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Artykuły w czasopismach na temat „Concrete construction”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 29 lipca 2024

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1

Hubáček, Adam, and Rudolf Hela. "Concrete with High Content of Fly Ash Intended for Constructions with Long Durability." Solid State Phenomena 249 (April 2016): 21–27. http://dx.doi.org/10.4028/www.scientific.net/ssp.249.21.

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The article deals with theme of high fly ash content concretes intended for long life constructions. Considering the still growing consumption of fly ash in construction concretes it is a live theme in the Czech Republic and abroad as well. The emphasis will be laid namely on characteristics and requirements for fresh concrete intended for construction of these specific concrete constructions. They are for instance waterproof constructions, tunnel linings, concretes for bridge and road constructions etc. Also the hardened concrete properties like compressive strength, resistance to pressure wa

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Pani, Luisa, Lorena Francesconi, James Rombi, Fausto Mistretta, Mauro Sassu, and Flavio Stochino. "Effect of Parent Concrete on the Performance of Recycled Aggregate Concrete." Sustainability 12, no. 22 (November 12, 2020): 9399. http://dx.doi.org/10.3390/su12229399.

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Recycling concrete construction waste is a promising way towards sustainable construction. Indeed, replacing natural aggregates with recycled aggregates obtained from concrete waste lowers the environmental impact of concrete constructions and improves natural resource conservation. This paper reports on an experimental study on mechanical and durability properties of concretes casted with recycled aggregates obtained from two different parent concretes, belonging to two structural elements of the old Cagliari stadium. The effects of parent concretes on coarse recycled aggregates and on new st

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Kieslich, Hubertus, and Klaus Holschemacher. "Composite Constructions of Timber and High-Performance Concrete." Advanced Materials Research 133-134 (October 2010): 1171–76. http://dx.doi.org/10.4028/www.scientific.net/amr.133-134.1171.

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Currently Timber-Concrete Composite (TCC) Constructions are often applied for strengthening existing timber beam slabs. The load bearing capacity of the composite construction is primarily affected by the material properties of the timber beam and the concrete slab. But the type of bond between both parts is also of high importance. The concrete slab has to perform several tasks, not only in load carrying direction of the ceiling but also perpendicular to the direction of span or for stiffening the whole building. These tasks will be pointed out in this paper. Furthermore the working process (

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4

Kurpińska, Marzena, Beata Grzyl, and Adam Kristowski. "A Study on Fibre-Reinforced Concrete Elements Properties Based on the Case of Habitat Modules in the Underwater Sills." Polish Maritime Research 27, no. 1 (March 1, 2020): 143–51. http://dx.doi.org/10.2478/pomr-2020-0015.

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AbstractHydrotechnical constructions are mostly objects functioning in extreme conditions and requiring a custom-made construction project. In the case of using prefabricated elements, it is required to develop production, transport, assembly, conservation and repair technology. Concerning the problem of concrete cracks, modern repair systems allow positive effects to be achieved in many cases of concrete elements repair. In this work an attempt has been made to assess the properties of concrete, situated in the Baltic Sea environment, in which traditional rebar was partly replaced by disperse

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Koroleva, O. I., V. S. Orlov, and P. A. Shustov. "Improving concrete quality for transport construction." Journal «Izvestiya vuzov Investitsiyi Stroyitelstvo Nedvizhimost» 13, no. 3 (October 17, 2023): 492–500. http://dx.doi.org/10.21285/2227-2917-2023-3-492-500.

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The creation of a transport network with high performance characteristics of the roadbed is an urgent task in the field of road construction. Foreign practice in the construction and operation of such facilities indicates the need for research studies aimed at obtaining an optimal concrete stone structure by optimizing the concrete composition (controlling the concrete mixture properties at the microlevel) and using state-of-the-art complex additives. The technological properties of concrete mixture and concrete were studied in accordance with the requirements of the current regulatory documen

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Kazaryan, Ryben R., and Vitaly A. Khvan. "Technological Processes for Manufacturing Cellular Concrete Products for Construction." Materials Science Forum 931 (September 2018): 634–39. http://dx.doi.org/10.4028/www.scientific.net/msf.931.634.

