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08/06/2026, 16:00
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Jason Ideker (Oregon State University), Matthew Adams (New Jersey Institute of Technology)09/06/2026, 09:00
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Karen Scrivener09/06/2026, 09:10
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Hervé Fryda (IMERYS)09/06/2026, 09:30
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Dominika Madej (AGH University of Krakow)09/06/2026, 10:00
Calcium aluminate cements (CACs) are well known for their rapid setting characteristics and refractory performance, owing to their significant early strength gain and excellent thermal stability. The properties of CACs vary based on their alumina content. Global demand for CACs has shown consistent growth in recent years. However, this projected rise in production is likely to intensify the...
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Bela Kumar (Imerys Technology Center Lyon)09/06/2026, 10:20
Addressing the significant CO₂ emissions from calcium aluminate cement (CAC) production is a critical challenge for the building and infrastructure sectors, with fossil fuels accounting for a large portion of the greenhouse gas (GHG) footprint. To tackle this, we initiated the PRECIZE project, a strategic collaboration with Air Liquide, LGC, and CEMHTI. Funded by the French state as part of...
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Prof. Friedlinde Götz-Neunhoeffer (Mineralogy, Friedrich-Alexander-University Erlangen Nürnberg)09/06/2026, 11:00
The hydration reaction and transformation behavior of a calcium aluminate cement (CAC) mixed with reactive calcium carbonate (Cc) were investigated at different temperatures. By introducing CO32- into the pore solution of the hydrating CAC through calcite dissolution, a promising way was investigated to avoid or limit the metastable hydrate phases (CAH10, C2AHx) that typically occur during the...
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Julian Wolf09/06/2026, 11:30
Mayenite based cements allow for reduction of the global warming potential of dry-mix recipes compared to typical ternary binder system. This is due to the fact that you can achieve the same early age properties with this technology at a lower total binder content of the recipe. Typically, these formulations are poor in Portland cement and calcium sulfates are added to maximize the early...
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Marijana Serdar (University of Zagreb Faculty of Civil Engineering)09/06/2026, 11:50
One of the widely accepted approaches to decarbonizing the cement sector is the partial replacement of clinker with supplementary cementitious materials (SCM), such as slag, limestone, fly ash. Previous studies have shown that slag helps to inhibit the conversion of calcium aluminate cement. Due to the problems with the availability and cost of slag, there is a need to investigate other...
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Dr Julian Goergens09/06/2026, 13:30
Quantification of the metastable hydrate phases CAH10 and C2AHx is essential in understanding and evaluating the conversion progress of CAC pastes for scientific and industrial research. Mainly XRD or TGA are used for phase quantification, whereas XRD proved to be more precise. While structural data exist for CAH10, they do not yet exist for C2AHx, as the proportion of interlayer H2O in the...
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Dr Andreas Koehler (Almatis GmbH)09/06/2026, 13:50
Calcium aluminate cement is widely used as a binder in refractory castables because it enables shaping complex geometries and allows the material to withstand extreme temperatures. Their typical manufacturing process consists of mixing, curing, demolding, drying and firing. In modern dense and highly dispersed castables with very low permeability, water remains in the castable body during the...
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Jean Michel Auvray (IMERYS)09/06/2026, 14:10
High performance (HP) refractory concrete rely mainly on sophisticated, highly densified matrix systems with a high charge of pore-filling alumina and silica micro-powders, deflocculated with efficient polymer admixtures, and bonded with 70% Al2O3 containing calcium aluminate. However, these HP concretes experience a challenge concerning the safe and rapid removal of free pore and hydrate...
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Lukas Deffner09/06/2026, 14:30
In technical applications, the hydration kinetics of calcium aluminate cement (CAC) are commonly modified by chemical admixtures. In this phenomenological study, we investigate the influence of five strong acids - HCl, HNO₃, HClO₄, H₂SO₄, and H₃PO₄ - on CAC hydration under two conditions: dilute suspensions (w/s = 100) and cement pastes (w/s = 0.3). In dilute systems, in-situ pH and...
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Dr Joerg Nehring (BASF Construction Additives GmbH)09/06/2026, 14:50
Modern dry mortar formulations require precise hydration control to address performance, sustainability, and supply chain considerations. The OPC–CAC system is a ternary binder composed of Ordinary Portland Cement (OPC), Calcium Aluminate Cement (CAC), and a calcium sulfate source such as anhydrite or hemihydrate. This combination is commonly used in applications including self-leveling...
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Özge Demirdogan (Sabanci Technology Center GmbH - Middle East Technical University)09/06/2026, 15:35
In this study, the hydration behavior of ternary binder systems composed of calcium aluminate cement (CAC), ordinary Portland cement (OPC), and different types of calcium sulfate sources (C$) was investigated under variable curing temperatures. As calcium sulfate sources, natural gypsum and phosphogypsum, a by-product of the phosphate fertilizer industry, were compared to evaluate their...
