Models of Special Concretes
Learn the fundamentals of self-compacting concrete and fibre-reinforced concrete in this free online course.Publisher: NPTEL
CertificationView course modules
One of a contractors’ most dreaded experiences in concrete construction is striking off formwork only to find honeycombed concrete and empty patches, especially around corners, despite perhaps having put in the best efforts in carefully placing and compacting the concrete. This situation usually results in costly and time-consuming repairs and possible demolition and reworks, depending on the defects in the affected concrete structure. This outcome is mainly caused by inadequate compaction or closed-spaced reinforcing steel that makes it hard for concrete to flow and occupy all the spaces enclosed in formwork as needed. Based on this kind of experience, researchers have developed, over time, a special type of concrete known as self-compacting concrete, which flows freely through confined spaces and self-compacts without the need for vibration or mechanical compaction. In this free online course, you will learn more about this specialised type of concrete, together with a different kind of special concrete known as fibre-reinforced concrete. First, you will study the history of Self-Compacting Concrete (SCC) and the research that resulted in its invention. Then, you will discover its uses and advantages as compared to ordinary concrete.
Next, you will uncover the characteristics of SCC and the methods used for testing SCC to check whether the different types of parameters match the design intent. You are probably wondering how concrete can flow freely and compact itself while at the same time achieving the required strength in the hardened state. You will understand the science and engineering behind it when the proportioning of SCC will be elaborated. The methods used to determine the ratios in which the various ingredients should be mixed to attain the desired properties of SCC will be explained. While designing the mix proportions, it is always vital to ascertain the flow behaviour of the concrete to confirm whether it will achieve the requirements. Therefore, you will study the rheology of concrete and cement paste, and the methods and apparatus used to test the flow characteristics of these materials. After this, you will be introduced to Fibre-Reinforced Concrete (FRC), beginning with the purpose for which it was invented, followed by the factors that control its performance and the types of fibres used in making it. The process of proportioning ingredients appropriately and mixing them to result in FRC of the desired characteristics will also be discussed.
Lastly, you will gain knowledge on the properties of FRC in its hardened state and the parameters that affect the characteristics. In the field of civil and structural engineering, circumstances do arise which render ordinary concrete unsuitable. Such situations would require the use of these special types of concrete. Therefore, the knowledge and skills in their design and use would be of utmost importance in such situations. It is therefore crucial that professionals in the construction industry should be well prepared in this respect. Therefore, this course is intended for anyone involved in construction, from civil engineers, contractors, structural engineers to technicians and artisans, to prepare them to handle such challenging circumstances successfully. Whether you are a beginner in the building and construction industry or an experienced professional seeking to enrich your knowledge and skill or aspire to join the industry in future, this course is for you, so do not hesitate. Start the course now!Start Course Now
Self-Compacting Concrete - Learning Outcomes
Introduction to Self-Compacting Concrete
Characteristics of Self Compacting Concrete
Proportioning Self Compacting Concrete
Self-Compacting Concrete - Lesson Summary
Fibre-Reinforced Concrete - Learning Outcomes
Flow Behaviour of Materials
Introduction to Fibre-Reinforced Concrete
Proportioning Fibre-Reinforced Concrete
Properties of Fibre-Reinforced Concrete
Fibre-Reinforced Concrete - Lesson Summary
By the end of this course, you will be able to:
- Outline the history of self-compacting concrete and fibre-reinforced concrete.
- Explain the uses and advantages of self-compacting concrete.
- List the characteristics of self-compacting concrete and fibre-reinforced concrete.
- Describe the procedure for proportioning self-compacting concrete and fibre-reinforced concrete.
- State the apparatus used to test the flow characteristics of concrete and cement paste.
- Discuss the parameters that affect the characteristics of fibre-reinforced concrete.
All Alison courses are free to enrol, study and complete. To successfully complete this Certificate course and become an Alison Graduate, you need to achieve 80% or higher in each course assessment. Once you have completed this Certificate course, you have the option to acquire an official Certificate, which is a great way to share your achievement with the world. Your Alison Certificate is:
Ideal for sharing with potential employers - include it in your CV, professional social media profiles and job applications
An indication of your commitment to continuously learn, upskill and achieve high results
An incentive for you to continue empowering yourself through lifelong learning
Alison offers 3 types of Certificates for completed Certificate courses:
Digital Certificate - a downloadable Certificate in PDF format, immediately available to you when you complete your purchase
Certificate - a physical version of your officially branded and security-marked Certificate, posted to you with FREE shipping
Framed Certificate - a physical version of your officially branded and security-marked Certificate in a stylish frame, posted to you with FREE shipping
All Certificates are available to purchase through the Alison Shop. For more information on purchasing Alison Certificates, please visit our FAQs. If you decide not to purchase your Alison Certificate, you can still demonstrate your achievement by sharing your Learner Record or Learner Achievement Verification, both of which are accessible from your Dashboard. For more details on our Certificate pricing, please visit our Pricing Page.