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Cellular concrete occupies one of the leading places in world practice of a high-rise construction as the constructional heat-insulating material used in case of construction and reconstruction of buildings and constructions of different purpose. In this artificial stone construction material pores (air cells with diameter 0.1-3.0mm) are distributed rather regularly and occupy from 20 to 90% of amount of concrete, providing high heatphysical qualities (coefficient of heat conductivity of 0.07-0.2 W/ms) that allows cellular concrete houses to keep heat well. Excessive (reserve) porosity of cell

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7

Kastornykh, Lubov, Mikhail Kholodnyak, Igor Osipchuk, and Alexander Kaklyugin. "Modified Concrete Mixes for Monolithic Construction." Materials Science Forum 1043 (August 18, 2021): 81–91. http://dx.doi.org/10.4028/www.scientific.net/msf.1043.81.

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The effect of the multifunctional supplement Linamix PCX and mineral fillers of microsilica and expanded clay dust on the characteristics of concrete mixtures pumped by concrete pumps is investigated. The evaluation of highly mobile and self-compacting concrete mixtures’ properties was carried out according to pumpability criteria that simulate the elastic-viscous structured system flow. The physical and mechanical characteristics of the hardened concrete were determined using standard and generally accepted methods. The ability of the modified concrete to resist tensile stresses was determine

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Jain, Abhishek. "Polymer Concrete: Future of Construction Industry." International Journal of Scientific Research 2, no. 11 (June 1, 2012): 201–2. http://dx.doi.org/10.15373/22778179/nov2013/64.

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Mahmood, Hersh F., Hooshang Dabbagh, and Azad A. Mohammed. "Fresh, Mechanical, and Durability Properties of Concrete Contains Natural Material as an Admixture, an Overview." Journal of Studies in Science and Engineering 2, no. 3 (September 18, 2022): 66–86. http://dx.doi.org/10.53898/josse2022235.

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Nowadays, the performance criteria for concrete construction are moving toward eco-efficiency, which is a method of producing highly durable and environmentally friendly concrete while minimizing both manufacturing costs and environmental load. Admixtures are commonly used in all concrete construction; however, some of them are harmful to human health and cause leaching, which is responsible for environmental pollution. On this principle, one of the eco-efficiency method's techniques is to use natural materials as additives in concrete. The paper continues to discuss the experi-mental data gen

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10

Žiogas, Vigantas Antanas, Svajūnas Juočiūnas, and Giedrius Žiogas. "HYDROTECHNICAL CONCRETE WITH LOCAL AGGREGATES AND THEM USING FOR MONOLITHIC STRUCTURES." Engineering Structures and Technologies 1, no. 2 (June 30, 2009): 102–10. http://dx.doi.org/10.3846/skt.2009.13.

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The article discusses the technological peculiarities of construction monolithic hydrotechnical concrete structures, use of local aggregates for producing special concretes, methods of determining water impermeability of concretes as well as the evaluation of the methods mentioned above. The article presents the requirements for the granulometric composition of aggregate mixes for the production of flowing concrete mixes used for the construction of monolithic hydrotechnical structures. The possibilities and expediency of using local crushed gravel with increased amounts of weak particles for

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Kropidłowska, Oliwia. "Application of sawdust concrete in construction." Budownictwo i Architektura 21, no. 3 (October 31, 2022): 005–18. http://dx.doi.org/10.35784/bud-arch.2927.

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Sawdust concrete is a type of lightweight concrete in which some of the mineral aggregate is replaced by sawdust - a by-product of wood processing. It is not a new material, but its potential is not utilised to its full degree. Taking into account the most important advantages of sawdust concrete - lower density and greater thermal and acoustic insulation than ordinary concrete - it is worth to consider the possibilities of its usage in construction wider than currently . In order to present the properties of sawdust concrete, the review of contemporary technical literature has been performed.

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12

Hamzeh, Farook, Omar Abdul Ghani, Mohammad Bassel Saleh Bacha, and Yara Abbas. "Modular concrete construction." Engineering, Construction and Architectural Management 24, no. 6 (November 20, 2017): 935–49. http://dx.doi.org/10.1108/ecam-11-2014-0148.

