#concrete #concretemachinery #civilengineering

What is concrete
how concrete is made
composition of concrete
type of concrete
uses of concrete
What is concrete?
Concrete, an artificial stone-like mass, is the composite material that is created by mixing binding material (cement or lime) along with the aggregate (sand, gravel, stone, brick chips, etc.), water, admixtures, etc in specific proportions. Once all the ingredients -cement, aggregate, and water unit of measurement mixed inside the required proportions, the cement and water begin a reaction with one another to bind themselves into a hardened mass. This hardens the rock-like mass is the concrete.
Concrete = Binding Material + Fine Aggregate & Coarse Aggregate + Water + Admixture (optional)
What is Grade of Concrete?
Grade of concrete denotes its strength required for construction. For example, M30 grade signifies that compressive strength required for construction is 30MPa. The first letter in grade “M” is the mix and 30 is the required strength in MPa.Based on various lab tests, grade of concrete is presented in Mix Proportions. For example, for M30 grade, the mix proportion can be 1:1:2, where 1 is the ratio of cement, 1 is the ratio of sand and 2 is the ratio of coarse aggregate based on volume or weight of materials. The strength is measured with concrete cube or cylinders by civil engineers at construction site. Cube or cylinders are made during casting of structural member and after hardening it is cured for 28 days. Then compressive strength test is conducted to find the strength.

Based on the variations in materials and purposes, concrete can be classified into three basic categories-1- Lime Concrete 2- Cement Concrete3- Reinforced Cement Concretes
In general, there are four concrete sorts to settle on from counting on the work being done. Such as-1- Dry Ready Mix 2- Ready Mix 3- Bulk Dry Materials 4- Transit Mix
There are other various types of concrete for different applications that are created by changing the proportions of the main ingredients. Such as:
1-High-strength Concrete 7-High-Performance Concrete 2-Stamped Concrete 8-Vacuum Concrete
3-Self-consolidating Concretes 9-Asphalt Concrete
4-Shotcrete 10-Polymer Concrete 5-Glass Concrete 11-Light-Transmitting Concrete 6-Rapid Strength Concrete

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