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Mr Ahmet Selim Engin, Ms Melike Sucu, Sibel Sönmez (Çimsa Çimento)09/06/2026, 15:35
Additive manufacturing (3D printing) continues to advance as an alternative to conventional construction techniques due to its numerous technical and operational advantages. This study aims to develop a mortar system incorporating Calcium Aluminate Cement (CAC), White Portland Cement (WPC), and microencapsulated Phase Change Materials (mPCMs) for 3D-printing applications. The inclusion of...
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Mr Bruno Espinosa (-)09/06/2026, 15:35
During decades, calcium cements had been studied as a simple case to study hydration of more complex multiphase cements such as Portland cement, due to its very quick hydration and apparent simple chemistry. The strong dependence of temperature on mechanical strengths development was quickly noticed with unexpected regression of mechanical strength with time when initial hydration proceeds at...
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Renata Boris (PhD)09/06/2026, 15:40
Abstract: Hydration phenomena of a commercial white calcium aluminate cement (CAC (Górkal 70); Al2O3 – 69–72%) at 20°C was modified by adding silica nanoparticles addition in varying amounts and additives in the context of using CACs in the aspiration to achieve climate neutrality and the goal of net zero. The hydration process of CAC modified with silica sol (SS) was tracked by heat flow...
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Dr Yasmine Kaci (Ecocem)09/06/2026, 15:40
Ternary binders are frequently used in fast-setting applications, such as rapid tile adhesives, where high early-age performance is required. In this context, the incorporation of ground granulated blast furnace slag (GGBS) offers an effective pathway to reduce the carbon footprint of construction materials, while maintaining reactivity and durability.
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This research focuses on evaluating the... -
Tillmann Schramm (Mineralogy, Friedrich-Alexander-University Erlangen Nürnberg)09/06/2026, 15:40
The study is focused on how the hydration of a refractory binder system consisting of commercial white CAC and tabular alumina is changed by the addition of different silica fumes. Four silica fumes, two each of identical quality grade, but obtained from different batches, were selected and characterized by their physical and chemical properties (XRF, laser granulometry, BET). Then they were...
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Elsa Qoku (Institue for Building Materials Research (ibac))09/06/2026, 16:10
With the cement technology moving towards low embodied CO2 cements, optimization of ternary binders composed of Portland cement (PC)-Calcium aluminate cement (CAC) and calcium sulfate (C$) that meet the sustainability need becomes relevant. Previous reports demonstrate that replacement of CAC by slag, silica fume or fly ash hinders the conversion process. However, the incorporation of SCMs in...
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Pauline Rost (Friedrich-Alexander-Universität Erlangen-Nürnberg)09/06/2026, 16:40
Ternary mixtures composed of calcium aluminate cement (CAC), Portland cement (OPC) and calcium sulfates (CS) are commonly used as tile adhesives, self-levelling compounds, repair cements or technical mortars. Different setting and hardening times as well as expansion, shrinkage and early strength can be easily controlled by varying the proportions of the three components. Many studies have...
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Hari Priya Ravindran (PSI, EPFL)09/06/2026, 17:00
Ettringite (AFt) is a key phase influencing the early-stage hydration and rheology of calcium aluminate, calcium sulfoaluminate and blended cements. However, a quantitative and mechanistic understanding of early-stage hydration - specifically nucleation and growth- remains unclear, which is fundamental for optimizing the material performance.
In this study, we have developed the synthesis...
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Sarra El Housseini (Imerys) (Imerys)10/06/2026, 09:00
In an increasingly competitive market, the precast industry is constantly looking for ways to ensure a quick turnaround and rapid delivery with an acceptable cost and without harming the quality of the final concrete element. One of the most common levers allowing to boost production cycles is to adopt advanced curing techniques like steam curing or heat curing. These options are not...
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Özge Demirdogan (Sabanci Technology Center GmbH - Middle East Technical University)10/06/2026, 09:20
TThis study investigates the hydration behavior of quaternary binder systems comprising calcium aluminate cement (CAC), ordinary Portland cement (OPC), calcium sulfate (C$), and various supplementary cementitious materials (SCMs) under different curing temperatures. The binder composition was fixed at CAC:OPC:C$:SCM = 53:13:24:10 by mass. SCMs, including ground granulated blast furnace slag...
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Mr Jean-Noël Bousseau (IMERYS)10/06/2026, 09:40
Cementitious foam technology, despite being known for decades, has faced limitations in widespread use due to technical challenges. The main issues include slow setting and hardening, low mechanical performance at early age, particularly in low-density foams, as well as shrinkage problems, and limited application range.