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Purpose This study evaluates the enablers and barriers for modular concrete construction in Lebanon. The purpose of this paper is to investigate various factors (time, cost, technical know-how, organizational, sustainability, etc.) and their influence on the choice of the construction method. The paper examines the different assessments of designers, manufacturers, and contractors regarding precast construction in comparison to traditional in-situ methods, and highlights the major differences in their views. Design/methodology/approach Structured face-to-face surveys were conducted with top ma

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13

Lydon, Frank D. "Concrete construction handbook." Construction and Building Materials 8, no. 1 (January 1994): 73. http://dx.doi.org/10.1016/0950-0618(94)90013-2.

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Kharchenko, Alexey I., Igor Ya Kharchenko, Vyacheslav A. Alekseev, and Sofia I. Bazhenova. "Application of expanding cements for sprayed concrete in tunnel construction." Vestnik MGSU, no. 11 (November 2019): 1438–48. http://dx.doi.org/10.22227/1997-0935.2019.11.1438-1448.

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Introduction. The paper substantiates the actuality of the problem connected with obtaining efficient fine concretes possessing enhanced crack resistance, tightness, and duration for tunnel construction. This aim is pursued with the application of expansive cements (EC). Materials and methods. Various types of expansive agents were used in composition binders. Portland cement PTs 500 D0 was taken as the basic Portland cement. Studying hydration and structure formation processes during hardening of the ECs and EC-based concretes was executed utilizing a system of physicochemical methods.

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15

Wu, Li-Ming, Zi-Jian Wang, Yong-Zai Chang, Feng Gao, Bin Zhang, Yi Wu, and Han-Xiu Fan. "Vibration Performance of Steel Fiber Concrete Tunnel Lining by Adjacent Tunnel Blasting Construction." Applied Sciences 13, no. 7 (March 26, 2023): 4201. http://dx.doi.org/10.3390/app13074201.

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When constructing tunnels in mountainous areas, the drilling and blasting method is the most commonly used because of its economy. Ordinary reinforced concrete itself has defects such as poor crack resistance and brittleness. Therefore, when using the drilling and blasting method for ordinary reinforced concrete double-line tunnels, vibration phenomena will occur and cause cracks in the first-line tunnels, which will have adverse effects on the durability and safety of the tunnel. As a response, scholars have proposed the use of steel fiber-reinforced concrete as tunnel lining. In this paper,

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16

Tran, Vu An, Le Anh Tuan Bui, Duc-Cuong Nguyen, and Hoang Anh Nguyen. "Effect of fiber type on performance of fiber reinforced concrete applied for hydraulic construction." CTU Journal of Innovation and Sustainable Development 16, Special issue: ICCEE (May 9, 2024): 51–57. http://dx.doi.org/10.22144/ctujoisd.2024.281.

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This study aims at evaluating effect of fiber types on comprehensive property of a practical fiber reinforced concrete (FRC) applied for hydraulic construction. Three fiber types including polypropylene, glass, and steel fiber were used to replace concrete volume at 0.3 vol.%. Experimental results illustrated that when compared with the reference concrete, the fiber reinforced concretes with steel or glass fiber had comparable or slight changes on the fresh properties. But, addition of polypropylene fiber induced the fresh FRC with decreased slump flow and significantly increased air entrained

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17

Hoffmann Sampaio, Carlos, Bogdan G. Cazacliu, Weslei Monteiro Ambrós, Márcio André Kronbauer, Rejane MC Tubino, Denise CC Dal Molin, Josep Oliva, Gérson L. Miltzarek, Regis P. Waskow, and Viviane LG dos Santos. "Demolished concretes recycling by the use of pneumatic jigs." Waste Management & Research: The Journal for a Sustainable Circular Economy 38, no. 4 (February 12, 2020): 392–99. http://dx.doi.org/10.1177/0734242x20902835.

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Large quantities of construction and demolition waste is generated annually around the world. Part of this material is processed in recycling plants. After removing metals, fines and lights, the construction and demolition waste is crushed and sized and can be used as aggregates for low resistance concrete, for road sub-base, city landfill and other low value-added applications. For their use as coarse aggregate in structural concretes, construction and demolition waste must exhibit high densities and regularity of the material. This material usually is presented in demolished concretes. About

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18

Patil, Shrikant T., and Dr A. R. Kolhe. "Smart Dynamic Concrete-Rapid Economical Sustainable Construction." Journal of Advances and Scholarly Researches in Allied Education 15, no. 2 (April 1, 2018): 557–60. http://dx.doi.org/10.29070/15/56896.

