Building material:-Concrete Material
Content:-Building material lecture
- General Outline
- What is Building material ?
- What is CONCRETE?
- COMPONENTS OF CONCRETE
- ADVANTAGES AND DISADVANTAGES OF CONCRETE
- CONCRETE & COMPOSITES
- CONCRETE COMPOSITES
- DESIGNATION OF NORMAL
- PERFORMANCE OF CONCRETE
If you remember in the last module, last lecture we talked about various materials in construction. In this module, and of course also in subsequent module we shall be talking about the most popular construction Building material , that is concrete.
General outline of this lecture would be something like this. First, we will talk of concrete as a material, and therefore in this concrete as the material, we shall be talking about components of concrete. Well, concrete as a composite. Now, what is composite? I shall define this a little bit later, but for the time being let us understand concrete as a composite and that is what we will discuss in this lecture.
Concrete has got a wide range of properties these days and naturally, therefore varieties of types of concrete. One of the type is the ordinary concrete, which is most popular and most commonly used and we will then, talk about ordinary concrete and its designation. And lastly, we will talk about performance of concrete. Performance of concrete, we shall be discussing about that at the end.
So, to start with, we should talk about what is concrete. Now, first of all, let us understand what it is made of. Ordinary concrete is made by mixing inorganic material known as cement and with water, together with some natural sand or stone dust and natural stones that may be crushed or may be uncrushed. This is visible, this is visible from the figure here. This is visible in the figure here.
This is cement, this is sand and this is stone or coarse aggregate cement. When you add with water it reacts, forming artificial stone like structure as solid hardened mass and that is what give us the cementing property as far as concrete is concerned. But since cement is the costliest of all the materials in case of concrete, therefore we should restrict its use in concrete.
Besides, there are some other associated problems of shrinkage, etc. So, bulk of the materials in concrete system, it is formed by the aggregates and cements are used as cement and water or cementing material of the similar kind are used as binded materials to find this skeleton materials, that is, the aggregates. So, aggregates are binded together by the cement in concrete system. So, that is what is concrete. In other words, it can be set in artificial stones made up of stone sand and a binding material. This binding, common binding material is cement and water.