Class 8 Exam > Class 8 Videos > English Poorvi Class 8 - New NCERT > A Concrete Example
A Concrete Example Video Lecture | English Poorvi Class 8 - New NCERT
FAQs on A Concrete Example Video Lecture - English Poorvi Class 8 - New NCERT
| 1. What is the main purpose of concrete in construction? |  |
Ans. The main purpose of concrete in construction is to provide a strong, durable, and versatile material that can withstand various loads and environmental conditions. It is used in foundations, structures, pavements, and more due to its ability to be molded into different shapes and its resistance to water and fire.
| 2. How is concrete made? | |
Ans. Concrete is made by mixing cement, water, and aggregates such as sand and gravel. The cement acts as a binding agent, while the aggregates provide strength and bulk. The mixture is then poured into molds and allowed to cure, which means it hardens and gains strength over time.
| 3. What are the different types of concrete? | |
Ans. There are several types of concrete, including normal strength concrete, high-strength concrete, reinforced concrete, and lightweight concrete. Each type has specific properties and is used for different applications. For example, reinforced concrete contains steel bars to improve tensile strength, while lightweight concrete uses lighter aggregates for reduced weight.
| 4. What are the advantages of using concrete in construction? | |
Ans. The advantages of using concrete in construction include its high compressive strength, durability, fire resistance, and low maintenance requirements. Additionally, concrete can be molded into various shapes, making it suitable for diverse architectural designs. It also has good thermal mass, helping to regulate building temperatures.
| 5. How does curing affect the strength of concrete? | |
Ans. Curing is a crucial process that affects the strength of concrete. It involves maintaining adequate moisture and temperature for the concrete during the hardening process. Proper curing helps to prevent cracks, enhances strength, and ensures that the concrete reaches its maximum potential strength over time.
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Sep 24, 2025
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Video Description: A Concrete Example for Class 8 2025 is part of English Poorvi Class 8 - New NCERT preparation.
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Video Lecture & Questions for A Concrete Example Video Lecture | English Poorvi Class 8 - New NCERT - Class 8 full syllabus preparation | Free video for Class 8 exam to prepare for English Poorvi Class 8 - New NCERT.
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