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Sasaki, S., Y. Uno, S. Hashimoto, and S. Date. "Productivity Improvement of the Concrete Construction Work." International Journal of Engineering and Technology 8, no. 4 (April 2016): 254–59. http://dx.doi.org/10.7763/ijet.2016.v6.894.

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Sasaki, S., Y. Uno, S. Hashimoto, and S. Date. "Productivity Improvement of the Concrete Construction Work." International Journal of Engineering and Technology 8, no. 4 (April 2016): 254–59. http://dx.doi.org/10.7763/ijet.2016.v8.894.

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21

Wang, Gui Ling, Ming Lei Ma, Dong Mei Miao, and Hong Juan Ma. "Pump Ability of Concrete Mixture Improvement Based on Rich Mortar Theory Testing Method." Applied Mechanics and Materials 472 (January 2014): 704–7. http://dx.doi.org/10.4028/www.scientific.net/amm.472.704.

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Ready-mixed concrete has gained more and more popularity in the construction projects in China. Long distance or high dislocation pump of concrete mixture is difficult to control the concrete quality , even more worse, the concrete may become drier or stocked during the pumping. How to improve the concretes pump ability is a major concern of the construction company. With the development of civil engineering, the building get much more higher and the bridge get much more longer, the pump ability of concrete matters the final product quality of the structure. This article proposed a comprehensi

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Abdollahnejad, Zahra, Mohammad Mastali, Mahroo Falah, Tero Luukkonen, Mehran Mazari, and Mirja Illikainen. "Construction and Demolition Waste as Recycled Aggregates in Alkali-Activated Concretes." Materials 12, no. 23 (December 3, 2019): 4016. http://dx.doi.org/10.3390/ma12234016.

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The growth of global construction has contributed to an inevitable increase in the amount of construction and demolition (C&D) waste, and the recycling of C&D waste as aggregates in concrete is receiving increased interest, resulting in less demand for normal aggregates and bringing a potential solution for the landfilling of wastes. Recently, several studies have focused on the use of C&D waste in alkali-activated concrete to move one step closer to sustainable concretes. This paper focuses on the main mechanisms of using C&D waste in the resulting physical, mechanical, and du

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Azizan, M. A., N. Z. Noriman, N. Ishak, and H. Desa. "Application Of Hybrid Fibre Concrete As Advanced Material For Concrete Water Tank Construction." IOP Conference Series: Earth and Environmental Science 920, no. 1 (November 1, 2021): 012012. http://dx.doi.org/10.1088/1755-1315/920/1/012012.

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Abstract The challenge of construction and the complexity of civil engineering systems, especially in the construction of water tanks, are catching people’s attention around the world. Concrete, which is a priority feature and a mandatory used material, must have a very high strength and an acceptable degree of workability and properties. Efforts are being made in the field of concrete production to create and expand these mixtures of unusual characteristics and behaviors. The used of the hybrid fibre concrete in the concrete wall can reduce the costing factor in terms of constructions and mai

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Falliano, Devid, Salvatore Quattrocchi, Dario De Domenico, Giuseppe Ricciardi, and Ernesto Gugliandolo. "Critical assessment of CO2 emission of different concretes: foamed, lightweight aggregate, recycled and ordinary concrete." Acta Polytechnica CTU Proceedings 33 (March 3, 2022): 153–59. http://dx.doi.org/10.14311/app.2022.33.0153.

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Construction materials contribute to about 75% of the CO2 emission of all the construction processes. Concrete is one of the most widely used construction materials and is thus primarily responsible for CO2 emission. In particular, 8 − 9% of global greenhouse gas (GHG) emission are produced by concrete. CO2 emissions can be considerably reduced in the construction phase through a careful selection of materials with low environmental impact or through specific admixtures. In this study, different concretes are taken into consideration, including foamed concrete, lightweight aggregate concrete,

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Fiskov, Anton A., Igor A. Magola, Alexander A. Ditts, Natalia A. Mitina, and Sergey E. Vinokurov. "Impact of Temperature and Radiation Factors on Special Concretes Used for NPP Construction." Journal of Composites Science 7, no. 4 (April 3, 2023): 134. http://dx.doi.org/10.3390/jcs7040134.

