Academic literature on the topic 'Alkali-activated Portland composite cement'

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Journal articles on the topic "Alkali-activated Portland composite cement"

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Rovnaník, Pavel, Ivo Kusák, Pavel Schmid, and Patrik Bayer. "A Comparison of the Resistance- and Capacitance-Based Sensing of Geopolymer and Cement Composites with Graphite Filler Under Compression." Materials 18, no. 4 (2025): 750. https://doi.org/10.3390/ma18040750.

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Aluminosilicate binders, such as Portland cement or geopolymers, are generally considered electrical insulators. In order to decrease their electrical resistance, electrically conductive fillers are added. This brings new application possibilities, such as the self-sensing and self-monitoring of smart structures. In this study, three different aluminosilicate composites with the same amount of fine graphite filler (6% with respect to the basic aluminosilicate raw material) were tested for resistance- and capacitance-based self-sensing properties. Portland cement and two geopolymer binders were
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Smirnova, Olga M., Ignacio Menendez Pidal, Aleksandr V. Alekseev, Dmitry N. Petrov, and Mikhail G. Popov. "Strain Hardening of Polypropylene Microfiber Reinforced Composite Based on Alkali-Activated Slag Matrix." Materials 15, no. 4 (2022): 1607. http://dx.doi.org/10.3390/ma15041607.

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A comparative study of the fracture features, strength and deformation properties of pseudo strain-hardening composites based on alkali-activated slag and Portland cement matrices with polypropylene microfiber was carried out. Correlations between their compositions and characteristics of stress–strain diagrams under tension in bending with an additional determination of acoustic emission parameters were determined. An average strength alkali-activated slag matrix with compressive strength of 40 MPa and a high-strength Portland cement matrix with compressive strength of 70 MPa were used. The m
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Boháčová, Jana, and Lukáš Janalík. "Preparation and Verification of Properties of Alkali-Activated Composite." Solid State Phenomena 296 (August 2019): 209–14. http://dx.doi.org/10.4028/www.scientific.net/ssp.296.209.

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The paper deals to create alkali activated composite based on the recipe of high-strength concrete. The paper includes the review of conditions for high-strength concrete proposing and preparation. Principles of design of high performance concrete based on Portland cement as a binder were described. The experiment was focused on the strength investigation of composites with different ratios of cement to slag, and also the effect of used activator on strength parameters was investigated.
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Krivenko, Pavel V., Myroslav Sanytsky, and Tetiana Kropyvnytska. "The Effect of Nanosilica on the Early Strength of Alkali-Activated Portland Composite Cements." Solid State Phenomena 296 (August 2019): 21–26. http://dx.doi.org/10.4028/www.scientific.net/ssp.296.21.

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Significant reduction of carbon footprint of the construction industry is achieved through the use of composite Portland cements. However, substitution levels of additives in the composite cements are limited due to slow strength development arising from low reactivity of the pozzolana compared to clinker phases especially at the early age. The aim of the study was to evaluate effect of nanosilica on formation of strength properties and structure at the early age. The Portland composite cement containing clinker, granulated blast furnace slag, zeolite tuff as natural pozzolana and limestone wi
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Rovnaník, Pavel, and Ivo Kusák. "Electrical Properties of Steel Fibre Reinforced Alkali-Activated Slag Composite." Key Engineering Materials 760 (January 2018): 55–60. http://dx.doi.org/10.4028/www.scientific.net/kem.760.55.

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Alkali-activated slag is an alternative binder to the ordinary Portland cement. In order to improve its tensile properties steel fibres as dispersed reinforcement can be used. Since steel is very good conductor it changes the electrical properties of alkali-activated slag composite that can have a potential to be used as self-sensing material then. In this study up to 20% of steel fibres by mass of the slag was added to alkali-activated slag mortar and the mechanical properties, electrical resistance, capacitance and microstructure of the composites were investigated. The results showed that t
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Filazi, Ahmet, Nesrin Kurtoğlu, and Fatih Kural. "The Production of Rice Husk Ash and Blast Furnace Slag-Based Alkali-Activated Composites under High-Temperature Effects." Journal of Advanced Applied Sciences 3, no. 2 (2024): 66–78. https://doi.org/10.61326/jaasci.v3i2.318.