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To address these challenges, an ettringitic accelerator based on... -
Klemens Laub (IAB – Institut für Angewandte Bauforschung Weimar gGmbH)10/06/2026, 10:00
In recent years, the increasing requirements for thermal insulation in building construction and society's growing environmental awareness have led to the increased development of highly thermally insulating, recyclable cement-based mineral foams with low thermal conductivities (λ ≤ 0,035 W/(m·K)) and low dry densities (ρ ≤ 70 kg/m³). Their production and application are associated with...
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Alexandra Gerz (Calucem d.o.o)10/06/2026, 10:45
The incorporation of Calcium Aluminate Cements (CACs) into modern building chemistry products enable rapid set, fast hardening and quick drying. Apart from application demands, the CO2 footprint of the products needs to be lowered as well to minimize climate impact. One avenue to reduce CO2 is to decrease the cement content in the product formulation. The patented CAC Flex offers a solution...
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Marjorie Valix (The University of Sydney)10/06/2026, 11:15
Civil infrastructure assets such as underground pipes, manholes, access chambers, and pumping stations are frequently exposed to aggressive environments including sulphates, chlorides, and biogenic sulphuric acid. Traditional general-purpose (GP) and blended (GB) cements often lack the chemical resistance needed, leading to shorter service life and higher maintenance costs. This study...
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Neven Ukrainczyk (TU Darmstadt)10/06/2026, 11:45
The degradation of concrete due to acid attack is commonly assessed by the depth of deterioration from the original surface. This study evaluates the applicability of a simple diffusion-based model to determine the apparent diffusion coefficient (D_app), comparing it to an empirically modified square-root-of-time approach from the fib Model Code 2020. Model calibration was based on accelerated...
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Dr Reem Hoballah (INSA Toulouse)10/06/2026, 12:05
Calcium aluminate cement (CAC)-based coatings have demonstrated superior resistance to microbially-induced concrete deterioration (MICD) in wastewater infrastructures and are widely used to protect Portland cement-based concrete The key factor in the resistance of CAC lies in its chemical and microstructural nature. However, in the penalizing case of crack initiation within the underlying...
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Marjorie Valix (The University of Sydney)10/06/2026, 12:25
Concrete, protective coatings, and other construction materials deteriorate under biologically induced corrosive conditions commonly found in sewer systems. Understanding "corrosivity"—the severity of corrosion in a given environment—is essential for selecting appropriate materials, designing mitigation strategies, and estimating service life and lifecycle costs.
This study focuses on...
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Marielle Guéguen Minerbe (Université Gustave Eiffel)10/06/2026, 12:45
Urbanisation is leading to the installation of increasingly efficient wastewater treatment systems to limit discharges into the natural environment. To date, concrete biodeterioration in relation to wastewater treatment systems has been studied mainly in sewer networks, where it has been linked to biological activity in the presence of hydrogen sulphide, leading to irreversible damage....
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Buket Polat (Cimsa Cement)10/06/2026, 14:00
Reducing the clinker content in calcium aluminate cement (CAC) is crucial for improving environmental sustainability. This study investigates the partial replacement of CAC clinker with activated pumice to optimize setting time and mechanical strength. Experiments were conducted by gradually decreasing the clinker content and replacing it with varying proportions of activated pumice. The...
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Alexandre Franceschini (Imerys)10/06/2026, 14:20
Specialty binders for premium drymix products commonly consist of a “ternary” blend of calcium aluminate, calcium sulfate and Portland cement. Target performance for each application is achieved by carefully tuning the relative proportions of these constituents together as well as the type & dosage of several set regulators. Simple substitution of CEM I by a blended Portland cement to lower...
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Kimberly Kurtis (Georgia Institute of Technology), Matthew Adams (New Jersey Institute of Technology)10/06/2026, 14:40
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Kimberly Kurtis11/06/2026, 09:00
Calcium aluminate cements (CACs) are often treated as specialty binders, but recent work suggests their performance merits broader consideration. Drawing on testing funded by the U.S. Federal Highway Administration and recently published in a comprehensive report (FHWA-HRT-24-012), we compare CACs to portland cement, calcium sulfoaluminate (CSA), magnesium phosphate cements, chemically...
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Dr Tomoki Katagiri (MU MATEX Co., Ltd.)11/06/2026, 09:30
Repairing damaged flooring inside commercial freezer warehouses presents significant challenges due to the extremely low temperature conditions, often below -25°C. This study presents the development of a self-leveling, ultra-rapid hardening mortar designed specifically for subzero applications. The binder system is based on amorphous calcium aluminates (ACA), which exhibit high reactivity and...