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The core catcher is arranged in an unattended, unventilated sub-reactor space. It is designed to receive molten corium in emergencies, and thus the concrete used in the core catcher must be resistant to high temperatures without significant loss of strength. During nuclear power plant (NPP) operation, these concretes are subjected to considerable radiation exposure, which may also affect their physical–chemical properties. Concrete mixes based on Portland cement and alumina cement with iron and corundum aggregate were investigated. Model samples of concrete were subjected to temperature exposu

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Latinović, Luka, Aleksandar Banjac, and Nemanja Stojić. "The utilization of demolition waste in the manufacturing process of polymer concretes." Serbian Journal of Engineering Management 8, no. 2 (2023): 20–29. http://dx.doi.org/10.5937/sjem2302020l.

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The proportion of waste generated by demolition activities is substantial. Furthermore, there is a minuscule fraction of this waste that undergoes the process of recycling. With the exception of steel, the majority of materials, such as crushed concrete, are typically disposed of in wild landfills, a common problem in Serbia. Simultaneously, it is noteworthy that conventional concretes, extensively utilized in the construction sector, exhibit several shortcomings. The implementation of breakthrough technologies in the field of chemistry has the potential to significantly transform the approach

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USTABAŞ, İlker. "Use of Weight Maturity Method for Building Concretes Used in Artvin Yusufeli Dam Construction." Journal of Cement Based Composites 1, no. 1 (November 19, 2019): 1–5. http://dx.doi.org/10.36937/cebacom.2020.001.001.

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The aim of this study is to compare the compressive strength determined by weight maturity method in dam concretes with compressive strength obtained from fresh concrete and core samples. Within the scope of the study, normal concretes of C25/30 strength class were produced. Samples were taken from ø15x30 cm cylinder molds from normal concrete mixtures having maximum aggregate grain diameter (Dmax) of 25 mm.In this study, the estimated compressive strengths were measured by using a maturity device and the compressive strengths obtained from samples taken from fresh concrete and core samples ta

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Li, Qing Ning, Huang Huang, and Wei Shan Jiang. "Joint Construction of Assembled Integrally Floor." Advanced Materials Research 446-449 (January 2012): 775–79. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.775.

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This article expounds the floor ends and sides joint constructions of prestressed concrete floor and prestressed concrete hollow floor with added surface，as well as prestressed concrete hollow floor without added surface，and the comparation are available。Finally，some new construction methods are raised based on improving the seismic performance of integrally assembled prestressed concrete floor。

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García del Toro, Eva M., Daniel Alcala-Gonzalez, María Isabel Más-López, Sara García-Salgado, and Santiago Pindado. "Use of Ecofriendly Glass Powder Concrete in Construction of Wind Farms." Applied Sciences 11, no. 7 (March 29, 2021): 3050. http://dx.doi.org/10.3390/app11073050.

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Silicon is the main element in the composition of glass and it has been seen that it can be used as a partial replacement for cement in the manufacture of concrete. Different dosages of glass powder and cement were applied to manufacture the concrete mixes. Initially, the characteristics of fresh concrete were studied, such as consistency, air content, apparent density and workability. Secondly, compressive strength tests were performed on the different concrete mixtures produced. The consistency tests allowed us to classify these concretes within the group of fluids. The air content of these

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Gu, Chun Ping, Wei Sun, Li Ping Guo, and Qian Nan Wang. "Ultrahigh Performance Concrete: A Potential Material for Sustainable Marine Construction in View of the Service Life." Applied Mechanics and Materials 438-439 (October 2013): 108–12. http://dx.doi.org/10.4028/www.scientific.net/amm.438-439.108.

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Ultrahigh performance concretes (UHPC) are promising materials for the next generation infrastructures due to their superior mechanical properties and durability. In this paper, comparison studies were conducted to show the potential of UHPC for sustainable constructions in chloride environments in view of service life. For reinforced concrete, the service life was calculated with analytical solution of Ficks second law on diffusion. And for reinforced concrete with nonlinear initial chloride profiles and depth-dependent chloride diffusion coefficient, a numerical method based on the Crank-Nic

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Bazhenov, Yu M., S.-A. Yu Murtazaev, D. K.-S. Bataev, A. H. Alaskhanov, T. S. A. Murtazaeva, and M. S. Saydumov. "High-strength concretes based on anthropogenic raw materials for earthquake resistant high-rise construction." Engineering Solid Mechanics 9, no. 3 (2021): 335–46. http://dx.doi.org/10.5267/j.esm.2021.1.004.