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Alkali-activated concretes offer several advantages over conventional Portland cement-based concretes, including environmental sustainability, cost-effectiveness, and improved permeability. The use of alkali-activated concretes, as a replacement for Portland cement, provides significant environmental benefits, such as reducing carbon dioxide emissions by up to 80%, and facilitates the recycling and reuse of industrial and agricultural by-products. This study focuses on the development of alkali-activated concrete by incorporating industrial by-products like blast furnace slag and rice husk ash
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Sithole, Thandiwe, Nelson Tsotetsi, and Tebogo Mashifana. "Synthesis of Ambient Cured GGBFS Based Alkali Activated Binder Using a Sole Alkaline Activator: A Feasibility Study." Applied Sciences 11, no. 13 (2021): 5887. http://dx.doi.org/10.3390/app11135887.

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Utilisation of industrial waste-based material to develop a novel binding material as an alternative to Ordinary Portland Cement (OPC) has attracted growing attention recently to reduce or eliminate the environmental footprint associated with OPC. This paper presents an experimental study on the synthesis and evaluation of alkali activated Ground granulated blast furnace slag (GGBFS) composite using a NaOH solution as an alkaline activator without addition of silicate solution. Different NaOH concentrations were used to produce varied GGBFS based alkali activated composites that were evaluated
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Hung, Chi-Che, Yuan-Chieh Wu, Wei-Ting Lin, Jiang-Jhy Chang, and Wei-Chung Yeih. "Effect of Mixture Variables on Durability for Alkali-Activated Slag Cementitious." Materials 11, no. 11 (2018): 2252. http://dx.doi.org/10.3390/ma11112252.

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In this study, the influence of three mixture variables named Sand/Aggregate ratio, Liquid/Binder ratio, and Paste/Aggregate ratio on the cementitious properties were studied. The durability of cementitious including absorption, absorption rate, resistivity, rapid chloride permeability index, and carbonation rate were examined. Results showed that the alkali-activated slag cementitious has superior durability. The trends of influences on the composites properties for these three mixture variables are similar to those for the ordinary Portland cement concrete. It means that the experiences for
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Salas Montoya, Andres, Loth I. Rodríguez-Barboza, Fabiola Colmenero Fonseca, Javier Cárcel-Carrasco, and Lauren Y. Gómez-Zamorano. "Composite Cements Using Ground Granulated Blast Furnace Slag, Fly Ash, and Geothermal Silica with Alkali Activation." Buildings 13, no. 7 (2023): 1854. http://dx.doi.org/10.3390/buildings13071854.

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In recent decades, alkali activated and blended cements have attracted great interest worldwide due to their advantages of low energy cost, high strength, and good durability. This study evaluated the effects of replacing 50% of Portland cement with a mixture of three waste materials: ground granulated blast furnace slag (GGBFS), fly ash (FA), and geothermal waste (GS), with and without external alkaline activation, and activated with different alkali agents: 4 and 7% Na2O equivalent of sodium hydroxide, sodium silicate (water glass), and sodium sulfate. After 90 days of curing, samples were c
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Ranger, Maxime, and Marianne Tange Hasholt. "Relationship between Chloride Migration, Bulk Electrical Conductivity and Formation Factor of Blended Cement Pastes." Nordic Concrete Research 69, no. 2 (2023): 33–53. http://dx.doi.org/10.2478/ncr-2023-0009.

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Abstract This study investigates the links between the non-steady-state chloride migration coefficient, the bulk electrical conductivity and the formation factor of blended cement paste specimens. 18 different binders were tested: two Portland cements (low- and high-alkali) in combination with limestone filler, fly ash, calcined clay, two biomass ashes, sewage sludge ash and crushed brick, as well as two Portland composite cements. In addition, the latter and the low-alkali Portland cement were tested in concrete as well for comparison. Mixes with high-alkali cement showed better resistance to
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Dissertations / Theses on the topic "Alkali-activated Portland composite cement"

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Oberlink, Anne Elizabeth. "NON-PORTLAND CEMENT ACTIVATION OF BLAST FURNACE SLAG." UKnowledge, 2010. http://uknowledge.uky.edu/gradschool_theses/25.

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The purpose of this project was to produce a “greener” cement from granulated ground blast furnace slag (GGBS) using non-Portland cement activation. By eventually developing “greener” cement, the ultimate goal of this research project would be to reduce the amount of Portland cement used in concrete, therefore reducing the amount of carbon dioxide emitted into the atmosphere during cement production. This research studies the behavior of mineral binders that do not contain Portland cement but instead comprise GGBS activated by calcium compounds or fluidized bed combustion (FBC) bottom ash. The
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Bradová, Lada. "Studium alkalicko křemičité reakce v hybridních systémech." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2020. http://www.nusl.cz/ntk/nusl-414119.

