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Journal articles on the topic 'Lightweight concrete'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Zach, J., J. Bubeník, and M. Sedlmajer. "Development of lightweight structural concrete with the use of aggregates based on foam glass." IOP Conference Series: Materials Science and Engineering 1205, no. 1 (2021): 012014. http://dx.doi.org/10.1088/1757-899x/1205/1/012014.

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Abstract Lightweight concretes are increasingly being used in the construction industry, either for the overall lightweighting of the structure itself, reducing material consumption for construction and thus CO2 emissions, or for specific reasons such as improving the thermal insulation properties of the structure or acoustic properties. Today, lightweight concretes with lightweight expanded aggregates (expanded clay, agloporite) are most commonly used. This paper deals with the production of lightweight concretes lightweighted with foamed glass-based aggregates. Foamed glass is a lightweight

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Křížová, Klára, Jan Bubeník, and Martin Sedlmajer. "Use of Lightweight Sintered Fly Ash Aggregates in Concrete at High Temperatures." Buildings 12, no. 12 (2022): 2090. http://dx.doi.org/10.3390/buildings12122090.

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This study addresses the issue of the resistance to high temperatures of lightweight concrete lightweighted with sintered fly ash aggregate. Lightweight concretes with different amounts of lightweighting and their properties after loading temperatures of 600, 800 and 1000 °C were investigated. In particular, the effect of high temperature on the mechanical properties of the concrete was determined on the test specimens, and the effect on the microstructure was investigated by X-ray diffraction analysis and scanning electron microscopy. It was found that there is an increase in compressive stre

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Paskachev, A. B., T. G. Rzhevskaya, S. A. Stel'makh, E. M. Shcherban, L. D. Mailyan, and A. L. Mailyan. "Comparison of the effectiveness of microsilica modification of lightweight concretes with coarse aggregates from various rocks." Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost 14, no. 1 (2024): 82–95. http://dx.doi.org/10.21285/2227-2917-2024-1-82-95.

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A promising line of research in construction science and practice is the creation of lightweight concretes. They exhibit the so-called strength-density ratio, i. e. a relative characteristic between the strength and weight of the resulting concrete. This ratio simultaneously reflects the maximum possible weight reduction of the structure and its operational reliability. The research aims to compare the effectiveness of microsilica modification of lightweight concretes produced with coarse aggregates from various rocks. The study analyzed the existing scientific literature on lightweight concre

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Upasiri, Irindu, Chaminda Konthesingha, Anura Nanayakkara, Keerthan Poologanathan, Brabha Nagaratnam, and Gatheeshgar Perampalam. "Evaluation of fire performance of lightweight concrete wall panels using finite element analysis." Journal of Structural Fire Engineering 12, no. 3 (2021): 328–62. http://dx.doi.org/10.1108/jsfe-10-2020-0030.

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Purpose In this study, the insulation fire ratings of lightweight foamed concrete, autoclaved aerated concrete and lightweight aggregate concrete were investigated using finite element modelling. Design/methodology/approach Lightweight aggregate concrete containing various aggregate types, i.e. expanded slag, pumice, expanded clay and expanded shale were studied under standard fire and hydro–carbon fire situations using validated finite element models. Results were used to derive empirical equations for determining the insulation fire ratings of lightweight concrete wall panels. Findings It wa

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Sedlmajer, Martin, Jiří Zach, and Jan Bubeník. "USING SECONDARY RAW MATERIALS IN LIGHTWEIGHT OPEN-STRUCTURE CONCRETE WITH GOOD UTILITY PROPERTIES." Acta Polytechnica CTU Proceedings 22 (July 25, 2019): 94–98. http://dx.doi.org/10.14311/app.2019.22.0094.

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The paper presents the results of research in lightweight concrete with open structure made using a lightweight porous foam-glass aggregate produced from recycled glass powder. The goal was to develop lightweight concrete. In order to achieve the best possible properties while reducing binder content, the concrete was reinforced with by-product fibres, which helped reduce the weight of the concrete while delivering satisfactory mechanical properties. In the paper are proposed lightweight concrete with open structure made using foam-glass aggregate. Mechanical, thermal-insulating and acoustic p

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Thienel, Karl-Christian, Timo Haller, and Nancy Beuntner. "Lightweight Concrete—From Basics to Innovations." Materials 13, no. 5 (2020): 1120. http://dx.doi.org/10.3390/ma13051120.

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Lightweight concrete has a history of more than two-thousand years and its technical development is still proceeding. This review starts with a retrospective that gives an idea of the wide range of applications covered by lightweight concrete during the last century. Although lightweight concrete is well known and has proven its technical potential in a wide range of applications over the past decades, there are still hesitations and uncertainties in practice. For that reason, lightweight aggregate properties and the various types of lightweight concrete are discussed in detail with a special

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Wongkvanklom, Athika, Patcharapol Posi, Banlang Khotsopha, et al. "Structural Lightweight Concrete Containing Recycled Lightweight Concrete Aggregate." KSCE Journal of Civil Engineering 22, no. 8 (2017): 3077–84. http://dx.doi.org/10.1007/s12205-017-0612-z.

