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Journal articles on the topic 'Lehigh Portland cement co'

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Published: 4 June 2021

Last updated: 28 July 2025

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1

Janavičius, Eugenijus, Mindaugas Daukšys, Gintautas Skripkiūnas, Džigita Nagrockienė, and Ala Daugėlienė. "THE EFFECT OF CEMENT MODIFICATION ON THE RHEOLOGICAL PROPERTIES OF CEMENT PASTE." Journal of Civil Engineering and Management 19, Supplement_1 (2014): S125—S130. http://dx.doi.org/10.3846/13923730.2013.851111.

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Experimental tests have determined the effect of slag, opoka (silica-calcite sedimentary rock), silica fume (SiO2) suspension, dolomite dust and sodium silicate solution (NaSS) together with the polycarboxylatether based plasticizing admixture on the yield stress and viscosity of Portland cement paste the rheological properties of which have been defined applying a rotational viscometer with co-axial cylinders. The tests have revealed that slag, opoka, silica fume suspension and dolomite dust added to cement paste by replacing 10% of Portland cement (by weight) have an effect on the yield stre

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Cable, James K., Edward J. Jaselskis, Russell C. Walters, Lifeng Li, and Chris R. Bauer. "Stringless Portland Cement Concrete Paving." Journal of Construction Engineering and Management 135, no. 11 (2009): 1253–60. http://dx.doi.org/10.1061/(asce)co.1943-7862.0000083.

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Mukesh, Kumar M., and Kumar K. Asis. "Geopolymer Cement: an Initiative towards the Replacement of Grey Cement by Green Cement in Future." Journal of Building Materials and Structures 8, no. 1 (2021): 1–8. https://doi.org/10.5281/zenodo.4509606.

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<strong>Abstract.</strong>  The emissions of greenhouse gases such as carbon dioxide from the production of Ordinary Portland Cement and Blended Portland Cement have widely affected the environment with increase in infrastructure development worldwide. Secondly, due to the continuous mining of limestone for the production of cement there is also simultaneous depletion of natural resources and hardly will it last up to maximum 40 years. Hence we need to switch over to some other alternate binders for constructions purpose in future. Geopolymer Cement is one of the inventions which is produ

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4

Yogendra, Kumar Verma, Mazumdar Bidyut, and Ghosh Prabir. "CO2 emission reduction using blast furnace slag for the clinker manufacturing in Cement Industry." Journal of Indian Chemical Society Vol. 97, Jul 2020 (2020): 1083–87. https://doi.org/10.5281/zenodo.5668093.

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Department of Chemical Engineering, National Institute of Technology Raipur, Raipur-492 010, Chhattisgarh, India <em>E-mail</em>: prabirg.che@nitrr.ac.in <em>Manuscript received online 14 April 2020, accepted 12 June 2020</em> The cement plant is a major CO<sub>2</sub> emitter during the clinker manufacturing process. CO<sub>2</sub> is mainly emitted at Calciner and Kiln due to calcination of raw materials and burning of fossil fuel. Worldwide several technologies and various measures have been taken for the reduction of CO<sub>2</sub> in cement plant i.e. efficiency improvement of thermal and

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Saccubai, S., M. Sarojadevi, and Aravamudan Raghavan. "Polymer-impregnated Portland cement mortars." Journal of Applied Polymer Science 61, no. 3 (1996): 577–84. http://dx.doi.org/10.1002/(sici)1097-4628(19960718)61:3<577::aid-app22>3.0.co;2-x.

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Madhumitha, R., and Dr.P.Senthamilselvi. "Numerical Investigation on Flexural Behaviour of Alkali Activated Rice husk Ash Based Concrete." Journal of Engineering Analysis and Design 5, no. 1 (2023): 1–7. https://doi.org/10.5281/zenodo.7597168.

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<em>Because it is found to be more adaptable, long-lasting, and dependable, concrete, which is made of cement, aggregates, water, and additives, is the building material that is used the most worldwide. After water, which requires a lot of Portland cement, concrete is the second most commonly used material. The production of Ordinary Portland Cement (OPC) releases CO<sub>2</sub> into the atmosphere, wreaking havoc on the environment. Mining also causes irreversible damage to nature. In 1994, carbon emissions from cement production were estimated to be 307 MtC. As a result, it is urgent to find

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Mahi, Md Saniul Haque, Md. Hasibul Khan, Abhijit Nath Abhi, Md. Foysal Sheik, and Md. Kamal Hossen. "Magnesium Cements as Sustainable Alternatives to Portland Cement: Carbonation Mechanisms, Mechanical Performance, and Environmental Benefits." Current Problems in Research 1, no. 1 (2025): 67–80. https://doi.org/10.70028/cpir.v1i1.37.