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This work is devoted to development of optimum recipes of high-strength concretes based on filled binders with fine-milled anthropogenic mineral filler intended for earthquake resistant high-rise monolithic construction. The optimum recipes of concretes in this work have been developed on the basis of computations and experimental designing of cast concrete mixes with chemical additives and anthropogenic mineral fillers, as well as destructive inspection methods as the most precise for analysis of physicomechanical and deformation properties of concrete. The following raw materials have been u

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Pulyaev, I., and S. Pulyaev. "Experience of Using Self-Compacting Concrete Mixes in Transport Construction." Materials Science Forum 992 (May 2020): 135–42. http://dx.doi.org/10.4028/www.scientific.net/msf.992.135.

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The creation of self-compacting concrete (SCC) is associated with the introduction of plasticizing additives based on polycarboxylate esters (PCE). The first patent for a group of substances proposed for use as superplasticizers for concrete, was declared in the early 80-ies of the last century in Japan. In the mid 90-ies superplasticizers based on esters of polycarboxylates began to be used in Europe. In Russia, the use of self-compacting concrete began much later, and in bridge and tunnel construction almost a few years ago. Currently, in the European Union, 70-80% of reinforced concrete str

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Davidyuk, Artem, and Igor Rumyantsev. "Quality control of high-performance concrete in high-rise construction during operation." MATEC Web of Conferences 170 (2018): 01035. http://dx.doi.org/10.1051/matecconf/201817001035.

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With onset of the XXI century, the demand for construction of high-rise buildings with the load-bearing framework made of high-performance cast-in-situ concrete has increased many-fold in the construction sector. Specific features of the high-performance concrete of bearing structures in the situation of real operation of high-rise buildings are continuously studied by scientists and specialists all over the world, and regulatory and methodological documents are being complemented and adjusted. High-performance concretes and structures made of them possess some specific features that should be

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Bayat, Hydayatullah, Andrzej Ubysz, Marek Maj, Marek Chalecki, Jarosław Wójt та Ashot Tamrazyan. "Experimental Research of Ratio between Residual and Elastic Strains εres/εE in High-Strength Concrete Beams Subjected to Bending". Materials 14, № 20 (12 жовтня 2021): 6007. http://dx.doi.org/10.3390/ma14206007.

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In the mechanics of concrete constructions, one distinguishes between residual and elastic strains. Cyclic loadings evoke changes mainly in the elastic strains; however, the total strains are decided by the sum of the residual and elastic strains. The knowledge of the ratio between the residual and total strains allows to predict the total deformations of a construction assuming it is made from an ideally elastic material. This paper presents the effect of the load level at the values of the residual strains for beams made of high-strength concretes and subjected to bending. The investigations

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Pešta, Jan, Tereza Pavlů, Kristina Fořtová, and Vladimír Kočí. "Sustainable Masonry Made from Recycled Aggregates: LCA Case Study." Sustainability 12, no. 4 (February 20, 2020): 1581. http://dx.doi.org/10.3390/su12041581.

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For a sustainable building industry, reusable construction with a low demand for primary resources is needed. Moreover, if we want to reduce the amount of construction and demolition waste, construction with recycled aggregate should be considered. To investigate the environmental impacts of such concrete construction, life cycle assessment (LCA) was used to compare the following types of concrete construction: Reusable blocks with recycled brick aggregate, reusable blocks with recycled concrete, reusable blocks with natural aggregate, and regular concrete wall. Firstly, the properties of new

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Nesvetaev, G. V., Y. I. Koryanova, and D. P. Sukhin. "Some Technological Parameters of Construction Joints Formation Using the Self-Compacting Concrete Mixtures." Modern Trends in Construction, Urban and Territorial Planning 2, no. 3 (October 11, 2023): 31–39. http://dx.doi.org/10.23947/2949-1835-2023-2-3-31-39.