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Raupov, Ch.S. Malikov G.B. Zokirov J.J. "FOREIGN EXPERIENCE IN THE USE OF HIGH-STRENGTH EXPANDED CLAY CONCRETE IN BRIDGE CONSTRUCTION (LITERATURE REVIEW)." EURASIAN JOURNAL OF ACADEMIC RESEARCH 2, no. 10 (2022): 125–40. https://doi.org/10.5281/zenodo.7119543.

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The paper presents foreign experience in the use of high–strength expanded clay concrete in bridge structures, sets the average density ranges according to the European standard EN 206-1 for structural lightweight concrete, world experience in the development of lightweight concretes with increased strength and prospects for the development of high-strength lightweight concrete, the benefits of using lightweight concrete in bridge construction, a tendency to increase the proportion of structural lightweight concrete with a strength of 45 - 70 MPa in bridge construction. Based on the anal

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Szafraniec, Małgorzata, and Danuta Barnat-Hunek. "Evaluation of the contact angle and wettability of hydrophobised lightweight concrete with sawdust." Budownictwo i Architektura 19, no. 2 (2020): 019–32. http://dx.doi.org/10.35784/bud-arch.1644.

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The aim of the research presented in the paper was to evaluate the feasibility of using hydrophobic preparations based on organosilicon compounds for protection treatment on the lightweight concrete modified with sawdust. The experimental part of the work concerns the physical and mechanical properties of lightweight concrete and the influence of two hydrophobic agents on the contact angle of the material. Lightweight concrete contact angle (θw) was determined as a time function using one measuring liquid. Water repellent coatings in lightweight concrete structure with the coarse aggregate saw

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Barnat-Hunek, Danuta, Piotr Smarzewski, Grzegorz Łagód, and Zbigniew Suchorab. "Evaluation of the Contact Angle of Hydrophobised Lightweight-Aggregate Concrete with Sewage Sludge." Ecological Chemistry and Engineering S 22, no. 4 (2015): 625–35. http://dx.doi.org/10.1515/eces-2015-0037.

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Abstract The aim of the research presented in the paper was to evaluate the feasibility of using hydrophobic preparations based on organosilicon compounds for protection treatment of lightweight aggregates modified with municipal sewage sludge. Issues related to the wettability of the surface layer of hydrophobised lightweight-aggregate concrete supplemented with sewage sludge are discussed in the paper. The experimental part of the study is focused on the physical and mechanical characteristics of lightweight-aggregate concrete and the effect of two hydrophobic preparations on the contact ang

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Kadlec, Jaroslav, Ivailo Terzijski, František Girgle, and Lukáš Zvolánek. "Effect of Lightweight Concrete Density on Bond Strength." Advanced Materials Research 1106 (June 2015): 33–36. http://dx.doi.org/10.4028/www.scientific.net/amr.1106.33.

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The main objective of this paper is connected with the search of an optimal anchorage length of reinforcement in lightweight and ultra-lightweight concretes. Experimentally obtained values of the bond stress between lightweight concrete and reinforcing bars are presented. The density classes of lightweight concrete were D1,0, D1,2 and D1,4. The results are compared with equal ones of normal density concrete. The tests with ordinary reinforcement and with non-metallic hybrid reinforcement C-GFPR (30% portion of carbon fibres) were conducted.

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Chernil'nik, A., V. Smachney, D. El'shaeva, Y. Zherebtsov, and N. Dotsenko. "INFLUENCE OF THE TYPE OF FIBERS USED ON THE STRENGTH AND DEFORMATION OF DISPERSED-REINFORCED LIGHTWEIGHT CONCRETE." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 7, no. 2 (2022): 20–29. http://dx.doi.org/10.34031/2071-7318-2021-7-2-20-29.

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Fiber-reinforced concretes with improved strength and deformation characteristics are widely used in construction. The research is aimed to study the stress-strain condition of lightweight fiber-reinforced concrete, to plot stress-strain diagrams and analyze them. In total, four series of prism specimens are manufactured and tested. The first series is the control composition of lightweight concrete; the second series is lightweight concrete with a basalt fiber content of 3%; the third series is lightweight concrete with a glass fiber content of 3 %; the fourth series is lightweight concrete w

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Resende, Douglas Mol, José Maria Franco de Carvalho, Bárbara Oliveira Paiva, Gustavo dos Reis Gonçalves, Lais Cristina Barbosa Costa, and Ricardo André Fiorotti Peixoto. "Sustainable Structural Lightweight Concrete with Recycled Polyethylene Terephthalate Waste Aggregate." Buildings 14, no. 3 (2024): 609. http://dx.doi.org/10.3390/buildings14030609.