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The construction industry remains one of the major CO₂ emission sources globally because producing Portland cement contributes to about eight percent of total emissions. Sustainable alternatives need development to address climate change effects because limestone calcination produces substantial CO₂ emissions at high energy usage levels. Four types of magnesium cements which include Reactive Magnesia Cement (RMC) Magnesium Phosphate Cement (MPC) Magnesium Oxychloride Cement (MOC) and Magnesium Oxysulfate Cement (MOS) have proven viable alternatives due to their natural carbonation capacity tha

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Garces-Vargas, Juan Francisco, Yosvany Díaz-Cardenas, and Jose Fernando Martirena Hernandez. "Evaluation of the Durability of Concrete with the Use of Calcined Clays and Limestone in Salinas, Ecuador." Minerals 14, no. 5 (2024): 460. http://dx.doi.org/10.3390/min14050460.

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This study aims at the evaluation of different formulations of concrete made with calcined clays and limestone (LC3 cement) exposed to aggressive environments. The study includes the evaluation of fresh and hardened properties and a comprehensive evaluation of durability over 24 months. The inclusion of calcined clays in cement increases the specific surface area of the cements, and thus the water demand. However, the high reactivity of calcined clays compared to any other pozzolan, and the synergy that occurs with limestones, enables the use of cements with very low clinker content that achie

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.GURUPRASAD, M. "Comparative Experimental Study on Ordinary Portland Cement and Portland Pozzolana Cement in M35 Concrete and Performance Evaluation of Fly Ash-Based Cement Bricks." International Scientific Journal of Engineering and Management 04, no. 06 (2025): 1–9. https://doi.org/10.55041/isjem04558.

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ABSTRACT The construction sector's rapid growth has significantly increased the demand for sustainable and high-performance building materials. Cement, a primary construction binder, contributes approximately 5–8% of global CO₂ emissions. To address this environmental challenge, this study investigates the mechanical performance and environmental viability of Ordinary Portland Cement (OPC) and Portland Pozzolana Cement (PPC), alongside the fabrication and testing of fly ash-based cement bricks. OPC and PPC concretes were cast with M35 design mix, and their compressive strengths were evaluated

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Ferreira, Andréa Vidal, Ariete Righi, Fernando Gabriel Silva Araújo, Denise Crocce Romano Espinosa, and Jorge Alberto Soares Tenório. "Applications of the Rietveld method to quantify the crystalline phases of Portland cement clinker doped with nickel and chromium." Powder Diffraction 23, S1 (2008): S42—S45. http://dx.doi.org/10.1154/1.2903487.

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The effects of chromium or nickel oxide additions on the composition of Portland clinker were investigated by X-ray powder diffraction associated with pattern analysis by the Rietveld method. The co-processing of industrial waste in Portland cement plants is an alternative solution to the problem of final disposal of hazardous waste. Industrial waste containing chromium or nickel is hazardous and is difficult to dispose of. It was observed that in concentrations up to 1% in mass, the chromium or nickel oxide additions do not cause significant alterations in Portland clinker composition.

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Khadzhiev, Azamat, and Farrukh Atabaev. "Influence of silica-containing additives on physical and mechanical properties of Portland Cement Co Ltd “Karakalpaksement”." E3S Web of Conferences 401 (2023): 05051. http://dx.doi.org/10.1051/e3sconf/202340105051.

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The article is devoted to the study of the effect of theKhojakulsandstone deposit of Karakalpakstan on the physical and mechanical properties of Portland cement based on clinker containing unbound calcium sulfate.

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Sreenath, L. "Assessment of Concrete Strength Using Inexpensive Locally Available Materials -Flyash and Microfine Barites in Place of Concrete in Application of Building, Dam, Road Etc." INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 08, no. 10 (2024): 1–9. http://dx.doi.org/10.55041/ijsrem37907.

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Concrete is the most versatile material for all types of construction works and has been used for innumerable construction works either, as plain concrete or as reinforced cement concrete or as precise concrete or prestressed concrete or in many other forms. Except water, no other material is being used in such large quantities About 12,000 million tones of concrete is used globally. The various ingredients of concrete are Cement, Water, Fine Aggregate and Coarse Aggregate. Ordinary Portland Cement (OPC) is the chief constituent of concrete. The production of Portland cement contributes about

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Fridrichová, Marcela, Jan Gemrich, Jana Stachová, and Radek Magrla. "Reduction of CO₂ Emissions at Firing of Binders Type Portland Cement." Advanced Materials Research 897 (February 2014): 25–29. http://dx.doi.org/10.4028/www.scientific.net/amr.897.25.

