A STUDY OF COAST PROTECTION CONSTRUCTIONS BUILT WITH THE USE OF RECYCLED CONSTRUCTION MATERIALS AND THEIR NEGATIVE IMPACT

Different types of materials are used in hydraulic structures and coast protection constructions. These materials can be of natural (e.g. stone) and artificial origin (concrete, metal). The main trends typical for building construction now are as follows: cutting a share of natural materials and reusing waste products of dismantling construction objects. As a result of recycling it is possible to produce building materials that look like and have properties characteristic of natural stone materials, gravel, in particular. While gravel is being processed, it is possible to predict that it would obtain such characteristics as grade, frost resistance and strength. Reuse of recycled construction materials is a challenge, because this type of waste can hardly be reduced in volume and requires considerable space for burial. We propose to use gravel produced by processing in hydraulic engineering objects, i.e. in coast protection constructions. For that, we analyzed waste materials characteristics to justify their use in hydraulic structures. The research proved that strength of gravel produced by processing was sufficient enough. On the other hand, its frost resistance and fineness did not satisfy the requirements to materials used in coast protective structures. Besides, the construction of such structures causes water pollution as inert materials placed in waterbodies increase water turbidity. As a large part of the structure is located directly in the waterbody, during the period of the construction inert materials are supposed to be dumped. In this period the water body is filled with a significant amount of fine particles, which leads to an increase in turbidity at the construction site. Thus, we come to the conclusion that it is possible to reuse recycled construction materials in hydraulic engineering structures only on condition of their additional after-treatment processing. We offer to mix gravel produced by processing with cement mortal. As a result we obtain no-fines concrete, which is further processed by hot procedure (with bituminous materials). No-fines concrete can be produced in the form of precast units of 1,4×1,4×0,5 m. The use of prefabricated units will allow to avoid waterbody pollution and protect it from fine particles. Further processing by bituminous materials will enhance its frost resistance and reliability, which in turn will prevent contamination of the water body in the period of coast protection constructions usage.

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Technical characteristics of the design of welded hydraulic-engineering structures and equipment

Power Technology and Engineering ◽

10.1007/s10749-007-0018-z ◽

2007 ◽

Vol 41 (2) ◽

pp. 81-85

Author(s):

V. N. Panin

Keyword(s):

Hydraulic Engineering ◽

Engineering Structures

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Effect of Alite Content in Sulphate-Resistant Cement on Heat Release in Massive Hydraulic Engineering Structures

Concrete Durability and Service Life Planning - RILEM Bookseries ◽

10.1007/978-3-030-43332-1_27 ◽

2020 ◽

pp. 137-140

Author(s):

V. R. Falikman ◽

K. B. Safarov ◽

V. F. Stepanova

Keyword(s):

Heat Release ◽

Hydraulic Engineering ◽

Engineering Structures

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Microstructural Analysis of Changes in the Morphology of Quartz Raw Materials of Different Genesis at Dry Milling

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1017.91 ◽

2021 ◽

Vol 1017 ◽

pp. 91-100

Author(s):

Ekaterina V. Fomina ◽

Natalia I. Kozhukhova ◽

Evgeny A. Belovodsky ◽

V.A. Klimenko ◽

Marina I. Kozhukhova

Keyword(s):

Materials Science ◽

Fine Particles ◽

Raw Materials ◽

Microstructural Analysis ◽

Construction Materials ◽

Degree Of Crystallinity ◽

Energy Potential ◽

Natural Quartz ◽

Defective Structure ◽

Dry Grinding

The influence of the genesis of quartz-containing rocks on the strength of particles and changes in morphology during destruction from the standpoint of the mineralogical approach in the development of the scientific direction "geonics" ("geomimetics") has been investigated. The kinetics of dry grinding of raw materials in a laboratory ball roller mill was carried out. The features of the formation and development of cracks, particle size distribution, changes in the morphology and microstructure of fragments have been studied. It was found that in natural quartz cracks develop along the surface, where the highest concentration of impurities creates a defect structure with destruction into small particles. The purest structure of hydrothermal quartz is susceptible to brittle fracture into fragments similar in morphology to the base particle. Reducing the defectiveness of the structure increases the strength of the crystals. The internal energy potential of techno genic raw materials is determined by its defective structure, which undergoes the greatest deformations during grinding, allowing obtaining the maximum values of the specific surface area and reduce the grinding time. A difference in the degree of crystallinity of quartz, which composes the polymineral techno genic raw materials, makes it possible to obtain the optimal granulometry of fine particles. The conducted research is aimed at identifying the mechanisms of destruction of quartz rocks and can be used in solving engineering problems not only in construction materials science, but also in geotechnics.