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Plastic is a widely consumed material with a high decomposition time, occupying significant space in landfills and dumps. Thus, strategies to reuse plastic waste are imperative for environmental benefit. Plastic waste is a promising eco-friendly building material for cement-based composites due to its reduced specific gravity and thermal conductivity. However, this waste reduces the composites’ mechanical strength. This work aims to produce and evaluate lightweight concretes made with only lightweight aggregates and mostly recycled plastic aggregates. Initially, an optimized dosage approach fo

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Khoshvatan, Mehdi, and Majid Pouraminia. "The Effects of Additives to Lightweight Aggregate on the Mechanical Properties of Structural Lightweight Aggregate Concrete." Civil and Environmental Engineering Reports 31, no. 1 (2021): 139–60. http://dx.doi.org/10.2478/ceer-2021-0010.

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Abstract In the paper, the effects of different percentages of additives (perlite, LECA, pumice) on the mechanical properties of structural lightweight aggregate concrete were tested and evaluated. For the research, 14 mixing designs with different amounts of aggregate, water, and cement were made. Experimental results showed that the specific gravity of lightweight structural concrete made from a mixture of LECA, pumice, and perlite aggregates could be 25-30% lighter than conventional concrete. Lightweight structural concrete with a standard specific gravity can be achieved by using a combina

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Inozemtcev, Alexandr Sergeevich, and Evgeniy Valerjevich Korolev. "Technical and Economical Efficiency for Application of Nanomodified High-Strength Lightweight Concretes." Advanced Materials Research 1040 (September 2014): 176–82. http://dx.doi.org/10.4028/www.scientific.net/amr.1040.176.

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The development of construction technologies is impossible without the proper estimation of economical efficiency. Some results of technical and economical efficiency of the developed high-strength structural lightweight concretes are presented in the article. Overview concerning world practice of research and application of lightweight concrete composition are made. The main properties and advantages of developed energy efficient high-strength lightweight concretes are described. The method of calculation of economic efficiency of concrete by means of reduction of total construction weight an

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Jose, Christin, Ganga Radhakrishnan, Abhinav Anandan, Althaf T A, and Sankar B. "Review of Mechanical, Durability, and Thermal properties of Light weight concrete containing cenosphere." E3S Web of Conferences 529 (2024): 01032. http://dx.doi.org/10.1051/e3sconf/202452901032.

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Compared to conventional concrete, lightweight concrete offers a reduced unit weight, making it easier to handle and transport. Its popularity has surged globally in numerous countries and has proven beneficial for construction purposes. Lightweight concrete often exhibits better thermal insulation properties compared to traditional concrete, contributing to energy efficiency in buildings. Recently, the inclusion of cenospheres in lightweight aggregates is being is heavily researched around the world. Ceneosphere addition increases the volume of the concrete mixture because of their smaller si

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Bideci, Alper, Özlem Sallı Bideci, Sabit Oymael, and Hasan Yıldırım. "Analysis of shrinkage and creep behaviors in polymer-coated lightweight concretes." Science and Engineering of Composite Materials 23, no. 1 (2016): 77–83. http://dx.doi.org/10.1515/secm-2014-0028.

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AbstractThe creep and shrinkage properties of polymer-coated lightweight concretes were examined. Five-hundred-dose lightweight concretes were produced by coating pumice aggregates with three different polymers (Sonomeric1: SNMC, KB Pur 214: KBP, and Polipol3455: PLP). The 3-, 7-, and 28-day compressive strength values of the obtained lightweight concrete samples were determined, and the 840-h and 12-month creep and shrinkage deformations were measured. It was found that the ductility of the SNMC- and KBP-coated concrete samples increased, while their shrinkage deformation results decreased wh

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Ibrahim, Rahel Khalid. "The Effect of Elevated Temperature on the Lightweight Aggregate Concrete." Kurdistan Journal of Applied Research 2, no. 3 (2017): 193–96. http://dx.doi.org/10.24017/science.2017.3.38.

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The use of lightweight concrete has become widely spread in concrete structures in the last years. Fire can be considered as a destructive hazard that attack concrete structures. In this research the effect of elevated temperature on lightweight aggregate concretes is studied. For this purpose, 81 cube shaped specimens were prepared from three different lightweight aggregate concrete mixes. After moist curing periods for 3, 7 and28 days, the specimens were subjected to ambient and elevated temperatures of 450⁰C and 650⁰C for 2hrs.The weight of the specimens before and after exposure to elevate

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Inozemtcev, Aleksandr Sergeevich, and Sergey Dmitrievich Epikhin. "The Effect of Dense and Hollow Aggregates on the Properties of Lightweight Self-Compacting Concrete." Materials 17, no. 18 (2024): 4569. http://dx.doi.org/10.3390/ma17184569.