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Presented article deals with burn of raw admixtures with low content of carbon component for Portland cement burn. Fluidized ash is used as substitution of carbon component. At burnt model cements there are tested basic technological properties and it is observed hydrating process.

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Iskandarova, M. I., F. B. Atabaev, and A. Sh Khadzhiev. "Utilization of Natural Silicate Rocks to Reduce the Carbon Footprint in the Cement Industry." Kompleksnoe Ispolzovanie Mineralnogo Syra = Complex Use of Mineral Resources 338, no. 3 (2025): 40–50. https://doi.org/10.31643/2026/6445.27.

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Portland cement production is associated with high energy consumption and CO₂ emissions, highlighting the need for alternative raw materials to improve environmental sustainability. Research findings indicate that porphyrite, a natural silicate rock, exhibits pozzolanic and hydraulic activity, making it a promising additive in composite cement production. In this study, the physicochemical properties and hydration processes of porphyrite-modified Portland cement were analyzed using X-ray diffraction (XRD), differential thermal analysis (DSC), and Fourier-transform infrared spectroscopy (FTIR).

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Gumeniuk, Alexander N., Irina S. Polyanskikh, Semen M. Petrunin, Filipp E. Shevchenko, and Grigory N. Pervushin. "Multifunctional layered composite material used for construction purposes." Vestnik MGSU, no. 6 (June 2021): 688–97. http://dx.doi.org/10.22227/1997-0935.2021.6.688-697.

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Introduction. The adjustability of electrical properties of materials, that have hydraulic setting characteristics, has been studied over the last decades. It is emphasized that any change in electrical properties, triggered by various additives, causes negative side effects, including low corrosive resistance and modified physical and mechanical characteristics. The purpose of this research is to design a multifunctional layered material that features localized electrical conductivity. The objective is to track the influence of modifiers, capable of regulating electrical properties. Mat

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Paredes-Sánchez, José Pablo, Oscar Jaime Restrepo-Baena, Beatriz Alvarez Rodriguez, Adriana Marcela Osorio-Correa, and Gloria Restrepo. "Using waste energy from the Organic Rankine Cycle cogeneration in the Portland cement industry." DYNA 82, no. 194 (2015): 15–20. http://dx.doi.org/10.15446/dyna.v82n194.44028.

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Cement production is intensive in terms of energy consumption. An analysis of the resources involved in manufacturing clinker needs a corresponding mass and energy balance. This balance may indicate the existence of residual heat flows that are not used. This paper summarizes the development of a protocol for the evaluation of a cement plant rotary kiln to implement an Organic Rankine Cycle (ORC) system for cogeneration. The results show that 19.2% of the energy preheater exhaust gas can be recovered to be used in producing 5.5 GWh/year of electricity and 23.7 GWh/year of thermal energy in the

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Jalal, Parah Salsabeel. "Portland Cement at the Crossroads: Environmental Imperatives and Pathways to Sustainable Production." IOSR Journal of Mechanical and Civil Engineering 22, no. 4 (2025): 01–10. https://doi.org/10.9790/1684-2204010110.

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The cement industry is indispensable for global infrastructure development, yet poses severe environmental challenges, accounting for 8–10% of anthropogenic CO₂ emissions, 12–15% of industrial energy use, and extensive natural resource depletion. This review systematically examines the sector’s ecological and health impacts, revealing that 40–50% of emissions stem intrinsically from clinker chemistry and kiln combustion, while co-pollutants (NOₓ, SO₂, PM) exacerbate climate change, biodiversity loss, and respiratory diseases. To address these dual crises, we synthesize emerging sustainability

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Wang, Z., S. Dehestani, S. Kakay, and Y. Sha. "Experimental investigation on the mechanical and chemical properties of lightweight aggregate concrete with CO₂ curing." IOP Conference Series: Materials Science and Engineering 1201, no. 1 (2021): 012051. http://dx.doi.org/10.1088/1757-899x/1201/1/012051.

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Abstract In the cement and concrete industry, enormous amounts of Carbon Dioxide (CO2) are emitted during their production processes. Carbon dioxide emission significantly contributes to the global climate change, which has been one of the biggest challenges of our times. Some novel solutions have been proposed for CO2 capture and storage, as well as reducing CO2 emission in concrete production. Carbonation curing is an effective alternative for conventional water curing for concrete. It can store CO2 in the hardened concrete and meanwhile improve early mechanical properties of concrete. Parti

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Yoon, H. N., Joonho Seo, Seonhyeok Kim, H. K. Lee, and Solmoi Park. "Characterization of blast furnace slag-blended Portland cement for immobilization of Co." Cement and Concrete Research 134 (August 2020): 106089. http://dx.doi.org/10.1016/j.cemconres.2020.106089.

