Strength, permability and void content on pervious concrete with varying sizes of aggregates

Table of Contents

CHAPTER-1 INTRODUCTION

1.1 General

1.2 Pervious concrete

1.3 History

1.4 Pervious concrete Indian scenario

1.5 Need for present work

1.6 Objectives of the present work

1.7 General Properties of pervious concrete

1.8 Advantages of pervious concrete

1.9 Disadvantages of pervious concrete

1.10 Major application of pervious concrete

1.11 Organization of thesis

CHAPTER-2 LITERATURE REVIEW

2.1 General

2.2 Composition of concrete

2.3 Properties of concrete

2.4 Literature analysis

CHAPTER-3 CONCRETE INGREDIENTS AND THEIR PROPERTIES

3.1 General

3.2 Materials used

3.2.1 Cement

3.2.2 Benefits of cement

3.2.3 Tests conducted on the cement and results

3.3 Aggregates

3.3.1 Classification of aggregates

3.3.2 Properties of aggregates

3.4 Classification of aggregates

3.4.1 Particle shape and texture

3.4.2 Bond of aggregates

3.4.3 strength of aggregates

3.4.4 Deterious substances

3.4.5 Grading of aggregates

3.4.6 Maximum size of coarse aggregates

3.4.7 Fine aggregates

3.5 Test conducted on fine aggregates

3.6 Tests conducted on coarse aggregates

CHAPTER-4 EXPERIMENATL INVESTIGATION

4.1 General

4.2 Workability of pervious concrete

4.2.1 Slump cone test

4.3 Tests on pervious concrete

4.3.1 Bulk Density

4.4 Void Content

4.4.1 Void content for calculation for 0 % of fines for 20mm aggregates

4.4.2 Sample calculation

4.4.3 Void content for calculation for 0% of fines for 12mm aggregates

4.4.4 Sample calculation

4.4.5 Void content for calculation for 0% of fines for 20mm aggregates

4.4.6 Sample calculation

4.5 Permeability

4.6 Permeability calculation procedure

4.7 Storage capacity

CHAPTER 5 MIX DESIGN OF PERVIOUS CONCRETE

5.1 General

5.2 Mix design of pervious concrete

5.2.1 Void content

5.2.2 Bulk density

5.2.3 Water content

5.3 Mix design criteria

5.4 NRMCA mix design procedure

5.4.1 Quantity of materials obtained for 0% of addition of sand

5.4.2 Quantity of materials obtained for 0.25% of addition of sand

5.4.3 Quantity of materials obtained for 0.75% addition of sand

5.5 Compressive strength of pervious concrete

5.6 Preparation of cube specimen

5.6.1 Mixing

5.6.2 Hand mixing

5.6.3 Preparing of cubes for placing concrete

5.6.4 Sampling

5.6.5 Symbolizing the specimens

5.6.6 Curing

5.6.7 Procedure after curing specimens

5.7 Compressive strength of pervious concrete

CHAPTER 6 COMPRESSIVE STRENGTH OF PERVIOUS CONCRETE

6.1 Compressive strength

CHAPTER 7 COST COMPARISION

7.1 General

7.2 Cost comparison between convectional concrete and pervious concrete

CHAPTER 8 CONCLUSION

8.1 Conclusion

8.2 Scope for future work

CHAPTER 8 REFERENCES

9.1 References

Research Objectives & Topics

This study focuses on experimental investigations of pervious concrete, specifically analyzing the impact of varying aggregate sizes and the addition of sand on mechanical properties such as compressive strength, permeability, and void content to provide effective solutions for urban stormwater management.

• Optimization of mix design for pervious concrete using different aggregate sizes (12mm, 20mm, and combinations).
• Investigation of the effects of sand addition (0%, 0.25%, 0.75%) on structural and hydrological performance.
• Evaluation of compressive strength development over 7, 14, 28, 56, and 90 days.
• Analysis of permeability and void content in relation to mix proportions and material components.
• Cost comparison between pervious and conventional concrete to assess economic feasibility for practical application.

Excerpt from the Book

Summary of Chapters

CHAPTER-1 INTRODUCTION: Outlines the significance of pervious concrete as an eco-friendly material for stormwater management and establishes the research objectives.

CHAPTER-2 LITERATURE REVIEW: Reviews existing studies on concrete composition, properties, and specific performance benchmarks of pervious concrete.

CHAPTER-3 CONCRETE INGREDIENTS AND THEIR PROPERTIES: Details the materials used, including cement and aggregates, and standard laboratory tests conducted to verify their suitability.

CHAPTER-4 EXPERIMENATL INVESTIGATION: Describes the methodology for testing workability, bulk density, void content, and permeability of the concrete specimens.

CHAPTER 5 MIX DESIGN OF PERVIOUS CONCRETE: Explains the mix design procedures, material quantities, and specimen preparation methods adopted for the experimental study.

CHAPTER 6 COMPRESSIVE STRENGTH OF PERVIOUS CONCRETE: Presents the compressive strength results for various mixes at different curing ages and analyzes the performance data.

CHAPTER 7 COST COMPARISION: Compares the financial implications and construction costs of pervious concrete versus conventional concrete.

CHAPTER 8 CONCLUSION: Summarizes the experimental findings, confirming the impact of aggregate size and sand content on strength and permeability.

CHAPTER 8 REFERENCES: Lists the academic and technical sources consulted for this research project.

Keywords

Pervious concrete, Compressive strength, Permeability, Void content, Coarse aggregates, Sand addition, Stormwater management, Mix design, Bulk density, Curing, Civil engineering, Sustainable pavement, Structural integrity, Water infiltration, In-place density.

Frequently Asked Questions

What is the primary focus of this research?

The research explores the experimental performance of pervious concrete by analyzing how varying aggregate sizes and the inclusion of small percentages of sand affect its compressive strength, permeability, and void content.

What are the key thematic areas covered?

The study covers mix design, mechanical properties testing, hydrological efficiency (permeability and storage), and a comparative economic analysis between pervious and conventional concrete pavements.

What is the main objective of this study?

The primary objective is to determine an optimal mix proportion that balances structural strength with the necessary drainage capacity to mitigate urban water logging and flooding.

What scientific methods were employed?

The study utilizes experimental laboratory testing, including standard slump tests, bulk density measurements, variable head permeability tests, and compressive strength testing on casted concrete cube specimens over several curing periods.

What does the main part of the report cover?

The main body details the material characteristics, the specific mix design procedures, the step-by-step experimental investigation, and the resulting data (tables and graphs) illustrating the relationships between ingredients and performance metrics.

Which keywords best describe this work?

Key terms include pervious concrete, compressive strength, permeability, void content, and stormwater management, which characterize the engineering and environmental focus of the paper.

How does the addition of sand affect the pervious concrete?

According to the findings, adding small percentages of sand influences the trade-off between structural strength and permeability; while it may increase strength, it reduces the void ratio and thus the drainage capacity of the material.

What is the significance of the cost comparison section?

It demonstrates that while initial material costs may vary, pervious concrete is often more economical in the long run because it functions as an integrated drainage system, reducing the need for separate infrastructure like retention ponds and underground piping.