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The development of self-compacting lightweight concretes is associated with solving two conflicting tasks: achieving a structure with both high flowability and homogeneity. This study aimed to identify the technological and rheological characteristics of the flow of concrete mixtures D1400…D1600 based on hollow microspheres in comparison with heavy fine-grained D2200 concrete and to establish their structural and physico-mechanical characteristics. The study of the concrete mixtures was carried out using the slump flow test and the rotational viscometry method. The physical and mechanical prop

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Miryuk, Olga. "Service properties of porous liquid glass concrete." E3S Web of Conferences 410 (2023): 01008. http://dx.doi.org/10.1051/e3sconf/202341001008.

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The article presents studies’ results of cementless lightweight concretes based on porous granular aggregate. Lightweight concrete components are specially synthesized from mixtures containing liquid sodium glass and thermal energy waste with various fineness. Thermal hardening of a matrix based on liquid glass and technogenic fillers at a temperature of 350ºС provided heat-insulating concrete with 480 kg/m3density and compressive strength of 4.7 MPa. The aim of the work is to study operational stability of lightweight concrete from genetically related components. Durability of lightweight con

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Ozyildirim, H. Celik, and Harikrishnan Nair. "Durable Concrete Overlays in Two Virginia Bridges." Transportation Research Record: Journal of the Transportation Research Board 2672, no. 27 (2018): 78–87. http://dx.doi.org/10.1177/0361198118777606.

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The purpose of this study was to implement innovative concretes with low permeability and reduced cracking potential in overlays to reduce chloride infiltration into the bridge decks. Two parallel bridges on Route 64 over Dunlap Creek in Alleghany County, Virginia, were selected for this study. For low cracking potential, relatively low water contents, shrinkage reducing admixtures, and lightweight aggregates were used. For low permeability, concretes had supplementary cementitious material and relatively low water–cementitious material ratios. In the overlays, five different materials were us

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Lee, Ming Ju, Ming Gin Lee, Jing Yu Chen, and Mang Tia. "Strength and Freeze-Thaw Testing of Lightweight Aggregate Concretes." Advanced Materials Research 723 (August 2013): 507–14. http://dx.doi.org/10.4028/www.scientific.net/amr.723.507.

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This investigation indicates the effects of freeze-thaw cycles on the strength development and durability of lightweight aggregate concretes. Two lightweight aggregate concrete, one normal concrete and one reactive powder concrete were used in this study, and total four types of concrete mix were named NC, LWC1, LWC2, and RPC. Before and after freeze-thaw test, the samples were evaluated by the compressive strength, fflexural strength, and impact abrasion tests. The test results show that steady decrease in compressive and flexural strength after freeze-thaw testing for most concrete specimens

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Litsomboon, Theradej, Pichai Nimityongskul, and Naveed Anwar. "Development of Lightweight Aggregate Concrete Containing Pulverized Fly Ash and Bottom Ash." Key Engineering Materials 400-402 (October 2008): 379–84. http://dx.doi.org/10.4028/www.scientific.net/kem.400-402.379.

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This study examines the feasibility of using different lightweight aggregates (LA) and bottom ash as coarse and fine aggregates in concrete with fly ash. The lightweight materials were composed of 3 types, namely pumice, cellular lightweight aggregate and MTEC lightweight aggregate. The tests for physical and mechanical properties of lightweight aggregate concretes (LWAC) were conducted in terms of workability, compressive strength, apparent density, abrasion resistance and absorption. Test results showed that compressive strength of LWAC increased with an increase in apparent density, which i

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Kitouni, S., and H. Houari. "Lightweight concrete with Algerian limestone dust: Part I: Study on 30% replacement to normal aggregate at early age." Cerâmica 59, no. 352 (2013): 600–608. http://dx.doi.org/10.1590/s0366-69132013000400017.

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The mechanical characteristics of the lightweight aggregate concretes (LWAC) strongly depend on the proportions of aggregates in the formulation. In particular, because of their strong porosity, the lightweight aggregates are much more deformable than the cementations matrix and their influence on concrete strength is complex. This paper focuses on studying the physical performance of concrete formulated with substitution of 30% of coarse aggregates by limestone dust. In this article an attempt is made to provide information on the elastic properties of lightweight concrete (LWC) from tests ca

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Alqahtani, Fahad K. "A Sustainable Alternative for Green Structural Lightweight Concrete: Performance Evaluation." Materials 15, no. 23 (2022): 8621. http://dx.doi.org/10.3390/ma15238621.