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Lauermannová, Anna-Marie, Ondřej Jankovský, Adéla Jiříčková, et al. "MOC Composites for Construction: Improvement in Water Resistance by Addition of Nanodopants and Polyphenol." Polymers 15, no. 21 (2023): 4300. http://dx.doi.org/10.3390/polym15214300.

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The topic of modification of magnesium oxychloride cement (MOC) using specific functional additives is very much pronounced in the research of alternative building materials. This study deals with the co-doping of MOC by 1D and 2D carbon nanomaterials in order to improve its mechanical properties while using tannic acid (TA) as a surfactant. Furthermore, the effect of TA on MOC also improves its water resistance. As a filler, three size fractions of standard quartz sand are used. The proposed types of MOC-based composites show promising results considering their mechanical, macro- and microstr

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Siddharth Shah, Trupti Parmar,. "A Comparative Study of Energy Consumption, Global Warming Potential and Impact Categories of Four Different Blends of Concrete Using Cradle to Gate Life Cycle Assessment." Mathematical Statistician and Engineering Applications 71, no. 4 (2022): 10611–30. http://dx.doi.org/10.17762/msea.v71i4.1954.

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The present study is a comparison of four different concrete mixes using ‘cradle to gate’ life cycle assessment. The aim is to obtain environmental impact, focusing mainly on criteria pollutants (CO, lead (Pb), PM10, NOx, SO2, and volatile organic compounds), global warming potential, energy consumption, and impact categories like human health, ecosystem quality, and resources. Each concrete mix design has different binder combination. CONOPC contains ordinary Portland cement (OPC) as a binder. CONPPC has 27% Fly ash + 73% OPC while CON PSC has 47% ground granulated blast furnace slag (GGBS) +

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Hela, Rudolf, and Lenka Bodnarova. "Development of High-Volume High Temperature Fly Ash Concrete (HVFAC)." Applied Mechanics and Materials 752-753 (April 2015): 544–51. http://dx.doi.org/10.4028/www.scientific.net/amm.752-753.544.

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To ensure sustainable concrete building industry it is necessary to decrease consumption of natural resources for manufacture of concrete and reduce content of CO2 produced during production of cement. This approach has not only ecological impact on future activities but it can also considerably reduce cost of concrete. In the Czech Republic, about 6.5 million tons of high quality fly ash is produced during classic high temperature combustion of anthracite or brown coal for production of electric energy. Fly ash produced in such way has high content of SiO2 and low content of CaO, and it is ra

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Ye, Junhao, Songhui Liu, Jingrui Fang, Haibo Zhang, Jianping Zhu, and Xuemao Guan. "Synthesis of Aragonite Whiskers by Co-Carbonation of Waste Magnesia Slag and Magnesium Sulfate: Enhancing Microstructure and Mechanical Properties of Portland Cement Paste." Buildings 13, no. 11 (2023): 2888. http://dx.doi.org/10.3390/buildings13112888.

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This study focused on the synthesis of aragonite whiskers through a synergistic wet carbonation technology utilizing waste magnesia slag (MS) and magnesium sulfate (MgSO4), aiming to improve the microstructure and mechanical properties of ordinary Portland cement (OPC) paste. The influence of MgSO4 concentration on the wet carbonation process, phase composition, and microstructure of MS was investigated. Furthermore, the effect of incorporating carbonated MS (C-MS) on the mechanical properties and microstructure of Portland cement paste was evaluated. Results showed that appropriate MgSO4 conc

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Lailatul Rohmah, Rizka. "Sustainable Infrastructure Development in Indonesia: A Quantitative Evaluation of CO₂ Emission Reduction from Fly Ash-Cement Substitution in Ready-Mix Concrete." E3S Web of Conferences 530 (2024): 04005. http://dx.doi.org/10.1051/e3sconf/202453004005.

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The construction industry is a major contributor to global CO2 emissions, particularly through Portland cement production. In Indonesia, the utilization of fly ash in ready-mix concrete presents a promising approach to sustainable construction. This strategy aligns infrastructure development with environmental objectives by potentially reducing emissions and supporting global climate change mitigation efforts. This study investigates the environmental impact of incorporating fly ash into ready-mix concrete employed for the Yogyakarta-Bawen toll road project, with a specific focus on CO2 emissi

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Shi, Fan, Dehong Jiang, Junrong Ji, Jinsheng Yan, and Huxing Chen. "Effects of Alkali on Water Soluble Hexavalent Chromium in Ordinary Portland Cement." International Journal of Environmental Research and Public Health 19, no. 8 (2022): 4811. http://dx.doi.org/10.3390/ijerph19084811.