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This study evaluates question of alkali–silica reaction (ASR) in hybrid system, which was designed in the bachelor's thesis, to meet the requirements of EN 197-1 and classified to the Blastfurnace CEM III/C cements. The durability of this system is a great unknown. For this reason, the same methods (ASTM C1260, ASTM C289 and ASTM C856) were used to observer the ASR effects as the ones used to observer the Portland cement based concrete. Supplementary methods include determination of compressive strengths according to EN 196-2 and scanning electron microscopy to observe the microstructure. Hybr
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Bílek, Vlastimil. "Možnosti využití odpadních písků z výroby vodního skla ve stavebnictví." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2013. http://www.nusl.cz/ntk/nusl-216992.

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Nowadays, the waste sands from the water glass production have no utilization and due to high alkali content are considered as a dangerous waste. So the aim of this thesis is to find and study some possibilities of their utilization in the building industry. First of all, some necessary analysis of these sands were performed and then some advantages and disadvantages of their application for production of materials based on portland cement and alkali activated materials were studied. Characteristics of fresh and hardened pastes, mortars and concretes containing these waste sands were determine
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Books on the topic "Alkali-activated Portland composite cement"

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Alternative Concrete – Geopolymer Concrete. Materials Research Forum LLC, 2021. http://dx.doi.org/10.21741/9781644901533.

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Concrete is the most versatile, durable and reliable material and is the most used building material. It requires large amounts of Portland cement which has environmental problems associated with its production. Hence, an alternative concrete – geopolymer concrete is needed. The general aim of this book is to make significant contributions in understanding and deciphering the mechanisms of the realization of the alkali-activated fly ash-based geopolymer concrete and, at the same time, to present the main characteristics of the materials, components, as well as the influence that they have on t
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Book chapters on the topic "Alkali-activated Portland composite cement"

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Mondal, Achintya Kumar, and Amit Shiuly. "Utilizing Alkali-Activated Composite with Tannery Sludge and Blast Furnace Slag to Offer a Green Alternative to Portland Cement in the Pursuit of Eco-friendly Development." In Lecture Notes in Mechanical Engineering. Springer Nature Singapore, 2024. https://doi.org/10.1007/978-981-97-7308-4_34.

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Zhang, Shizhe, Marija Nedeljković, Bahman Ghiassi, and Guang Ye. "A Comparative Study on Deflection-Hardening Behavior of Ductile Alkali-Activated Composite." In Strain-Hardening Cement-Based Composites. Springer Netherlands, 2017. http://dx.doi.org/10.1007/978-94-024-1194-2_14.

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Nagaraju, T. Vamsi, and Alireza Bahrami. "Sustainable Geopolymer Bricks Manufacturing Using Rice Husk Ash: An Alternative to Fired Clay Bricks." In Sustainable Structures and Buildings. Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-46688-5_5.

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AbstractFired clay bricks and cement bricks are commonly used in the construction industry. However, the greenhouse gas emissions and high energy use involved in production of fired clay bricks and cement bricks favor the utilization of geopolymer bricks instead. A change to geopolymer bricks would significantly improve the present housing and agricultural biomass waste problems. Using agricultural biomass ash waste to create sustainable products is one alternative. Products that have been alkali-activated are said to be cost-efficient and sustainably produced and contain no Portland cement. I
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Zhao, Yongcong, Meini Su, and Yong Wang. "Early-Day Effects of Graphene on NA2CO3: Activated GGBS Concrete." In Lecture Notes in Civil Engineering. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-69626-8_12.

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AbstractAchieving net-zero construction is curial for construction sector to mitigate the effects of climate change. Using alkali-activated materials (AAM) to replace the carbon intensive ordinary Portland cement (OPC) in concrete has attracted many researchers’ attention in the past years. However, several problems are associated with AAM, such as lower early age mechanical strength. This paper aimed to investigate the early days effects of graphene on hydration mechanism of Na2CO3-activated granulated blast-furnace slag (GGBS) concrete. Graphene dosages ranging from 0.005% to 0.02% (of slag
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Fernando, Sarah, Chamila Gunasekara, David W. Law, M. C. M. Nasvi, Sujeeva Setunge, and Ranjith Dissanayake. "Development of Blended Fly Ash-Rice Husk Ash–Based Alkali-Activated Bricks: A Sustainable Alternative to Portland Cement Brick." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-2886-4_45.

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Vigna, Erika, and Jørgen Skibsted. "Optimization of Alkali Activated Portland Cement—Calcined Clay Blends Based on Phase Assemblage in the Na2O–CaO–Al2O3–SiO2–H2O System." In RILEM Bookseries. Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-9939-3_13.

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Murillo, Luz M., Silvio Delvasto, and Marisol Gordillo. "A study of a hybrid binder based on alkali-activated ceramic tile wastes and portland cement." In Sustainable and Nonconventional Construction Materials using Inorganic Bonded Fiber Composites. Elsevier, 2017. http://dx.doi.org/10.1016/b978-0-08-102001-2.00013-9.

