This Book is a report of detailed experimental work carried out on Strength Characteristics of Volcanic Ash Blended Laterized Concrete. It offers data on chemical and physical properties of volcanic ash, effects of curing age and percentage replacement of cement with volcanic ash (VA) on the compressive, tensile splitting and flexural strengths characteristics of laterized concrete. It further examined the existing relationships between compressive, tensile splitting and flexural strengths for granite concrete and its applicability to VA-blended cement laterized concrete with a view to ascertaining the suitability of VA as a pozzolanic material in the production of laterized concrete. It is a must have for every concrete practitioner interested in utilization of alternative binders in concrete.