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Due to the toxicity and mobility of chromium, the disposal of chromium-containing waste is a pressing issue. Co-processing of chromium-containing waste in a cement kiln is currently one of the most effective methods. However, the presence of water-soluble hexavalent chromium (Cr(VI)) in cement limits the use of this method. In this study, Na2CO3 was used to simulate alkali in industrial raw materials to investigate the pattern of influence of alkali content on water-soluble hexavalent chromium. The mechanisms associated with the oxidation and dissolution of chromium were investigated using X-r

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Ghayeb, H. H., H. A. Razak, N. H. R. Sulong, et al. "Predicting the Mechanical Properties of Concrete Using Intelligent Techniques to Reduce CO₂ Emissions." Materiales de Construcción 69, no. 334 (2019): 190. http://dx.doi.org/10.3989/mc.2019.07018.

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The contribution to global CO2 emissions from concrete production is increasing. In this paper, the effect of concrete mix constituents on the properties of concrete and CO2 emissions was investigated. The tested materials used 47 mixtures, consisting of ordinary Portland cement (OPC) type I, coarse aggregate, river sand and chemical admixtures. Response surface methodology (RSM) and particle swarm optimisation (PSO) algorithms were employed to evaluate the mix constituents at different levels simultaneously. Quadratic and line models were produced to fit the experimental results. Based on the

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Schindler, Anton K., Steve R. Duke, and W. Braxton Galloway. "Co-processing of end-of-life wind turbine blades in portland cement production." Waste Management 182 (June 2024): 207–14. http://dx.doi.org/10.1016/j.wasman.2024.04.033.

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Fridrichová, Marcela, Karel Kulísek, Oldřich Hoffmann, Karel Dvořák, and Radek Magrla. "Utilisation of Fluidised Fly Ash for Reduction of CO₂ Emissions at Portland Cement Production." Advanced Materials Research 1054 (October 2014): 168–72. http://dx.doi.org/10.4028/www.scientific.net/amr.1054.168.

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The article deals with preparation of Portland cements from raw material powder with reduced carbonated component. This component is replaced with fluidised fly ash. With prepared model cements tests of basic technological properties were carried out.

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Jiang, Bo. "The Transformation of Green Rusts on the Surface of Portland Cement Hydration Materials." Key Engineering Materials 905 (January 4, 2022): 344–49. http://dx.doi.org/10.4028/www.scientific.net/kem.905.344.

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Ordinary Portland cement (OPC) is widely used building material, and its hydration products can be recycling as low-cost absorbents. The loading of iron oxide is helpful to further improve their adsorption performance. In view of the fact that green rusts are frequently occurrence intermediate products in the co-precipitation of iron salt and prone to be oxidized into stable iron minerals. This study simulated co-precipitation to carry out iron-modification on hydration OPC. The results demonstrate that as the carrier materials, hydration OPC behaves excellent affinity with green rusts. Under

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UMETSU, Mamiko, Daisuke KUROKAWA, Taiichiro MORI, and Etsuo SAKAI. "CO<sub>2</sub> ABSORPTION AND PRODUCTS IN CARBONATED PORTLAND CEMENTS." Cement Science and Concrete Technology 75, no. 1 (2022): 34–41. http://dx.doi.org/10.14250/cement.75.34.

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Dong, Wanying, Weiyang Gu, Qiwei Zhan, Anhui Wang, and Juanlan Zhou. "Study on the Property and Mechanism of Low Content Cement-Industrial Waste Residue Silt Solidification." Science of Advanced Materials 14, no. 12 (2022): 1881–92. http://dx.doi.org/10.1166/sam.2022.4388.

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In this paper, industrial waste residue was used as the main cementing material instead of Portland cement to solidify the silt, which was in contrast with the single cement solidified silt. Firstly, the mechanical properties and influence laws of single cement and different mix ratio cement-industrial waste solidified silt were carried out. Secondly, the optimal mix ratio of solidified silt was obtained as: Portland cement: blast furnace slag: phosphogypsum = 3:6:1. Compared with the solidified silt with single cement, the compressive strength of the solidified silt with composite curing agen

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Astuti, Pinta, Muhammad Sakti Isnaini, Sachio Dwi Ammar, and Adhitya Yoga Purnama. "Strength characteristic and life cycle cost of sustainable bio-patch repair geopolymer mortar using rice husk ash as an alternative silica and alumina source." BIO Web of Conferences 144 (2024): 06003. http://dx.doi.org/10.1051/bioconf/202414406003.

