L&T EduTech
Concreting Practices
L&T EduTech

Concreting Practices

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积累特定领域的专业知识

本课程是 Construction Techniques and Practices 专项课程 专项课程的一部分
在注册此课程时,您还会同时注册此专项课程。
  • 向行业专家学习新概念
  • 获得对主题或工具的基础理解
  • 通过实践项目培养工作相关技能
  • 获得可共享的职业证书

该课程共有4个模块

This module Blending of concrete delves in to a crucial process in the preparation of concrete mixtures to ensure that the final product meets the desired strength, durability, and workability specifications. Blending is required to achieve a homogeneous mix of concrete that meets specific project requirements Blending fine aggregates involves combining different grades of sand to achieve the desired fineness modulus. This process helps in controlling the water demand and workability of the concrete mix. Blending coarse aggregates improves the packing density of the aggregate, reduces voids, and minimizes the amount of cement paste required. Use a mix of coarse and fine aggregates that ensures the concrete has the desired workability and strength.

涵盖的内容

14个视频1个作业

The module Mix Design aims to provide learners the process of selecting suitable ingredients for concrete and determining their relative proportions to produce a concrete mix with the desired properties such as strength, durability, and workability. Nominal mix design involves for small-scale construction where precise control over the mix proportions is not critical. Volumetric mix design, also known as volume batching, involves measuring the quantities of ingredients by volume rather than weight. The absolute volume method is a more precise approach to mix design, where the volume of each ingredient (cement, water, fine aggregate, coarse aggregate, and any admixtures) is calculated based on its specific gravity.

涵盖的内容

8个视频1个作业

The module Tests on Concrete and Finishing and Curing together covers essential tests and processes to ensure concrete’s performance and durability throughout its life cycle. Workability, indicating ease of handling concrete, is measured using the slump test. The compressive test assesses the ability to withstand axial loads, while the flexural and split tensile tests evaluate resistance to bending and tensile stress. Proper finishing and curing are crucial to achieving the desired strength, surface quality, and long-term durability. These steps protect fresh concrete from environmental conditions, physical damage, and chemical attacks, ensuring optimal performance in construction projects.

涵盖的内容

18个视频1个作业

The learners will be able to explore on the Issues in Concrete Projects which often arise due to improper handling, environmental conditions, or inadequate construction practices. Plastic shrinkage cracks occur in the surface of freshly placed concrete due to rapid loss of moisture before the concrete gains sufficient strength. Plastic settlement occurs when the heavier components of the concrete (aggregates) settle while the concrete is still plastic. Honeycombing refers to voids or pockets of air trapped in the concrete, resulting from inadequate compaction or improper placement. A cold joint occurs when there is a delay between placing successive batches of concrete, leading to a weak interface between them. Bug holes, also known as blowholes, are small air pockets or voids on the surface of formed concrete. Insufficient cover can lead to corrosion of the reinforcement due to exposure to environmental elements, compromising the structural integrity and durability of the concrete.

涵盖的内容

7个视频1个作业

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