Preface

This book provides guidance on the treatment of environmental contamination arising from the cement industry and the use of concrete, a problem that requires the synergistic action of the scientific community.

The development and application of approaches and technologies that provide economic and sustainable development of concrete materials is an essential issue in concrete durability, structural design, and alternatives to traditional aggregates used in concrete material.

Authors of this book's chapters present advances in relevant fields related to assessing the sustainability of concrete with synthetic and recycled aggregate. The book contains nine chapters, organized into two sections that cover important research aspects of sustainable concrete technologies. The first section includes six chapters and opens with an introductory chapter that presents a brief overview of the characterizations of cement and modern sustainable concrete. Chapter 2 deals with structural and chemical analysis of new cement-based on eggshells and sand dunes (in southwest Algeria) stabilized with polyethylene terephthalate (PET). Chapter 3 discusses thermoactivated recycled cement, and Chapter 4 investigates the analysis of different approaches to sustainable concrete material. Chapter 5 examines the bearing capacity of concrete-filled steel tube columns, and Chapter 6 evaluates the freeze/thaw resistance of concrete.

The second section includes three chapters that discuss the production and applications of supplementary concrete. Chapter 7 discusses replacing cementitious materials for sustainable concrete productions, Chapter 8 discusses the application of supplementary cementitious materials in the precast concrete industry, and Chapter 9 discusses the application of a granular model to identify the granulometry of concrete material based on sand dunes.

The editor wishes to thank all the chapter authors for their valuable contributions and Author Service Manager Ms. Zvjezdana Tintor and the staff at IntechOpen for their assistance in finalizing this work.

> **Hosam M. Saleh** Egyptian Atomic Energy Authority, Cairo, Egypt

Section 1

Analysis and Characterization of Modified Concrete