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Rapid development in construction has increased cement use, raising CO₂ emissions. Geopolymers offer an eco-friendly alternative, reducing reliance on cement. This study examines rice husk ash (RHA), a pozzolanic material, as a binder. Three alkali activator variations (AA40%, AA45%, AA50%) were tested for mechanical properties, focusing on compressive strength. The mix design was optimized and cured at 70°C and room temperature. The AA40% variation showed the highest compressive strength of 8.14 MPa. RHA-based geopolymer mortar supports UN SDGs 9, 12, and 13, showing a significantly lower 30-

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Krispel, Stefan, Stefanie Klackl, and Mario Mauhart. "Use of air-cooled blast furnace slag in cement production – a contribution to the reduction of CO₂ emissions." Cement Wapno Beton 29, no. 5 (2025): 394–408. https://doi.org/10.32047/cwb.2024.29.5.4.

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Using substitute raw materials alongside the traditionally used limestone, clay, and marl to produce Portland cement clinker saves natural resources and achieves the recycling of waste in a new value-added process. Additionally, certain substitute raw materials also have the great advantage that they release no or very little CO2 during the burning process. This represents a significant contribution to achieving climate neutrality. The aim of this research project was to evaluate the recyclability of air-cooled blast furnace slag [ACBFS] as a substitute raw material in the clinker burning proc

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Punmathari, T., M. Rachakornk, A. Imyim, and M. Wecharatan. "Co-processing of Grinding Sludge as Alternative Raw Material in Portland Cement Clinker Production." Journal of Applied Sciences 10, no. 15 (2010): 1525–35. http://dx.doi.org/10.3923/jas.2010.1525.1535.

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Pellegrini, F., C. D. Hills, P. J. Carey, K. H. Gardner, and A. Maries. "Sorption and desorption of Cd, Co, Cu, Ni and Zn from carbonated Portland cement." Advances in Applied Ceramics 105, no. 4 (2006): 185–90. http://dx.doi.org/10.1179/174367606x120188.

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Rivera, Alexander Oliva, Katarina Malaga, and Urs Mueller. "Accelerated Carbonation of Binders Containing SCM at High CO₂ Concentration." Nordic Concrete Research 69, no. 2 (2023): 1–10. http://dx.doi.org/10.2478/ncr-2023-0004.

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Abstract Accelerated carbonation of recycled concrete aggregates (RCA) could be an efficient way to reduce the carbon footprint. High CO2-concentration under optimal relative humidity could accelerate the CO2 binding capacity of the hydrated cement paste in the RCA. The latter is the topic of this paper. The study looks into the forced carbonation of crushed cement pastes as a basis to understand the CO2 uptake in relation to various binders containing supplementary cementitious materials (SCM) such as fly ash (FA) and ground granulated blast furnace slag (GGBS). Samples include three cement p

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Lou, Baowen, and Torbjørn Vrålstad. "Strength Development of Metakaolin-Based Alkali-Activated Cement." Applied Sciences 13, no. 24 (2023): 13062. http://dx.doi.org/10.3390/app132413062.

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Alkali-activated materials, sometimes called geopolymers, can be used as alternative cementitious materials to conventional Portland cement. Currently, there is a significant interest in these materials due to their low CO2 footprint. The typical applications of alkali-activated materials are within civil engineering; however, potential applications as well cementing material within the oil and gas industry are also receiving emerging interest. This paper presents a systematic study of the compressive strength development from 1 to 28 days for metakaolin-based alkali-activated cement. The resu

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Gomes, Beatriz Wanderley, Normando Perazzo Barbosa, Aline Figueirêdo da Nóbrega, Leane Priscilla Bonfim Sales, and Diego de Paiva Bezerra. "Influence of the composition of alkali-activated lime-metakaolin mortars on compressive strength, cost, and CO₂ emission." MATEC Web of Conferences 403 (2024): 02008. http://dx.doi.org/10.1051/matecconf/202440302008.

