The work presented in this book aims are to i) understand and improve the bonding characteristics between crumb rubber and cement paste, and ii) scale-up the use of the material from lab to full-sized reinforced sections. Chapter One presents an introduction for this work while an extensive review of literature was summarised in Chapter Two . The methodology and the used materials were highlighted in Chapter Three. The experimental results of a parametric investigation that conducted to determine the effect of crumb rubber replacement on the fresh, mechanical and thermo-physical properties of PRC and SCRC at different w/c ratios was presented in Chapters Four and Five for PRC and SCRC respectively. In Chapter Six, the relative effects of different pre-coating/ treating methodologies were evaluated in terms of ITZ porosity, interfacial bonding, and mix air entrapment. The full-scale serviceability of steel-reinforced PRC and SCRC was experimentally measured and assessed in terms of mechanical structural behaviour, steel reinforcement bond-slip strength, and material durability including chloride ion diffusion and water penetration and the results were presented in Chapter Seven.