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Kryvenko, Pavlo, Igor Rudenko, Oleksandr Konstantynovskyi, and Artem Kovalchuk. "Improvement of Early Strength of Slag Containing Portland Cements." In Advances in Transdisciplinary Engineering. IOS Press, 2024. https://doi.org/10.3233/atde241029.

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The implementation of alkali-activated Portland cements (or alkali-activated slag cement as per the Ukrainian National Standard DSTU B V.2.7-181:2009) in materials for repair and retrofitting (repair concretes and mortars, shotcrete concretes, reactive powder concretes) is effective is due to their conformity with modern trends in construction. The actuality to produce of alkali-activated Portland cements using the one-part technology causes the application of sodium silicate as the most effective activator in a solid aggregate state. Application of proposed alkali-activated Portland cements i
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Dong, Minhao, and Mohamed Elchalakani. "Alkali-activated concrete versus ordinary Portland cement concrete and Roman concrete when using sea sand and seawater." In Handbook of Advances in Alkali-Activated Concrete. Elsevier, 2022. http://dx.doi.org/10.1016/b978-0-323-85469-6.00018-0.

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Bier, Thomas A., Eva Kränzlein, Elsa Qoku, and Sandra Waida. "Chapter 7 Utilization of Supplementary cementitious materials (SCM) in Portland cement, alkali activated and ternary binders." In Industrial Waste. De Gruyter, 2021. http://dx.doi.org/10.1515/9783110674941-007.

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Conference papers on the topic "Alkali-activated Portland composite cement"

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Zhou, Bo, and Mingyang Zhang. "Shrinkage and microstructural evolution analysis of AAFS with tetrasodium of 1-hydroxy ethylidene-1, 1-diphosphonic acid (HEDP•4Na)." In IABSE Symposium, Tokyo 2025: Environmentally Friendly Technologies and Structures: Focusing on Sustainable Approaches. International Association for Bridge and Structural Engineering (IABSE), 2025. https://doi.org/10.2749/tokyo.2025.0251.

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<p>Alkali-activated materials (AAMs) are increasingly recognized as environmentally friendly alternatives to traditional Portland cement because of their reduced environmental impact. This study investigates the shrinkage behavior and microstructural changes in alkali-activated fly ash- slag hybrids (AAFS) containing tetrasodium 1-hydroxy ethylidene-1, 1-diphosphonic acid (HEDP•4Na). The study includes experimental analyses to measure shrinkage properties, evaluate phase changes in the microstructure, and assess the material's mechanical stability. The results indicate that HEDP•4Na sign
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Isa, Muhammad Nura, and Hanizam Awang. "Development of User Friendly Geopolymer Mortar Using Wood Ash Lye as Alkaline Activator." In 2024 10th International Conference on Architecture, Materials and Construction & 2024 5th International Conference on Building Science, Technology and Sustainability. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-me0x5u.

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Geopolymer concrete is an environmentally friendly substitute for traditional Portland cement-based concrete. In contrast to conventional concrete, which contributes to substantial carbon dioxide emissions through Portland cement production, geopolymer concrete utilizes aluminosilicate materials like fly ash, slag, or metakaolin as binders. This innovative approach aims to reduce the environmental impact of construction materials by offering a more sustainable alternative to conventional cement-based concrete. Unfortunately, the technology of geopolymer concrete was mainly confined to laborato
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Singh, Balbir, Ee Loon Tan, Zhu Pan, Olivia Mirza, and Youtam Mamo. "Experimental Analysis of Composite Push Test Integrating Geopolymer Concrete." In 12th international conference on ‘Advances in Steel-Concrete Composite Structures’ - ASCCS 2018. Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/asccs2018.2018.7278.

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This paper primarily focuses on implementing constructions practises that are sustainable, and that can also meet the current demand for infrastructure development around the world. The cement industry is one of the largest industries in the world, as result current construction practices are causing adverse environmental issues ranging from the excessive utilisation of natural resources, emission of greenhouse gases and producing an excessive amount of waste. Thus, to tackle the problem one encouraging solution is to use alkali activated Geopolymer concrete that utilises waste product such as
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Júnior, L., M. Cheriaf, and J. Rocha. "Impact of Portland Cement Content on Alkali Activated Bottom Ash." In XV International Conference on Durability of Building Materials and Components. CIMNE, 2020. http://dx.doi.org/10.23967/dbmc.2020.180.