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The environmental impact associated with Portland cement production makes it necessary to explore alternatives that minimize the polluting effects of this industrial activity. A promising approach is the development of alkali-activated mortars composed of lime and pozzolan. Therefore, the objective of this study was to analyze the influence of components on the compressive strength of alkali-activated lime-metakaolin mortars. The mortar composition was defined in three ways: the first way followed the guidelines of the Brazilian standard NBR 5751 and used the specific masses of the materials;

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Goo, Ja-Young, Bong-Ju Kim, Myunggoo Kang, Jongtae Jeong, Ho Young Jo, and Jang-Soon Kwon. "Leaching Behavior of Cesium, Strontium, Cobalt, and Europium from Immobilized Cement Matrix." Applied Sciences 11, no. 18 (2021): 8418. http://dx.doi.org/10.3390/app11188418.

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Numerous low-level and intermediate-level radioactive wastes are generated from the decommissioning processes of nuclear power plants; these wastes are immobilized to prevent the release of radionuclides under disposal conditions. In this study, we investigated the leaching behavior of Cs, Sr, Co, and Eu, which are common in immobilized decommissioning wastes. Ordinary Portland cement (OPC) was used as an immobilization agent. During the test, leaching of the nuclides occurred in the order of Cs, Sr, Co, and Eu and decreased over time. The results showed that 41.4% of the total Cs leached over

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Asif, Farooq, and Misba Danish Mr. "Use of Rice Husk Ash as an Admixture to Substitute of Portland Cement in Concrete." International Journal of Trend in Scientific Research and Development 2, no. 5 (2018): 384–402. https://doi.org/10.31142/ijtsrd15832.

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The increase in rate of construction increases the rate demand of Portland cement now a days. Due to urbanization it is estimated that the production of cement increase up to 200 million ton in 2015. Being development of nation on one side, the side effect grows in form of global warming. Increased rate of industrialization leads to Production of toxic gases like CO, CO2, and other hazardous gases leads to ozone depletion which is main cause of global warming and a threat to environment. CO2 gas contributes in relation to 63.33 of global warming. The factories which manufacture cement are resp

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Pham, Son Tung, and William Prince. "Effects of the Type of Cement and the Concentration of CO₂ on the Carbonation Rate of Portland Mortars." Applied Mechanics and Materials 556-562 (May 2014): 965–68. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.965.

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The objective of this study was to examine the influences of the type of cement and the CO2 concentration on the carbonation progress of cement materials. Thermogravimetric analysis were used to follow mineralogical changes of standard CEM I and CEM II mortars which were submitted to an accelerated carbonation at 20% and 50% CO2, 20°C and 65% relative humidity. The results indicated that the carbonation of portlandite is complete in the case of CEM II mortar while there is a persistence of residual portlandite in the case of CEM I mortar. In other words, the carbonation rate of CEM I mortar is

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Isaia, G. C., and A. L. G. Gastaldini. "Concrete sustainability with very high amount of fly ash and slag." Revista IBRACON de Estruturas e Materiais 2, no. 3 (2009): 244–53. http://dx.doi.org/10.1590/s1983-41952009000300003.

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This article approaches concrete mix designs where cement is replaced by high amounts of slag and fly ash, with the purpose of turning it into a more sustainable construction material, that is, an authentic green concrete. Mix proportions with fly ash, ground-blasted furnace slag, and Portland cement were studied in binary and ternary mixtures for compressive strength levels of 40 MPa and 55 MPa. The replacement of cement with mineral additions ranged from 50% to 90% in mass. Mean decreases of 55% in the energy consumption, 78% in the CO² emissions, and 5% in the cost of the concrete m³, plus

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Pravina Kamini G., Kong Fah Tee, Jolius Gimbun, and Siew Choo Chin. "Biochar in cementitious material—A review on physical, chemical, mechanical, and durability properties." AIMS Materials Science 10, no. 3 (2023): 405–25. http://dx.doi.org/10.3934/matersci.2023022.

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<abstract> <p>Ordinary Portland Cement (OPC) is a crucial building component and a valuable strategic resource. The production of cement accounts for 5% to 10% of global carbon dioxide (CO<sub>2</sub>) emissions. Over the years, many researchers have been studying ways to reduce the amount of CO<sub>2</sub> in the atmosphere caused by cement production. Due to its properties, biochar is found to be an interesting material to be utilised in the construction industry due to its effectiveness in CO<sub>2</sub> sequestration. Biochar is a solid resid

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Akintayo, Busola Dorcas, Oludolapo Akanni Olanrewaju, and Oludolapo Ibrahim Olanrewaju. "Life Cycle Assessment of Ordinary Portland Cement Production in South Africa: Mid-Point and End-Point Approaches." Sustainability 16, no. 7 (2024): 3001. http://dx.doi.org/10.3390/su16073001.