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The use of structural lightweight concrete in the construction industry is on the rise in the last few decades mainly because of the higher strength per unit density, as it reduces the total deal load of the structural elements as compared with normal strength concrete. In addition, the environmental concerns of the concrete industry have gained supreme importance in recent times, demanding vital and effectual steps. In this regard, the current study was carried out to formulate an alternative approach for producing a sustainable lightweight structural concrete. The study followed two stages:

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Dhengare, Sagar W., Ajay L. Dandge, and H. R. Nikhade. "Cellular Lightweight Concrete." Journal of Advance Research in Mechanical & Civil Engineering (ISSN: 2208-2379) 2, no. 4 (2015): 22–25. http://dx.doi.org/10.53555/nnmce.v2i4.332.

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Cellular Light weight Concrete (CLWC) is not a new invention in concrete world. It has been known since ancient times. It was made using natural aggregates of volcanic origin such as pumice, scoria, etc. The Greeks and the Romans used pumice in building construction. Lightweight concrete can be defined as a type of concrete which includes an expanding agent in that it increases the volume of the mixture while giving additional qualities such as inability and lessened the dead weight. The usage of Cellular Light-weight Concrete (CLC) blocks gives a prospective solution to building construction

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Pereira, Wesley Batista, Simone Perruci Galvão, Juliana Claudino Veras, and João Manoel de Freitas Mota. "Mix desing method lightweight concrete." Revista de Gestão e Secretariado 15, no. 2 (2024): e3509. http://dx.doi.org/10.7769/gesec.v15i2.3509.

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There are several methodologies for Portland cement concrete dosage, among these, the method recommended by the Technological Research Institute of the State of São Paulo - IPTUSP, which is widespread in Brazil. Although it does not present dosage factors for lightweight concrete, this paper proposes a dosage method based on the IPT method for lightweight concrete with EPS. The concrete was dosed with CPV ARI cement, sand and EPS, and two volumes of aggregates (m) were made, thus making a rich and a poor trace, for this, two aggregate contents (m) were executed, thus making a rich and a poor m

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Anish, M., T. Arunkumar, J. Jayaprabakar, et al. "Thermal Conductivity of Thermally Insulated Concretes in a Nuclear Safety Vessel of Reactor Vault: Experimental Interpretation." Advances in Materials Science and Engineering 2022 (June 21, 2022): 1–12. http://dx.doi.org/10.1155/2022/4493910.

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Thermally insulated concretes are a type of alternative building material that helps improve thermal efficiency in nuclear reactor vault safety vessel applications. The experimental results of thermal conductivity values of lightweight concrete materials at various temperatures are presented in this paper. To minimize heat conduction in concrete, different lightweight aggregates and vermiculite are employed as coarse aggregate alternatives.Both linear and plane heat source approaches are used to calculate the thermal conductivity values of the specimens. The findings emphasize that increasing

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Przychodzień, Patrycja, and Jacek Katzer. "Properties of Structural Lightweight Aggregate Concrete Based on Sintered Fly Ash and Modified with Exfoliated Vermiculite." Materials 14, no. 20 (2021): 5922. http://dx.doi.org/10.3390/ma14205922.

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Despite the undoubted advantages of using lightweight concrete, its actual use for structural elements is still relatively small in comparison to ordinary concrete. One of the reasons is the wide range of densities and properties of lightweight aggregates available on the market. As a part of the research, properties of concrete based on sintered fly ash were determined. The ash, due to its relatively high density is suitable to be used as a filler for structural concretes. Concrete was based on a mixture of sintered fly ash and exfoliated vermiculite aggregate also tested. The purpose of the

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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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Basset, R., and S. M. Uzumeri. "Effect of confinement on the behaviour of high-strength lightweight concrete columns." Canadian Journal of Civil Engineering 13, no. 6 (1986): 741–51. http://dx.doi.org/10.1139/l86-109.

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This paper summarizes an experimental investigation into the behaviour of high strength sand – lightweight concrete columns confined with rectangular ties. Fifteen reinforced and three unreinforced specimens were tested under monotonically increasing axial compression. Variables considered in this study were the longitudinal steel distribution and tie configuration, the tie steel spacing, the amount of tie steel, and the amount of longitudinal steel.The results indicated that unconfined high-strength lightweight aggregate concrete is a brittle material. The addition of lateral confining steel

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Mieszczak, Małgorzata, and Lucyna Domagała. "Lightweight Aggregate Concrete as an Alternative for Dense Concrete in Post-Tensioned Concrete Slab." Materials Science Forum 926 (July 2018): 140–45. http://dx.doi.org/10.4028/www.scientific.net/msf.926.140.