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Barbara Benevenuti (Imerys)11/06/2026, 09:50
Abstract
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11/06/2026, 10:10
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Hamidreza Karami (Quality Control Manager, Modalal Cement Co. Kermanshah, Iran)11/06/2026, 10:30
This paper presents a mathematical model developed to investigate the thermal modeling of calcium aluminate cement (CAC). A control volume is employed to simulate the heat balance behavior in CAC blocks with dimensions of 16 cm × 4 cm × 4 cm. These blocks were exposed to a constant temperature of 1450 °C to analyze the thermal effects during times.
Figure 1- The one-dimension control...
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Ms Kelly Lau (Insight R&D)11/06/2026, 10:30
This study explores the valorization of a water-granulated platinum slag (GPS) as both a fine aggregate replacement and a supplementary cementitious material (SCM) in mortar formulations. The slag, a byproduct of platinum smelting operations, contains high amorphous content and elevated MgO and Al₂O₃ levels—making it a potential contributor to cement chemistry when properly processed.
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The GPS... -
Mr Bishwjeet Binwal (School of Chemical and Biomolecular Engineering, The University of Sydney)11/06/2026, 10:40
Concrete made from traditional Portland cement in the sewer system faces severe corrosion. This leads to deterioration of Portland cement, causing a reduction in sewer pipes and an increase in maintenance and repair costs. This research addresses a pertinent issue by evaluating three types of specialty cements: calcium aluminate cement (CAC), calcium sulphoaluminate cement (CSA), and...
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Dr Tony Pons (Université Gustave Eiffel)11/06/2026, 10:40
The biodeterioration of cementitious materials in the wastewater treatment cycle is caused by the biological acid produced by microorganisms. In the case of sewage systems in presence of H2S, sulfuric acid was produced by sulfo-oxidizing bacteria, and in the case of nitrogen pollution treatment in water treatment plants, is nitric acid produced by bacteria. The literature shows that...
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Racheal Lute (University of Texas at Austin)11/06/2026, 10:50
This study presents long-term durability findings for various rapid repair concrete systems subjected to over a decade of outdoor exposure in diverse environmental conditions. The systems evaluated include Calcium Aluminate Cement (CAC), blended CAC–Portland cement systems, and Calcium Sulfoaluminate (CSA) cement, benchmarked against conventional Portland cement concrete. Key durability...
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Marijana Serdar (University of Zagreb Faculty of Civil Engineering)11/06/2026, 11:10
The durability of calcium aluminate cement in aggressive environments is considered one of its competitive advantages. A property that is attracting additional attention in concrete research today is resistance to carbonation, as cement-based materials play a role as carbon sinks in the carbon neutrality strategy. Previous studies have shown that CAC concrete has a faster carbonation rate...
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Lucía Fernandez (universitat Politècnica de Catalunya)11/06/2026, 11:30
The long-term performance of calcium aluminate cement (CAC) in cold environments depends critically on its resistance to freeze–thaw (F–T) cycles. This study evaluates the microstructural evolution and damage mechanisms in CAC mortars exposed to repeated F–T cycling. A combined analytical approach was applied to assess both phase changes and internal degradation.
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Microstructural... -
Prof. Keisuke Takahashi (Kagawa University)11/06/2026, 11:50
The advancement of deep-sea technologies, including subsea carbon storage, offshore wind energy, and seabed resource extraction, requires durable cementitious materials capable of supporting infrastructure exposed to extreme environmental stressors. This study investigates the durability and physicochemical stability of high-alumina calcium aluminate cement (AC) pastes under in-situ deep-sea...
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Elsa Qoku, Jason Ideker (Oregon State University), Matthew Adams (New Jersey Institute of Technology)11/06/2026, 12:10
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Damla Nur Celik (GAZİ UNIVERSITY)
This study investigates the drying behavior and degree of hydration (DOH) of ternary cementitious systems composed of Portland cement (PC), calcium aluminate cement (CAC), and calcium sulfate (CS) sources using neutron radiography. CAC-based ternary binders can be preferred in interior flooring applications due to their self-leveling characteristics, rapid early strength development, and fast...
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Prof. Jason Ideker (Oregon State University), Oluwaseun Jegede (Oregon State University)
This research pivots to the field of volatilomics for disease detection to develop new quantitative tools for diagnosing deterioration in the abiotic environment of concrete. Volatile organic compound metabolites, an oft-unused resource of chemical information produced by concrete-associated microbial communities, will be used to detect and characterize concrete deterioration. Scanning...
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Damla Nur Çelik (Gazi University)
Lignin, the second most abundant biopolymer in plant structures after cellulose, is produced at a rate of approximately 50 million tons per year during industrial paper manufacturing. Lignosulfonates, derived from the sulfonation of lignin, are water-soluble anionic polyelectrolyte polymers that find widespread applications in various industries. In concrete technology, lignosulfonates are...
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