This book highlights: mechanical and physical properties of various materials with emphasis on strength and durability; influence of various factors on these properties; causes of defects, their prevention and remedies; and, testing procedures of materials. This edition includes: materials changes in chapters dealing with cement, concrete, lime and many others; updated testing procedures; numerous revision of data and substitutions; and, smart and composite materials as a separate chapter. The book would serve as a through text for undergraduate students of civil engineering, architecture and construction technology. Practising engineers, architects and contractors would also find it a valuable reference source.