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The paper presents the results of tests conducted on two lightweight aggregate concretes made of new national Certyd artificial aggregate. This research is intended to first application of lightweight concrete to construct large-span post-tensioned slab. In addition to mechanical properties development, shrinkage and creep during 3 months of loading were tested. The obtained results are compared with theoretical results predicted by standard. Conducted tests indicated, that measured values of shrinkage and creep are significantly lower than predicted ones. This is promise for application of te

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Wathoni, Muhammad Munawir, Dwi Sabda Budi Prasetya, and Dwi Pangga. "Uji Mekanik Bata Ringan Berbahan Dasar Limbah Pengolahan Emas dengan Variasi Limbah Batu-bara dan Semen." Jurnal Penelitian dan Pengkajian Ilmu Pendidikan: e-Saintika 2, no. 1 (2018): 41. http://dx.doi.org/10.36312/e-saintika.v2i1.110.

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[Title: The Mechanical Test of Lightweight Brick Made from Gold Processing Waste with Variations in Coal and Cement Waste]. The purposes of this research are to make lightweight concrete using waste processing of gold with variation fly ash and cement the better than conventional concrete. The value of this research has tested mechanics which comprises density, porosity and strength. The research has done with some stage are: 1) Make lightweight concrete using LPE with variation fly ash and cement. 2) Characterization of the samples which comprise density, porosity and the strength, 3) Analysi

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Gomes, Maria da Glória, José Alexandre Bogas, Sofia Real, António Moret Rodrigues, and Rita Machete. "Thermal Performance Assessment of Lightweight Aggregate Concrete by Different Test Methods." Sustainability 15, no. 14 (2023): 11105. http://dx.doi.org/10.3390/su151411105.

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Structural lightweight aggregate concrete is currently an alternative to normal-weight concrete when thermal insulation properties are required to meet the objectives of energy efficiency and sustainability. The accurate evaluation of the thermal performance is thus essential for designing structural lightweight concrete elements. This paper aims to evaluate the thermal behavior of structural lightweight aggregate concrete, assessed through different tests methods. To this end, a vast experimental campaign was carried out involving specimens produced with several types of lightweight aggregate

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K., A. N. Silva, K. B. Pinheiro K., H. P. Lima R., L. G. Teles V., and C. C. Gomes P. "STUDY OF THERMAL CONDUCTIVITY IN CELLULAR CONCRETES." International Journal of Advances in Engineering and Technology 17, no. 1 (2024): 72–82. https://doi.org/10.5281/zenodo.10862532.

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<em>The thermal performance of buildings has been crucial for reducing energy consumption. Concrete, with its good thermal conductivity, is the most widely used material in construction, contributing to increased energy consumption. Lowering concrete density, however, hampers thermal conductivity. The use of lightweight concrete has been recommended for this purpose. Foamed cellular concrete (FCC) is an alternative to achieve lightweight concrete. There is a research gap regarding the thermal conductivity of FCE. In this study, a normal density concrete (NDC) and two FCC’s, one with 10%

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Huang, Yanxia, Weiying Huang, Qunyi Huang, Wanyong Tuo, and Qingchao Feng. "Study on the Axial Compressive Behavior and Constitutive Relationship of Lightweight Mixed Ceramic Concrete." Materials 18, no. 2 (2025): 390. https://doi.org/10.3390/ma18020390.

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To thoroughly study the stress–strain relationship of lightweight mixed ceramic concrete, this paper conducts axial compressive strength tests on three groups of lightweight mixed ceramic concrete specimens with different types and contents as the basis. It establishes the elastic modulus calculation formula and compressive stress–strain formula for lightweight mixed ceramic concrete by combining with the current standards and related research. The results show that lightweight mixed ceramic concrete, made of a mixture of different types and densities of ceramic grains, has better mechanical p

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Ming, Liew Yun, Andrei Victor Sandu, Heah Cheng Yong, et al. "Compressive Strength and Thermal Conductivity of Fly Ash Geopolymer Concrete Incorporated with Lightweight Aggregate, Expanded Clay Aggregate and Foaming Agent." Revista de Chimie 70, no. 11 (2019): 4021–28. http://dx.doi.org/10.37358/rc.19.11.7695.

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This paper investigates the effect of incorporation of lightweight aggregate and foam in the preparation of lightweight aggregate geopolymer concrete (LWAGC) and lightweight aggregate foamed geopolymer concrete (LWAFGC). The geopolymer paste was formed by alkali activation of Class F fly ash in mixture of sodium silicate and sodium hydroxide solution. LWAGC was incorporated with expanded clay lightweight aggregate and river sand while hydrogen peroxide was added as foaming agent for LWAFGC. Results showed that LWAGC and LWAFGC achieved an excellent 28-day compressive strength of 60 MPa and 20

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Bodnárová, Lenka, Jitka Peterková, Jiri Zach, and Kateřina Sovová. "Determination of Thermal Conductivity on Lightweight Concretes." Key Engineering Materials 677 (January 2016): 163–68. http://dx.doi.org/10.4028/www.scientific.net/kem.677.163.

