi ,Bhagwan Mahavir College Of Engineering And Technology; Kevina B. Patel ,Bhagwan Mahavir College Of Engineering And Technology; Kajal B. Patel ,Bhagwan Mahavir College Of Engineering And Technology; Pinal D. Mavani ,Bhagwan Mahavir College Of Engineering And Technology. "Methodology for Prevention and Repair of Cracks in Building." Global Research and Development Journal For Engineering 33 2018: 52 - 58.
Repair and maintainance of cracks [CIVIL ENGINEERING]Abhishek Bagul
Simple presentation with awesome animation effects. I had it for a short seminar last year. It contains following aspects:
1. Causes of cracks.
2. Types of cracks.
3. How to cure them.
It can be used by anyone.
A crack is a complete or incomplete separation of concrete into two or more parts produced by breaking or fracturing.
Cracks are one kind of universal problems of concrete construction as it affects the building artistic and it also destroys the wall’s integrity, affects the structure safety and even reduce the durability of structure
Carbon dioxide penetrates into the concrete through the cracks and speed up carbonation around the cracks, thus shortening the structure usage.
The cracks in the concrete wall would cause the leakage of the building; it reduces the stiffness, durability and seismic performance of buildings.
Cracks on the wall surface damage to the later rendering, will affect to the appearance.
Ajw final /certified fixed orthodontic courses by Indian dental academy Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
This lecture provides an introduction to some of the finer points in the production of high quality castings. The students will be able to understand the various processes for sealing porosity in badly made castings and to appreciate factors influencing the accuracy of castings, including a basic understanding of how to control and measure casting dimensions. Basic understanding of the foundry industry is assumed.
Presentation on Breaking conventions for low cost housingIEI GSC
By Anupam shil, DGM Tech Services Zydex Industries at
31st National Convention of Civil Engineers organised by Gujarat State Center, The Institution of Engineers (India) at Ahmedabad
Infrastructure & Asset Inspection - Multitechnology approach concrete. by Marcel Poser.
A complete overview of the most comprehensive range of tools for concrete NDT inspection and asset management.
This lecture demonstrates how to teach the principles and concepts of fracture mechanics as well as provide recommendations for practical applications; it provides necessary information for fatigue life estimations on the basis of fracture mechanics as a complementary method to the S-N concept. Background in engineering, materials and fatigue is required.
Similar to Control of ns cracks (conc soc 070411) (20)
16. Time to appearance
Hours Days Months Years
Plastic
Shrinkage
Plastic
Settlement
Early thermal
Drying
Shrinkage
Corrosion
Sulfate attack
Alkali-
aggregate
www.urs-scottwilson.com
20. Plastic settlement
• Occurs in first few hours
• Restraint to movement
causes cracking
• Cracks tend to follow
reinforcement
www.urs-scottwilson.com
21. Secondary influences
• Slag cement – may increase bleeding
• Fly ash cement - likely to reduce bleeding
• Slow setting rates - increase potential for
bleeding
• Depth of pour
• Ambient Temperature
• Aggregate grading
www.urs-scottwilson.com
48. Magnitudes of free movement
• Early age issues
• ~130C per 100kg/m3 of cement (CEM I)
• >500C for typical structures
• Unrestrained early age contractions ~ 300 ε
Cementitious Temperature
Cement
content rise
type
(kg/m3) (0C)
CEM I 340 31
30% fly ash 365 20
50% ggbs 355 21 300mm slab
70% ggbs 410 18 Cast in summer (20oC)
19mm plywood formwork
C32/40 concrete
www.urs-scottwilson.com
50. Factors Affecting Early Thermal Cracking
• Aggregate type
(7–14 ε / oC)
• Tensile strain capacity
(may be less with slag and fly ash)
• External restraint
(previous pours)
• Internal restraint
(temp. profiles in large members)
• Stress raisers
(changes in section)
• Reinforcement
(controls, but does not eliminate)
www.urs-scottwilson.com
