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Concrete and reinforced concrete remain the main building materials
for construction of modern fortifications. The book presents
experimental and theoretical results allowing production of special
high-strength rapid hardening concrete and fiber reinforced
concrete. It describes a method for effective proportioning of
high-strength fast-setting concrete and fiber reinforced concrete
with high dynamic strength as well as selecting proper
technological parameters, methodology for design of reinforced
concrete structures using such concrete. Particular attention is
paid to ensuring the early strengthening of concrete within 24
hours after casting and to constructing structures with limited
energy resources at the site.
The book deals with modern theoretical concepts related to the
impact of fly ash and metakaolin admixtures on structure formation
processes of concrete. Results of the effect of fly ash, metakaolin
and their composition on properties of self-compacting and
self-leveling concrete are presented. Based on mathematical models,
obtained using mathematical experiments planning methodology, the
impact of the main factors and their combination on workability,
strength and other properties that determine efficiency and
durability of concrete are analyzed. Using calculated dependencies,
a methodology for designing optimal compositions of concrete
containing active mineral admixtures and superplasticizers is
proposed. Features of industrial production of concrete for the
proposed compositions are discussed. The book is intended for
specialists working in the production of concrete and reinforced
concrete products and elements. It can also be used by construction
engineers to design compositions of cost-effective self-compacting
and self-leveling concrete as well as to determine the rational
direction of using technogenic raw materials like ash and
metakaolin.
The monograph analyses the state of the art (problem) in using
stone siftings and aspiration dust obtained in natural stone
crushing for producing concrete aggregates and fillers for dry
construction mixtures and mortars on their basis. The influence of
disperse fraction in stone siftings and aspiration dust on
structural, mechanical and rheological properties of cement
composite construction materials is investigated. Hypothesis for
obtaining technological conditions, providing positive effect of
the disperse fraction on strength and other properties of cement
based concrete and mortar is proposed. Experimental results on
studying properties of dry mixtures and mortars on their basis
using stone crushing aspiration dust as filler are presented.
Efficiency of using fillers, based on igneous rocks, on adhesive
and other properties of mortars is demonstrated. Methodology for
design of mortars composition for given mortar properties in case,
when aspiration dust is used as filler, is proposed. The monograph
presents experimental results on fine-grained concrete including as
a main filler stone siftings with up to 20% of disperse fraction.
It is shown that it is possible to produce fine grain concrete
class 20/25... 60/75. Technological parameters of vibro-pressed
fine-grained concrete with raw stone siftings are developed.
Methodologies for composition design of fine-grained concrete with
given workability are proposed. Possibility for producing
macroporous light-weight concrete for walls and filtration
materials, based on stone siftings fillers is shown.
The use of concrete and mortar containing coal fly ash, blast
furnace slag, and other dispersed technogenic materials is one of
the major areas of potential resource savings and improving the
environmental efficiency and sustainability of construction.
Improving Concrete and Mortar using Modified Ash and Slag Cements
presents the results of a study of high-tech concrete on composite
Portland cement and slag Portland cement. It explains the
possibility of significantly improving the properties of cements
and concrete with the introduction of superplasticizers and
hardening activators. Features: Describes how additives can reduce
costs and lead to more environmentally sustainable production
Explains the possibility of obtaining high-tech concrete with a
high content of ash, slag, and clinker kiln dust Presents the
possibility of significant reductions of the most energy-intensive
component of cements Examines the calculated dependences for
predicting the technical properties of concrete saturated with
dispersed technogenic products Explains the methods of calculating
the composition of concrete with specified properties of
low-clinker cements Suitable for civil and structural engineers as
well as for specialists working in the field of concrete
technology, students of civil engineering, and researchers of new
construction technologies, this book allows readers to understand
new and sustainable ways to improve the properties of concrete and
mortar by utilizing additives.
The monograph analyses the state of the art (problem) in using
stone siftings and aspiration dust obtained in natural stone
crushing for producing concrete aggregates and fillers for dry
construction mixtures and mortars on their basis. The influence of
disperse fraction in stone siftings and aspiration dust on
structural, mechanical and rheological properties of cement
composite construction materials is investigated. Hypothesis for
obtaining technological conditions, providing positive effect of
the disperse fraction on strength and other properties of cement
based concrete and mortar is proposed. Experimental results on
studying properties of dry mixtures and mortars on their basis
using stone crushing aspiration dust as filler are presented.
Efficiency of using fillers, based on igneous rocks, on adhesive
and other properties of mortars is demonstrated. Methodology for
design of mortars composition for given mortar properties in case,
when aspiration dust is used as filler, is proposed. The monograph
presents experimental results on fine-grained concrete including as
a main filler stone siftings with up to 20% of disperse fraction.
It is shown that it is possible to produce fine grain concrete
class 20/25... 60/75. Technological parameters of vibro-pressed
fine-grained concrete with raw stone siftings are developed.
Methodologies for composition design of fine-grained concrete with
given workability are proposed. Possibility for producing
macroporous light-weight concrete for walls and filtration
materials, based on stone siftings fillers is shown.
Concrete remains a dominant constructive material in the 21
century. Long-term experience of concrete application in all
construction areas shows that its main efficiency and reliability
condition is conformity of the material quality characteristics to
its performance in structures and elements. This book explores the
results of experimental and theoretical investigations carried out
by the authors to develop the main theoretical concepts in the
multi-parametric design of cement concrete compositions. A complex
of design dependencies is proposed for predicting properties of
concrete mixtures and hardened concrete, considering additional
technological factors. Algorithms for different types of concrete
compositions' design are presented as are examples of these
algorithms for specific industrial conditions. This book can be
used by researchers and engineers, specialised in the field of
concrete technology, as well as by graduate and undergraduate
students.
The modern building materials science, along with the
constructional characteristics of materials, includes the
theoretical concepts, allowing to predict properties of materials
and to operate them actively. The theoretical concepts of
construction materials science are based on the complex of the
physical and chemical, geological-mineralogical and other sciences
studying a structure and properties of material objects.
Construction materials science is inseparably connected with
technology of materials and products, methodology of their quality
indicators and testing. This book discusses how scientific and
technical progress actively affects the development of construction
materials science.
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