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Introduction. The important condition ensuring the monolithicity of the erected massive monolithic reinforced concrete structures, divided in compliance with the standards into the heat-shrinkable blocks, is the quality of construction joints in terms of the new-to-old concrete bonding. The research on the bonding strength dependence on the technological parameters of the construction joints formation using the widely spread in recent years self-compacting concretes is a relevant task, because the number of publications on the respective topic is insufficient. The aim of the present paper is t

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AL-KHAWAF, A. F. Q., and A. I. NIKULIN. "Analysis of Deformative-Strength Characteristics of Concretes, Manufactured with Addition of Coarse Aggregate, Obtained from Concrete Rubbles." Stroitel'nye Materialy 785, no. 10 (2020): 22–30. http://dx.doi.org/10.31659/0585-430x-2020-785-10-22-30.

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In the construction practice, various concretes are used which, depending on the purpose, meet different requirements in terms of reliability, resistance to external environmental factors and other equally important parameters. In this article, as a coarse aggregate, crushed stone obtained in the process of crushing concrete waste from fragments of destroyed buildings and structures is considered. The results of experimental studies by various scientists have shown that the use of concrete rubble as aggregate is a promising direction. Thus, the economic effect of the use of crushed concrete as

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Liu, Chenguang. "Expounding the Construction Technical Measures of Fair-Faced Concrete Construction." E3S Web of Conferences 53 (2018): 03078. http://dx.doi.org/10.1051/e3sconf/20185303078.

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Due to the acceleration of urbanization in China, construction technology in the construction field has also been continuously developed. The fair-faced concrete is often referred to as decorative concrete. It is a new type of concrete that has been continuously developed as people's demands for architectural decoration and it becomes more widely used in modern construction projects. In this paper, by introducing the types and composition of fair-faced concrete, a series of fair-faced concrete construction technical measures, as well as pouring and conservation measures, have been proposed in

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Varikuppala, Lalitha, and G. V. V. Satyanarayana. "Mix proportioning of M25 grade concrete by replacing normal aggregate with light weight aggregate (Pumice)." E3S Web of Conferences 391 (2023): 01197. http://dx.doi.org/10.1051/e3sconf/202339101197.

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Day to day a large development in construction activities are happening. All constructions require huge quantity of concrete. All we know that conventional concrete has density 2400 kg/m3.This type of concrete is not at all required in all aspects. So that new era concretes are developed to solve more problems. In general Components of buildings have concrete density 2400 kg/m3. In high rise buildings the components are large in size. Thus, by making the components lighter, a concrete needs to have a lesser density while still retaining its adequate compressive capacity. Lightweight aggregate

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Escobar, Ignacio. "The value of special concretes in tall buildings." Structural Engineer 94, no. 9 (September 1, 2016): 20–23. http://dx.doi.org/10.56330/tjgk1692.

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In recent years, a shortage of development space in many cities has led to a rise in the construction of tall buildings. This article looks at the role special concrete mixes – high-early-strength concrete and self-compacting concrete – have to play in the design and construction of medium-rise and tall buildings. Using research case studies, the article considers the potential savings in construction costs offered by the use of special concretes, as well as added value that may be realised through an increase in floor area.

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Medeiros-Junior, Ronaldo A., Carlos ET Balestra, and Maryangela G. Lima. "Applicability of recycled aggregates in concrete piles for soft soil improvement." Waste Management & Research: The Journal for a Sustainable Circular Economy 35, no. 1 (November 19, 2016): 56–64. http://dx.doi.org/10.1177/0734242x16676544.

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The expressive generation of construction and demolition waste is stimulating several studies for reusing this material. The improvement of soft soils by concrete compaction piles has been widely applied for 40 years in some Brazilian cities. This technique is used to improve the bearing capacity of soft soils, allowing executing shallow foundations instead of deep foundations. The compaction piles use a high volume of material. This article explored the possibility of using recycled aggregates from construction waste to replace the natural aggregates in order to improve the bearing capacity o

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Ťažký, Martin, and Klára Křížová. "Design of High-Strength Concrete for Ready-Mixed Concrete Production." Solid State Phenomena 325 (October 11, 2021): 113–18. http://dx.doi.org/10.4028/www.scientific.net/ssp.325.113.

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The high-strength concrete is a cement composite reaching high compressive strength, namely, pursuant to the legislation, higher than 60 MPa in the terms of cube compressive strength. The development of high-strength concretes exceeding 100 MPa is still an up-to-date issue and the production of these concretes is still limited only to a prefabrication. Contemporary construction industry and projecting activity have begun to focus on a construction of statically demanding buildings, which can include e.g. high-rise buildings. Such projecting often requires using of the state-of-the-art material

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Kazlitina, O. V., Karina Y. Martynova, Artem K. Golubinsky, and S. A. Kazlitin. "Development of the Compositional Binder for Cement-Concrete Used in Monolithic Construction." Materials Science Forum 974 (December 2019): 9–13. http://dx.doi.org/10.4028/www.scientific.net/msf.974.9.

