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Handbook on Concrete Mixes (Based on Indian Standards)

Handbook on Concrete  Mixes (Based  on  Indian  Standards)


CONTENTS

1.  INTRODUCTION

1.1  Concrete  Mix as  a  System
1.2  Classification  of  Concrete  Mixes
1.2.1  Grades  of  Concrete

2.  CONCRETE  MAKING  MATERIALS

2.0  General
2.1  Cements
2.1.1  Hydration  of  Cements
2.1.2  Portland  Pozzolana  and  Slag Cements
2.1.3  Tests  on  Cements
2.2  Aggregates
2.2.1  Classification  of  Aggregates
2.2.1.1  General
2.2.1.2  Geological  Classification  of  Natural  ,Aggregates
2.2.2  Properties  of  Natural  Aggregates
2.2.2.1  Mechanical  Properties
2.2.2.2  Particle  Shape  and  Texture
2.2.2.3  Porosity  and  Absorption
2.2.2.4  Deleterious  Constituents
2.2.2.5  Soundness  of  Aggregates
2.2.2.6  Alkali-Aggregate  Reaction
2.2.3  Lightweight  Aggregates
2.3  Water
2.3.1  Miscellaneous  Inorganic  Impurities
2.3.2  Silt  or  Suspended  Clay  Particles
2.3.3  Oil  Contamination
2.3.4  Sea  Water
2.3.5  Curing  Water
2.4  Admixtures
Accelerating  Admixtures  27
Retarding  Admixtures  28
Water-Reducing  Admixtures
Air-Entraining  Admixtures  29
Information  on  Admixtures  29.

3.  PROPERTIES  OF-FRESH  AND  HARDENED  CONCRETE

3.0  Introduction  55
3.1  Workability  55
3.1.1  Different  Measures  of  Workability  55
3.1.2  Factors  Affecting  Workability  56
3.1.2.1  Influence  of  Materials  and  Mix  Proportions  56
3.1.2.2  Effects  of  Time  and  Temperature  on  Workability  57
3.1.3  Requirement  of  Workability  58
3.2  Compressive  Strength  58
3.2.1  Influence  of  Mix  Proportions  58
3.2.2  Effect  of  Placing,  Compaction  and  Curing  60
3.2.2.1  Steam  Curing  of  Concrete  60
3.2.3  Relation  with  Tensile  Strength  61
3.3  Durability  of  Concrete  62

4.  VARIABILITY  OF  CONCRETE  STRENGTH  -  STATISTICAL ASPECTS

4.1  Measures  of  Variabilities  of  Concrete  Strength
4.1.1  Factors  Contributing  to  Variability
4.1.2  The  Distribution  of  Results
4.1.3  Characteristic  Strength
4.1.4  Target  Mean  Strength
4.2  Statistical  Concepts  in  Concrete  Mix  Design
4.3  Acceptance  Criteria

5.  PRINCIPLES  OF CONCRETE  MIX  DESIGN  

5.1  Basic  Considerations  95
5.2  Factors  in  the  Choice  of  MixDesign  95
5.3  Outline  of  Mix  Design  Procedure  96

6.  METHODS  OF CONCRETE  MIX  DESIGN

6.0  Introduction
6.1  The  AC1 Mix  Design  Practice
6.2  The  USBR  Mix  Design  Practice
6.3  The  British  Mix  Design  Method  (DOE  Method)
6.4  Mix  Design  in Accordance  with  Indian  Standard  Recommended Guidelines  for  Concrete  Mix  Design

7.  EXTREME  WEATHER  CONCRETING  

7.1  Hot  Weather  Concreting  12s
7.1.1  Effects  of  Hot  Weather  on  Concrete  12s
7.1.2  Recommended  Practices  and  Precautions  126
7.1.2. I  Temperature  Control  of  Concrete  Ingredients  126
127  7.1.2.2  Proportioning  of  Concrete  Mix  Materials  and  Mix Design
7.1.2.3  Production  and  Delivery
7.1.2.4  Placement,  Protection  and  Curing
7.2  Cold  Weather  Concreting
7.2.1  Effects  of  Cold  Weather  on  Concreting
7.2.2  Recommended  Practice
7.2.2.1  Temperature  Control  of  Concrete  Aggregates
7.2.2.2  Use of  Insulating  Formwork
7.2.2.3  Proportioning  of  Concrete  Ingredients
7.2.2.4  Placement,  Protection  and  Curing
7.2.2.5  Delayed  Removal  of  Formwork

8.  TESTING  OF CONCRETE  MIXES  

8.1  Sampling  and  Testing  of  Concrete  139
8.2  Frequency  of  Sampling  139
8.3  Workability  Tests  of  Fresh  Concrete  139
8.4  Analysis  of  Fresh  Concrete  140
8.5  Measurement  of  Air  Content  140
8.6  Setting  Time  of  Concrete  140
8.7  Tests  for  Strength  141
8.8  Analysis  of  Hardened  Concrete  142

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I am Thomas Britto here to share my experiences in the civil engineering field to all my readers.Today many students are struggling to buy books at high prices. So I decided to start a blog and share my experience and knowledge with all my readers.


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