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A range of testing methods were used to study the potential structural changes as a result of the effects of high temperatures on lightweight types of concrete developed above all for fire resistant structures. One such test for monitoring changes in concrete structures is the non-stationary determination of the coefficient of thermal conductivity using the hot wire method. The matrix structure progressively collapses as a result of the effects of high temperatures on the concrete structure ́s surface because erosion takes place of the matrix and aggregate porous structures. The degradation of

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Medvedeva, G., and A. Lifant'eva A.F. "THE RESEARCH OF MULTILAYER OUTER FENCING INCLUDING MATERIALS USING ASH AND SLAG WASTE OF THERMAL POWER PLANTS." Construction Materials and Products 3, no. 2 (2020): 29–35. http://dx.doi.org/10.34031/2618-7183-2020-3-2-29-35.

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the most important direction of resource saving in construction is the widespread use of secondary material resources, which are waste products. The use of secondary products of industry as raw materials for the production of various building materials is very important, because it provides production with rich sources of cheap and, often, already prepared raw materials; lead to lower costs for the production of some building materials, and therefore saves capital investments intended for the construction of buildings and structures; release large areas of land and reduce the impact on the env

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Alireza, Behnamnia, and Barati Maryam. "Seismic Behavior of Steel-Concrete Composite Columns Under Cyclic Lateral Loading." Journal of Civil Engineering and Materials Application 3, no. 4 (2019): 183–92. https://doi.org/10.22034/JCEMA.2019.99690.

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Lightweight concrete has been used in the construction industry for many years and by the introduction of modern technologies in the construction industry, this type of concrete has been accounted as one of the powerful and reliable materials in the construction industry. The density of lightweight concrete is about 0.56 that of the ordinary concrete. This type of concrete is commonly used as a flooring material in buildings. Thus there is possibility of its corrosion   in different climatic conditions. In the present research, we would investigate the compressive strength and durabi

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Pejman, Sekhavati, Jafarkazemi Mahyar, and Kaya Özgür. "Investigating Durability Behavior and Compressive Strength of Lightweight Concrete Containing the Nano-Silica and Nano Lime Additives In the Acid Environment." Journal of Civil Engineering and Materials Application 3, no. 2 (2019): 109–17. https://doi.org/10.22034/JCEMA.2019.93622.

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Lightweight concrete has been used in the construction industry for many years, and by introduction of modern technologies in the construction industry, this type of concrete has been accounted as one of the powerful and reliable materials in the construction industry. The density of lightweight concrete is about 0.56 that of the ordinary concrete. This type of concrete is commonly used as a flooring material in buildings. Thus there is possibility of its corrosion   in different climatic conditions. In the present research, we would investigate the compressive strength and durabilit

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Zha, Jin, Bei Xing Li, Jin Hui Li, He Gao, and Gong Cui. "Internal Curing of Saturated Lightweight Aggregate in High Performance Combined Concrete." Key Engineering Materials 405-406 (January 2009): 212–18. http://dx.doi.org/10.4028/www.scientific.net/kem.405-406.212.

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This paper investigated the mechanical properties, workability, autogenous shrinkage, drying shrinkage and durability of the high performance combined aggregate concrete with the coarse aggregate replaced by the lightweight aggregate in the volume fraction from 0% to 50%. The results demonstrated that the fresh concrete with the lightweight aggregate volume fraction of 10% and 30% had good workability, but degrade with a high volume fraction of 50 %. The hardened concrete with 10% and 30% lightweight aggregate replacement had similar compressive strength and splitting tensile strength comparin

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Korolev, Evgeniy Valerjevich, and Alexandr Sergeevich Inozemtcev. "Preparation and Research of the High-Strength Lightweight Concrete Based on Hollow Microspheres." Advanced Materials Research 746 (August 2013): 285–88. http://dx.doi.org/10.4028/www.scientific.net/amr.746.285.

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The paper presents the results of research aimed at development of nanomodified high-strength lightweight concrete for construction. The developed concretes are of low average density and high ultimate compressive strength. It is shown that to produce this type of concrete one need to use hollow glass and aluminosilicate microspheres. To increase the durability of adhesion between cement stone and fine filler the authors offer to use complex nanodimensional modifier based on iron hydroxide sol and silica sol as a surface nanomodifier for hollow microspheres. It is hypothesized that the propose

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Ahmed, Ahmed Rabie, Magdy El Yamany, and Ahmed El Kholy. "High Strength Lightweight Concrete, using Scoria and Mineral Admixture." International Journal of Membrane Science and Technology 10, no. 2 (2023): 3463–71. http://dx.doi.org/10.15379/ijmst.v10i2.3151.