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Several environmental impacts are associated with cement production, ranging from high greenhouse gas (GHG) levels to high energy consumption (fossil fuel and electricity) to high resource usage. Due to the growing demand for cement in the industry and limited studies in South Africa, it is essential to evaluate the environmental impact of cement production in the South African context. In this study, an analysis of the production model of South African (SA) cement plants was carried out to quantify its impacts and decipher how they consequently affect lives, resources, and the ecosystem. This

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Yan, Xiao, Zizheng Sun, Shucai Li, Weimin Yang, and Yiming Zhang. "Evaluation of Effectiveness of CO2 Sequestration Using Portland Cement in Geological Reservoir Based on Unified Pipe-network Method." Energies 13, no. 2 (2020): 387. http://dx.doi.org/10.3390/en13020387.

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In this paper, we first recapitulate some basic notions of the CO     2    sequestration and numerical model. Next, a mixed model is employed into the CO     2    sequestration framework, for simulating CO     2    geological sequestration processes. The last part of the paper makes extensions to evaluation of the effectiveness of CO     2    sequestration with respect to atmospher

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Bădănoiu, Alina Ioana, Ana-Maria Albu, Georgeta Voicu, and Cristian Andi Nicolae. "Influence of Dicyclopentadiene Co-Polymers on the Hardening Processes and Properties of Portland Cement Composites." Journal of Inorganic and Organometallic Polymers and Materials 23, no. 3 (2012): 499–509. http://dx.doi.org/10.1007/s10904-012-9806-5.

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de Souza Oliveira, Marcel Demarco, Sara de Carvalho Zago, and Fernando Vernilli Junior. "Clinker-Free Cement: A New Reality." Applied Sciences 14, no. 24 (2024): 11898. https://doi.org/10.3390/app142411898.

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The search for binders with a lower environmental impact has grown, especially for those with reduced clinker content or even for formulations not used due to the high CO2 emissions associated with their production. In this context, the steel industry, which generates a significant amount of waste and co-products, especially steel aggregates, such as blast furnace slag and basic oxygen slag, can be a source of raw materials for cement plants. For this reason, in search of an innovative alternative with low environmental impact, in this work, a clinker-free cement was developed by mixing waste

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Klyuev, S. V., S. V. Zolotareva, N. A. Ayubov, R. S. Fediuk, and Yu L. Liseitsev. "Composite binders based on technogenic raw materials." Russian Automobile and Highway Industry Journal 21, no. 1 (2024): 134–48. http://dx.doi.org/10.26518/2071-7296-2024-21-1-134-148.

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Introduction. Technological features of road construction require compliance with the requirements for road building materials in terms of physical and mechanical properties and performance characteristics. Control of structure formation processes in cement composite systems can be carried out by various methods and approaches, including choosing the optimal composition, adding special additives, regulating hydration conditions and using special processing methods. This makes it possible to improve the properties and characteristics of conglomerate materials, as well as eliminate or slow down

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Noah, lerman, Aronofsky Lucas, and Aghili Benjamin. "Investigating the microstructure and mechanical properties of metakaolin-based polypropylene fiber-reinforced geopolymer concrete using different monomer ratios." Journal of Civil Engineering and Materials Application 5, no. 3 (2021): 115–23. https://doi.org/10.22034/jcema.2021.302140.1062.

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Researchers have focused on the fabrication and implementation of concrete that has optimal characteristics, logical price with minimum harmful impacts on the environment. For this purpose, the current project was conducted. Geopolymer cement, due to its high durability, insignificant energy consumption, least CO<sub>2</sub> emissions, acceptable investment cost, and specific characteristics, is accounted as a new class of mineral binders which is different from such binders as Portland cement. In this research, the geopolymer concrete was made using metakaolin precursor containing 0.3, 0.5, a

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Hassannezhad, Kosar, Yasemin Akyol, Mehmet Can Dursun, Cleva W. Ow-Yang, and Mehmet Ali Gulgun. "Effect of Metakaolin and Lime on Strength Development of Blended Cement Paste." Construction Materials 2, no. 4 (2022): 297–313. http://dx.doi.org/10.3390/constrmater2040019.

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To develop a more reactive pozzolan for supplementary cementitious materials (SCMs), the co-calcination of kaolinite and limestone was investigated for its contribution to hydration of blended cement. Kaolinite (with ~50 wt% quartz impurity) was calcined at 700·°C, and a mixture of kaolinite and limestone was calcined at 800 °C. These activated SCMs were added to ordinary Portland cement (OPC), replacing ca. 30 wt% of the OPC. The compressive strength of these blended cement paste samples was measured after 28 and 90 days, while the hydration products and microstructural development in these b

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