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Deformation characteristics of rock foundations of hydraulic engineering structures

Hydrotechnical Construction ◽

10.1007/bf02396687 ◽

1969 ◽

Vol 3 (12) ◽

pp. 1128-1132

Author(s):

S. A. Roza

Keyword(s):

Hydraulic Engineering ◽

Deformation Characteristics ◽

Engineering Structures ◽

Rock Foundations

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A test method to assess the frost resistance of concrete at the waterline of hydraulic structures

Materials and Structures ◽

10.1617/s11527-014-0327-2 ◽

2014 ◽

Vol 48 (8) ◽

pp. 2403-2415 ◽

Cited By ~ 6

Author(s):

Martin Rosenqvist ◽

Mikael Oxfall ◽

Katja Fridh ◽

Manouchehr Hassanzadeh

Keyword(s):

Frost Resistance ◽

Test Method ◽

Hydraulic Structures

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Production of Sustainable Construction Materials Using Agro-Wastes

Materials ◽

10.3390/ma13020262 ◽

2020 ◽

Vol 13 (2) ◽

pp. 262 ◽

Cited By ~ 7

Author(s):

Chrysanthos Maraveas

Keyword(s):

Construction Materials ◽

Sustainable Construction ◽

Waste Products ◽

Modern Times ◽

Bamboo Leaves ◽

Long Run ◽

Wide Scale ◽

Sugarcane Bagasse Ash ◽

Alternative Approaches ◽

Building Standards

The construction sector, in modern times, is faced by a myriad of challenges primarily due to the increase in the urban population and dwindling natural resources that facilitate the production of construction materials. Furthermore, higher awareness on climate change is forcing companies to rethink their strategies in developing more sustainable construction materials. Diverse types of agro-waste ranging from rice husk ash (RHA), sugarcane bagasse ash (SCBA), and bamboo leaves ash (BLA) among others have been identified as potent solutions in the development of sustainable construction materials. In this review paper, six different construction materials, made using agro-waste products, are examined. The materials include brick/masonry elements, green concrete, insulation materials for buildings, reinforcement materials for buildings, particleboards, and bio-based plastics. The main criterion adopted in selecting the materials regards their popularity and wide-scale use in modern construction applications. Additionally, as this research emphasizes identifying alternative approaches to develop sustainable construction materials, the focus is directed toward mainstream materials whose continued use has an adverse impact on the environment. The findings obtained from the review showed that the use of agro-waste to develop sustainable construction materials was effective, as the developed materials adhered to established building standards. Therefore, this indicates that agro-waste materials have the potential to replace conventional construction materials and hence achieve economic, environmental, and social sustainability in the long run.

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An Experimental Investigation on the Structural Behavior of FRP-Concrete Composite Compression Members

Materials Science Forum ◽

10.4028/www.scientific.net/msf.654-656.2644 ◽

2010 ◽

Vol 654-656 ◽

pp. 2644-2647 ◽

Cited By ~ 1

Author(s):

Joon Seok Park ◽

In Kyu Kang ◽

Jong Hwa Park ◽

Joo Kyung Park ◽

Hong Taek Kim ◽

...

Keyword(s):

Civil Engineering ◽

Construction Material ◽

Construction Materials ◽

Fiber Reinforced ◽

Engineering Structures ◽

Specific Strength ◽

Composite Pile ◽

New Construction ◽

Frp Tube ◽

Superior Corrosion Resistance

In construction industries, new construction materials are needed to overcome some problems associated with the use of conventional construction materials due to the change of environmental and social requirements. Accordingly, the requirements to be satisfied in the design of civil engineering structures are diversified. As a new construction material in the civil engineering industries, fiber reinforced polymeric plastic (FRP) has a superior corrosion resistance, high specific strength/stiffness, etc. Therefore, such properties can be used to mitigate the problems associated with the use of conventional construction materials. Nowadays, new types of bridge piers and marine piles are being studied for new construction. They are made of concrete filled fiber reinforced polymeric plastic tubes (CFFT). In this paper, a new type of FRP-concrete composite pile which is composed of reinforced concrete filled FRP tube (RCFFT) is proposed to improve compressive strength as well as flexural strength of an RCFFT. The load carrying capacity of proposed RCFFT is discussed based on the result of experimental and analytical investigations.

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Engineering design. Reinforced concrete and stone structures

10.12737/textbook_5cf772d9aa41e1.64804474 ◽

2019 ◽

Author(s):

Татьяна Ксенофонтова ◽

Tatiana Ksenofontova ◽

Марина Чумичева ◽

Marina Chumicheva

Keyword(s):

Reinforced Concrete ◽

Physical And Mechanical Properties ◽

Retaining Walls ◽

Educational Process ◽

Engineering Structures ◽

Normative Documents ◽

Stone Materials ◽

Long Term Experience ◽

Stone Structures

The textbook outlines the basics of calculation and design of reinforced concrete and stone structures in accordance with published normative documents SP 63.13330.2012 "Concrete and reinforced concrete structures. Basic provisions "and SP 15.13330.2012" Stone and armokamennye design". It considers the physical and mechanical properties of concrete, rebar, stone materials, reflects the modern classes of reinforcement used in construction, their characteristics and range. Much attention is paid to the calculation and design of water facilities, as well as environmental structures and structures in contact with the soil, such as retaining walls, underground concrete tanks for drinking water, reinforced concrete pipelines. The textbook reflects the long-term experience of teaching the authors of the discipline " Engineering structures "section" reinforced Concrete and stone structures". With this in mind, it provides many illustrations and explanations, and there are examples of calculation in the annexes. The textbook is written in accordance with the requirements of GEF VPO three plus and can be recommended for use in the educational process for the preparation of bachelors in areas 08.03.01 — "Construction", 20.03.02 — "environmental management and water use", 20.03.01 — "Technosphere safety" profile "environmental Engineering".

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