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The purpose of this study is to investigate a high-strength lightweight concrete (HSLWC) using Scoria aggregate and mineral admixtures. The experiment findings are presented in this paper. In the concrete mix, basaltic (scoria) was used as a lightweight aggregate. A control lightweight concrete mixture made with lightweight basaltic (scoria) containing ordinary Portland cement as the binder was prepared. The control lightweight concrete mixture was modified by replacing 10% of the cement with silica fume. The control lightweight concrete mixture was also modified by replacing 10% of the cement

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Aslam, Muhammad, Payam Shafigh, and Mohd Zamin Jumaat. "Structural Lightweight Aggregate Concrete by Incorporating Solid Wastes as Coarse Lightweight Aggregate." Applied Mechanics and Materials 749 (April 2015): 337–42. http://dx.doi.org/10.4028/www.scientific.net/amm.749.337.

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Structural lightweight aggregate concrete offers several benefits as compared to the normal weight concrete. Most common methods of producing structural lightweight concrete is by using artificial lightweight aggregates. However, the cost of the production of artificial lightweight aggregates is high due to energy and raw materials consumption. The use of waste and by-product materials as lightweight aggregate in concrete can provide a better solution to reducing the negative impact of the concrete industry. This paper reports an investigation to produce structural lightweight aggregate concre

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Yao, Weijing, Jianyong Pang, and Yushan Liu. "Performance Degradation and Microscopic Analysis of Lightweight Aggregate Concrete after Exposure to High Temperature." Materials 13, no. 7 (2020): 1566. http://dx.doi.org/10.3390/ma13071566.

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This study analyses the deterioration of mechanical properties in lightweight concrete after exposure to room temperature (20 °C) and high temperature, i.e., up to 1000 °C, including changes in visual appearance, loss of mass, and compressive strength. All-lightweight shale ceramsite aggregate concrete (ALWAC) and semi-lightweight shale ceramsite aggregate concrete (SLWAC) are prepared using an absolute volume method to analyse the relationships between relative ultrasonic pulse velocity, loss rate of compressive strength, damage degree, and temperature levels. Our results show that, under hig

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Mohamed Daood, Daad, and Dr Nadia Salim Esmaeil. "Processing Lightweight Aggregate to produce Lightweight Concrete." AL-Rafdain Engineering Journal (AREJ) 18, no. 6 (2010): 10–23. http://dx.doi.org/10.33899/rengj.2010.35172.

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Bibora, P., V. Prachar, O. Svitak, and R. Zavrelova. "Light autoclaved foam concrete with foam glass-based aggregate." IOP Conference Series: Materials Science and Engineering 1205, no. 1 (2021): 012006. http://dx.doi.org/10.1088/1757-899x/1205/1/012006.

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Abstract The presented research aims to develop new optimized composition of novel lightweight concrete with a very low bulk density. Low bulk density of developed lightweight concrete is achieved by using a combination of non-traditional lightweight artificial fillers, dispersed fibre reinforcement and pre-generated technical foam. The methodology of lightweight concrete test specimen production, based on technologies commonly applied for the production of lightweight concrete, foam concrete or autoclaved aerated concrete was also designed and verified. Not only the physical and mechanical pa

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Mohammed Jawad, Raed K., Mohammed J. Kadhim, and Hamza M. Kamal. "A REVIEW OF THE EFFECT OF ADDITIVES ON THE MECHANICAL PROPERTIES OF LIGHTWEIGHT CONCRETE." Journal of Engineering and Sustainable Development 27, no. 6 (2023): 713–24. http://dx.doi.org/10.31272/jeasd.27.6.4.

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Many organizations around the world have recognized lightweight, long-lasting, cost and environmentally-friendly construction materials as a future necessity. The lightweight concrete is manufactured mainly either by replacing the original aggregate with lightweight aggregate or addition foam production materials to concrete mixtures. These additions lead to a decrease in the lightweight concrete density and change mechanical properties such as compressive strength. Therefore, there is much experimental research has been conducted to add different material types that can improve lightweight co

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Hoang Minh, Duc, and Ly Le Phuong. "Effect of matrix particle size on EPS lightweight concrete properties." MATEC Web of Conferences 251 (2018): 01027. http://dx.doi.org/10.1051/matecconf/201825101027.

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Expanded polystyrene lightweight concrete is a composite which can be made by adding expanded polystyrene aggregate in normalweight concrete (as matrix). The research was focused on the effect of properties and volume of the matrix on the properties of lightweight concrete. The results show that properties of structural polystyrene concrete, such as workability and compressive strength, depend on the aggregate size of the matrix. It also shows that decreasing aggregate size of the matrix is the effective way to increase workability and compressive strength of lightweight concrete. When the den

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