Stage 2: General Principles – Module 3 Concrete production and use | Concrete Technology and Construction Training

This module includes the following lessons:

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1

2.19 Material storage, batching & mixing

2.19.01 Contents

2.19.02 Summary and objectives

2.19.03 Types of batching and mixing plant

2.19.04 Dry batch plants – definition

2.19.05 Dry batch plants – advantages

2.19.06 Dry batch plants – adding water

2.19.07 Dry batch plants – consistence control

2.19.08 Dry batch plants – ribbon feeding

2.19.09 Batch-type plants with mixers – consistence control

2.19.10 Batch-type plants with mixers – costs

2.19.11 Choice of plant – small scale

2.19.12 Choice of plant – large scale

2.19.13 Choice of plant – pan and reversing drum mixers

2.19.14 Choice of plant – large capacity mixers

2.19.15 Choice of plant – paddle mixers

2.19.16 Choice of plant – self-compacting concrete

2.19.17 Choice of plant – mobile volumetric mixers

2.19.18 Choice of plant – site-mixed concrete

2.19.19 Storage and plant layout – site-mixed concrete

2.19.20 Choice of plant – precast concrete

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2.20 Concrete production & supply

2.20.01 Contents

2.20.02 Summary and objectives

2.20.03 Observable changes 1

2.20.04 Observable changes 2

2.20.05 Consistence – mixing

2.20.06 Consistence meters

2.20.07 Consistence – dry batching

2.20.08 Consistence – visual inspection

2.20.09 Consistence – acceptance

2.20.10 Excessively low consistence – rejection

2.20.11 Excessively low consistence – dry joints

2.20.12 Excessively low consistence – adding water 1

2.20.13 Excessively low consistence – adding water 2

2.20.14 Excessively low consistence – extra water

2.20.15 Excessively high consistence – stiffening over time 1

2.20.16 Excessively low consistence – stiffening over time 2

2.20.17 Excessively high consistence – rejection

2.20.18 Uniformity and colour 1

2.20.19 Uniformity and colour 2

2.20.20 Lumps 1

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2.21 Operation & maintenance of concrete production plant

2.21.01 Contents

2.21.02 Summary and objectives

2.21.03 Storage 1

2.21.04 Storage 2

2.21.05 Moving the materials

2.21.06 Proportioning the materials 1

2.21.07 Proportioning the materials 2

2.21.08 Mixing the concrete 1

2.21.09 Mixing the concrete 2

2.21.10 Mixing the concrete 3

2.21.11 Mixing the concrete 4

2.21.12 Mixing the concrete 5

2.21.13 Small scale on-site batching and mixing 1

2.21.14 Small scale on-site batching and mixing 2

2.21.15 Medium size site batching and mixing

2.21.16 Large scale site batching and mixing 1

2.21.17 Large scale site batching and mixing 2

2.21.18 Procedures for cleaning 1

2.21.19 Procedures for cleaning 2

2.21.20 Procedures for cleaning 3

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2.22 Ready-mixed concrete

2.22.01 Contents

2.22.02 Summary and objectives

2.22.03 Introduction

2.22.04 Advantages and economics 1

2.22.05 Advantages and economics 2

2.22.06 Advantages and economics 3

2.22.07 Advantages and economics 4

2.22.08 Production methods

2.22.09 Central mixing plant

2.22.10 Truckmixer dry batch

2.22.11 Truckmixer site

2.22.12 Mobile volumetric mixer

2.22.13 Storage & handling – aggregates

2.22.14 Storage & handling – cementitious

2.22.15 Storage & handling – water

2.22.16 Storage & handling – admixtures

2.22.18 Production & supply – continuous mixing

2.22.19 Capacities & dimensions

2.22.20 Contractual basis of supply

2.22.21 Provision – enquiry

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2.23 Precast concrete

2.23.001 Contents

2.23.002 Summary

2.23.003 Objectives 1

2.23.004 Objectives 2

2.23.005 Introduction

2.23.006 Advantages of precasting

2.23.007 Factors

2.23.008 Repetitive elements 1

2.23.009 Repetitive elements 2

2.23.010 Quality of surface and inspection

2.23.011 Abiliity to choose casting orientation 1

2.23.012 Ability to choose casting orientation 2

2.23.013 Ability to choose casting orientation 3

2.23.014 Restricted space

2.23.015 Time limits, unsocial hours and noise

2.23.016 Temporary works, falsework and scaffolding 1

2.23.17 Temporary works, falsework and scaffolding 2

2.23.018 Cleanliness

2.23.019 Special concretes 1

2.23.020 Special concretes 2

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2.24 Formwork & Falsework

2.24.31 Formwork arrangements 6

2.24.01 Contents

2.24.02 Summary and Objectives

2.24.03 Introduction

2.24.04 Definitions

2.24.05 Formwork principles

2-24-06 Falsework principles

2.24.07 Timber

2.24.08 Plywood

2.24.09 Hardboard

2.24.10 Cardboard

2.24.11 Steel

2.24.12 Plastics

2.24.13 Rubber and fabric

2.24.14 Aluminium

2.24.15 Concrete

2.24.16 Pressures on formwork

2.24.17 Pressures on soffit forms

2.24.18 Pressures on vertical forms 1

2.24.19 Pressures on vertical forms 2

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2.25 Reinforced concrete

2.25.02 Introduction

2.25.01 Contents

2.25.03 Definitions 1

2.25.04 Definitions 2

2.25.05 Definitions 3

2.25.06 Definitions 4

2.25.07 Loads on structures – self weight

2.25.08 Loads on structures – personnel

2.25.09 Loads on structures – equipment

2.25.10 Loads on structures – snow

2.25.11 Loads on structures – wind

2.25.12 Loads on structures – earthquake

2.25.13 Beams and slabs – simply supported

2.25.14 Unreinforced concrete beams

2.25.15 Reinforced concrete beams

2.25.16 Beams and slabs – continuous

2.25.17 Beams and slabs – partially restricted

2.25.18 Cantilevered beams

2.25.19 Beams and slabs – fixed

2.25.20 Shear 1

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2.26 Prestressed concrete

2.26.01 Contents

2.26.02 Summary and objectives

2.26.03 Introduction

2.26.04 Freyssinet video

2.26.05 What is prestressing

2.26.06 The principle 1

2.26.07 The principle 2

2.26.08 The principle 3

2.26.09 Equipment for pre-tensioning

2.26.10 Equipment for post-tensioning

2.26.11 Methods

2.26.12 Concrete strength

2.26.13 Loss of prestress 1

2.26.14 Loss of prestress 2

2.26.15 Loss of prestress 3

2.26.16 Loss of prestress 4

2.26.17 Operations – safety 1

2.26.18 Operations – safety 2

2.26.19 Stressing tendons 1

2.26.20 Stressing tendons 2

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2.27 Management

2.27.01 Contents

2.27.02 Summary and objectives

2.27.03 Introduction

2.27.04 Contracts

2.27.05 Construction stages 1

2.27.06 Construction stages 2

2.27.07 Construction stages 3

2.27.08 Construction projects 1

2.27.09 Construction projects 2

2.27.10 Construction projects 3

2.27.11 Construction projects 4

2.27.12 Supply chain 1

2.27.13 Supply chain 2

2.27.14 Precast concrete works 1

2.27.15 Precast concrete works 2

2.27.16 Precast concrete works 3

2.27.17 Precast concrete works 4

2.27.18 Ready-mixed concrete plant 1

2.27.19 Ready-mixed concrete plant 2

2.27.20 Ready-mixed concrete plant 3

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