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One of the urgent problems of modern concrete science is the use and improvement of high-quality concrete. The emergence of such concretes has opened a new era in construction. Their unique properties are: high strength and corrosion resistance, water resistance and frost resistance, adjustable deformability. High-quality concretes provide high guaranteed parameters of the operational reliability of buildings and structures under the conditions of complex environmental effects and loads, significantly reduce construction time and reduce investment risks. One of the promising materials that all

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Koper, Artur, Marcin Koper, and Wojciech Kubissa. "Determining Concrete Composition on Recycled Aggregates." Key Engineering Materials 677 (January 2016): 266–72. http://dx.doi.org/10.4028/www.scientific.net/kem.677.266.

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The problem of recycling of construction wastes is important and at the same time difficult to deal with. One of the possible ways of using the construction wastes coming from the demolition of concrete constructions is to re-use them in the production of construction concretes as recycled concrete aggregates RCA. Determining the concrete composition with the use of RCA demands conditioning its different from the natural aggregates NA physical and mechanical properties. In the procedure of projecting the concrete composition with three equations theory the assumption of consistency class of co

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Sun, Li Gong. "Pump Concrete Construction Technology." Applied Mechanics and Materials 229-231 (November 2012): 2518–21. http://dx.doi.org/10.4028/www.scientific.net/amm.229-231.2518.

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In recent years, pump concrete construction technology is widely put in use because the modern architecture trends to over- height, large- span, and over-load. In the basis of the railway engineering examples, the thesis elaborates the ratio design of high-strength pump concrete, construction technology and quality control with reference to projects of the same kind.

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Donaldson, Laruie. "Concrete revolutionises road construction." Materials Today 13, no. 11 (November 2010): 10. http://dx.doi.org/10.1016/s1369-7021(10)70195-4.

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Naik, Tarun R. "Sustainability of Concrete Construction." Practice Periodical on Structural Design and Construction 13, no. 2 (May 2008): 98–103. http://dx.doi.org/10.1061/(asce)1084-0680(2008)13:2(98).

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Khan, Muhammad Waseem, and Yousaf Ali. "Sustainable construction." Construction Innovation 20, no. 2 (January 2, 2020): 191–207. http://dx.doi.org/10.1108/ci-05-2019-0040.

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Purpose The change in climate and depletion of natural resources because of the harmful emissions from different materials becomes a main issue for the globe. Some of the developed and developing countries have focused on this issue and performed research to provide a solution. The purpose of this study is to identify the best types of concrete based on its impact on the environment and economy. Design/methodology/approach The life cycle assessment and life cycle cost analysis of six concrete mixtures that include construction and demolition wastes (CDW), marble sludge, rice husk and bagasse a

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Yu, Ran Gang, and Xin Hu Wang. "Admixtures in Concrete Crack Control and Construction Technology Optimization." Advanced Materials Research 163-167 (December 2010): 1115–20. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.1115.

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This paper studies properties of concrete under the action of water-reducing retarder and expansive agent; gives the optimal design calculation method of cooling water pipe in the construction technology: mainly considering pipe’s diameter, distance, cooling water’s flow, temperature, time etc; studies the optimization to the concretes construction method. Midas/Civil, one finite element analysis soft-ware, analyses mass concrete construction of the whole process of the temperature field and stress field in the numerical simulation, considering the admixtures and construction technology. The r

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Thajeel, Marwah M., and György L. Balázs. "3D printing for earth construction - review." Concrete Structures 23 (2022): 64–67. http://dx.doi.org/10.32970/cs.2022.1.10.

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Concrete is the second frequently used material in our planet. Being the most consumed construction material for infrastructures and buildings, the demand for concrete is very high at present and expected to have the same significance in the future. On the other hand, conventional concrete could not be considered as an environmentally friendly construction material. This comes from the perspectives of reducing natural resources, high energy consumption, and produce a huge amounts of construction waste. 3D printing construction with earth materials provide the potential solutions to reshape the

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