Basic Properties of Concrete Materials
Study the properties of concrete and the design and proportioning of regular concrete mix in this free online course.Publisher: NPTEL
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In this free online course, you will learn how to proportion the different constituent materials that makeup concrete, in order to achieve a concrete mix of the desired qualities and properties. First, you will be introduced to the definition of ordinary or normal concrete and the materials that are used to make them. Concrete, being a composite material, is comprised of various elements mixed together. You will review the compositions of these constituent materials and their respective properties. The function performed by each of these materials in the development of concrete strength and other qualities will be described in detail. Thereafter, you will discover how concrete functions when it is in the fresh state and when it is in its hardened state. Here, the various characteristics of fresh concrete will be explained, alongside the characteristics of concrete in its hardened state. The objective of proportioning concrete mix is to find a suitable combination of relative amounts of constituent materials so that the resulting concrete has the required properties in the fresh and hardened state, and should be able to meet durability and other requirements depending on the structure and the environment. This knowledge and understanding will prepare you to be able to proceed to the next stage of learning how to create a concrete mix.
In the next section, you will study the detailed process of proportioning constituent materials in order to prepare a concrete mix. You will be guided through a systematic procedure on how to go about determining the proportion of the constituent materials in preparing a concrete mix design that will achieve the desired results. Afterwards, you will study how to analyse the resulting concrete mix and compare its qualities with those that have been anticipated from inception. Sometimes, the results obtained from the mix design do not meet the requirements that had been set out. For this reason, you will observe the procedure on how to adjust the mix in order to achieve the desired results in a trial and error process that is guided by the various standards that have been developed over time. Then, you will learn about pores or voids that are found in concrete, and what causes them. Their effect on the strength, permeability, and durability of concrete will also be analyzed. You will likewise study how to measure the size, distribution, volume, and density of these voids or pores.
Finally, you will learn about the different types of additives or admixtures that are added to concrete to achieve certain objectives. You will study how they are applied to concrete and how to compute the necessary quantity required in order for them to be effective as needed. Concrete is a very important building material that is commonly used to make structures of varying sizes and complexities and has been used for many years. Therefore, an in-depth understanding of how the various materials are proportioned and mixed to make concrete is essential for anyone in the construction industry. This course is therefore very important for anyone aspiring to become a civil engineer, contractor, or building technician. The course is also beneficial to professionals in the construction industry who would like to refresh their knowledge and understanding of concrete materials. So why wait? Start the course now.Start Course Now
Introduction to Concrete Materials
Learning Outcomes - Introduction to Concrete Materials
Introduction to Concrete Properties
Concrete: A Composite Material
Basic Properties of Fresh Concrete
Basic Properties of Hardened Concrete
Lesson Summary - Introduction to Concrete Materials
Concrete Mix Design and Admixtures
Learning Outcomes - Concrete Mix Design and Admixtures
Fundamentals of Proportioning Concrete Mixes
Proportioning of Normal Concrete Mixes
Concrete Mix Analysis and Adjustments
Pores and Porosity in Concrete
Admixtures in Concrete
Lesson Summary - Concrete Mix Design and Admixtures
By the end of this course, you will be able to:
- Define a concrete material and list its components
- List the properties of the materials used to make concrete
- Distinguish the properties of fresh and hardened concrete
- Estimate the right proportions of materials used in concrete making
- Outline the procedure for making adjustments to a concrete mix
- State the causes of the different types of pores in concrete.
- Explain the purpose and dosage of the different types of admixtures used in concrete.
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