Workability and quality control of concrete
Preface
This book is a logical follow-up of the monograph The Workability of Concrete which
was published in 1976, and which was inspired by a suggestion from the then Cement
and Concrete Association, as a result of lectures I gave for some twenty years on the
Advanced Concrete Technology Course held at the Association’s Training Centre at Fulmer
Grange. Since 1976 a great deal of work has been done in studies of workability
measurement and its applications, and it has been demonstrated beyond doubt that the
flow properties of fresh concrete can be satisfactorily represented by the Bingham model.
This finding has profound implications for the industry and my main purpose is to
discuss and elucidate those implications.
However, workability and the factors that affect it are considered also in terms of the
tests that are already familiar, although the disadvantages of those methods are argued
strongly. Like my lectures, and like the earlier book, this one is intended for practising
engineers and concrete technologists, and I hope it will be seen as proposing procedures
that are eminently practical, although they may at first seem to be a little more
complicated than those at present in use. In fact, very little extra trouble is required and
any that is should be balanced against the benefits to be obtained in terms of a better
understanding of fresh concrete, and in increased hope of avoiding the difficulties and
disputes that are expensive in time and money.
There is very little mathematics in the book. I have not provided proofs of any
equations used but have tried to present reasonable arguments that I hope will appeal to
those who are engaged in getting the job done, rather than in carrying out interesting
investigations in the absence of pressure. I have also, on occasion, simplified the physics
arguments but without sacrificing anything that is of importance in practical application.
Any reader who feels dissatisfied about lack of rigour in any section is invited to refer to
the original papers where full arguments are given.
G.H.Tattersall
Download
http://s18.alxa.net/s18/srvs2/02/002...f.concrete.rar
Preface
This book is a logical follow-up of the monograph The Workability of Concrete which
was published in 1976, and which was inspired by a suggestion from the then Cement
and Concrete Association, as a result of lectures I gave for some twenty years on the
Advanced Concrete Technology Course held at the Association’s Training Centre at Fulmer
Grange. Since 1976 a great deal of work has been done in studies of workability
measurement and its applications, and it has been demonstrated beyond doubt that the
flow properties of fresh concrete can be satisfactorily represented by the Bingham model.
This finding has profound implications for the industry and my main purpose is to
discuss and elucidate those implications.
However, workability and the factors that affect it are considered also in terms of the
tests that are already familiar, although the disadvantages of those methods are argued
strongly. Like my lectures, and like the earlier book, this one is intended for practising
engineers and concrete technologists, and I hope it will be seen as proposing procedures
that are eminently practical, although they may at first seem to be a little more
complicated than those at present in use. In fact, very little extra trouble is required and
any that is should be balanced against the benefits to be obtained in terms of a better
understanding of fresh concrete, and in increased hope of avoiding the difficulties and
disputes that are expensive in time and money.
There is very little mathematics in the book. I have not provided proofs of any
equations used but have tried to present reasonable arguments that I hope will appeal to
those who are engaged in getting the job done, rather than in carrying out interesting
investigations in the absence of pressure. I have also, on occasion, simplified the physics
arguments but without sacrificing anything that is of importance in practical application.
Any reader who feels dissatisfied about lack of rigour in any section is invited to refer to
the original papers where full arguments are given.
G.H.Tattersall
Download
http://s18.alxa.net/s18/srvs2/02/002...f.concrete.rar