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Kadhim, Ahlam Jebur, and Othman Hameed Zinkaah. "Performance of Beams Incorporating Geopolymer and FRP Bars: A Review." In The 2nd International Conference on The Future Sustainable Energy. Trans Tech Publications Ltd, 2024. http://dx.doi.org/10.4028/p-kkpf30.

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Recently, civil engineering fields are seeking for the use of cost-effective, lightweight, durable, and environmentally friendly materials, giving less maintenance and providing long durability and resistance to hostile conditions. Therefore, there has been significant progress in the utilization of sophisticated composite materials as a reinforcement for various structural elements in the context of new construction buildings or rehabilitation.Fibre-reinforced polymer (FRP) are composite materials that have emerged as a potential method for enhancing the strength of concrete structures. FPR h
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Delgado-Plana, P., S. Bueno-Rodríguez, L. Pérez-Villarejo, and D. Eliche-Quesada. "Effect of Portland Cement Addition in Ferrosilicon Slag Alkali Activated Materials." In MATERIAIS. MDPI, 2022. http://dx.doi.org/10.3390/materproc2022008122.

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Hernández, Miriam, Carlos Rodríguez, Rosa Navarro, et al. "EFFECT OF HIGH GYPSUM CONTENTS IN MORTARS MADE WITH PORTLAND CEMENT AND ALKALI ACTIVATED SLAG." In Sixth International Conference on Sustainable Construction Materials and Technologies. Coventry University, 2024. http://dx.doi.org/10.18552/2024/scmt/105.

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Construction and Demolition Wastes (C&DW) are one of the most produced solid wastes in society in terms of volume. Controlling the presence of gypsum in recycled aggregates is crucial for their use as recycled aggregates in concrete production, as their presence may cause expansive reactions due to the formation of secondary ettringite. This article presents the results of an experimental campaign in which the effect of the presence of recycled aggregates containing gypsum was evaluated using various types of Portland cements (CEM I, CEM IIIB, CEM IV) and alkali-activated slag (AAS). Four
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Mousa, Ahmad. "THE EFFECT OF FERROUS METALLURGICAL SOLID WASTE ON THE CHEMICAL PERFORMANCE OF CEMENT COMPOSITES EXPOSED TO VARIOUS CHEMICAL ENVIRONMENTS." In 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022/5.1/s20.060.

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The Interest in recycling of materials to reduce the CO2 emissions and reduce the energy consumption has inspirited us to investigate the influence of ferrous metallurgical solid waste material namely "slag" on the performance of traditional Portland cement composites. The scrap material was mechanically treated by crushing followed by ball milling and classification. The mechanically treated slag was mixed with Portland cement without any modification. The mix was casted into the desired moulds and allowed to solidify at room temperature for two days. The samples were left to overnight in air
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ADEJO, Jacob Enejo. "Development of an innovative and environmentally friendly alternative binder for application in the Nigerian construction industry: A review." In Advances in Cement and Concrete. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903537-15.

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Abstract. The cement-based construction industries particularly in developing countries like Nigeria faces numerous challenges amongst are natural resource depletion, energy consumption, production costs, and greenhouse gas emissions (GHG) that contribute to climate change. Therefore, the creation of an innovative and environmentally friendly binder that will serve as an alternative building material with sound adaptation and application in construction is imperative. Portland Limestone Cement (PLC) binders have been replaced by an alkali-activated binder (AAB) which appears to have better pro
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Rovnaník, Pavel, Helena Karlíková, and Ivo Kusák. "Effect of moisture on the electrical properties of Portland cement-based and alkali-activated slag mortars." In 24TH TOPICAL CONFERENCE ON RADIO-FREQUENCY POWER IN PLASMAS. AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0137007.

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Reports on the topic "Alkali-activated Portland composite cement"

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Al-Chaar, Ghassan, Allison Brandvold, Andrij Kozych, and William Mendoza. 4D printing structures for extreme temperatures using metakaolin based geopolymers. Engineer Research and Development Center (U.S.), 2023. http://dx.doi.org/10.21079/11681/46750.

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Geopolymers (GPs) are a class of amorphous, aluminosilicate-based ceramics that cure at room temperature. GPs are formed by mixing an aluminosilicate source, which is metakaolin in this case, with an alkali activator solution, which can be either sodium or potassium water glass. GPs have attracted interest for use in structural applications over the past few decades because they have superior mechanical properties to ordinary Portland cement (OPC). Additionally, they can tolerate much higher temperatures and produce a fraction of the CO₂ compared to OPC. This project aims to develop geopolymer
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Sugama, Toshifumi. Alkali-activated Class F Fly Ash-rich Portland Cement Blends as Alternative Thermal Shock Resistant Cements. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1425181.

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