Browsing Fakultet for ingeniørvitenskap (IV) by Journals "Cement and Concrete Research"
Now showing items 21-40 of 45
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Influence of aluminum sulfate on properties and hydration of magnesium potassium phosphate cements
(Peer reviewed; Journal article, 2022)Aluminum sulfate shows a positive effect on preventing efflorescence of magnesium potassium phosphate (MKP) cements. Its influence on the MKP cement properties and hydration is explored in this study. Compared to a reference ... -
Influence of wollastonite on hydration and properties of magnesium potassium phosphate cements
(Journal article; Peer reviewed, 2020) -
Investigation of leaching in steel fiber-reinforced shotcrete exposed to fresh and saline groundwater in a subsea road tunnel
(Peer reviewed; Journal article, 2022)The field and laboratory investigations performed in the Frøya subsea road tunnel, constructed between 1998 and 2000, focus on the degree of leaching undergone by steel fiber-reinforced shotcrete in fresh and saline ... -
Iron speciation in blast furnace slag cements
(Peer reviewed; Journal article, 2021)Slag-containing pastes and concretes were analysed by element-specific synchrotron-based techniques to determine the speciation of iron on crushed materials through spatially resolved micro-spectroscopic studies. The ... -
Limit states for sustainable reinforced concrete structures
(Journal article; Peer reviewed, 2019)Probability-based limit state design is a hallmark of modern civil engineering practice. Code requirements to meet both ultimate limit states (ULS) and serviceability limit states (SLS) have vastly improved the safety and ... -
Limitations of the hydrotalcite formation in Portland composite cement pastes containing dolomite and metakaolin
(Journal article; Peer reviewed, 2018)This study focuses on the reaction of dolomite powder in combination with metakaolin in Portland composite cement pastes. We studied paste samples cured at 20 °C, 38 °C, and 60 °C for up to 1 year. In these systems, the ... -
Macrocell corrosion in carbonated Portland and Portland-fly ash concrete - Contribution and mechanism
(Journal article, 2019)The corrosion of reinforcement in carbonated concrete with high moisture state was measured with and without electrical connection to reinforcement in non-carbonated concrete. The impact of the fly ash content and the ... -
Microstructural changes and mass transport in cement-based materials: a modeling approach
(Peer reviewed; Journal article, 2021)A generic modeling framework is presented to relate microstructural changes, i.e. changes in the pore volume distribution and phase assemblage, and mass transport in cement-based materials. The modeling framework accounts ... -
Modeling of Water Transport in Highly Saturated Concrete with Wet Surface During Freeze/thaw
(Journal article; Peer reviewed, 2018)Wet frost exposure is a usual environmental condition for cement-based materials (CBM) during winter and the most common way of frost testing in the lab. In this study, the temperature gradient, pressure gradient, and the ... -
On the effect of calcium lignosulfonate on the rheology and setting time of cement paste
(Journal article; Peer reviewed, 2017)The effect of softwood calcium lignosulfonate, LSs, on the rheology and setting time of cement paste has been investigated. Two Portland cements with different surface area and C3A content were used. The lignosulfonate was ... -
On the mechanisms of consumption of calcium lignosulfonate by cement paste
(Journal article; Peer reviewed, 2017)The aim of this paper is to assess the mechanisms of consumption of softwood calcium lignosulfonate (LSs) by cement paste. The LSs consumption by two different cements (CX and ANL) and two reference materials (CaCO3 and ... -
Phase changes in cementitious materials exposed to saline solutions
(Peer reviewed; Journal article, 2023)This article summarizes long-term degradation mechanisms of cementitious materials in contact with fresh and saline solutions based on a review of experimental observations in field and laboratory studies. In addition, a ... -
Predicting damage in aggregates due to the volume increase of the alkali-silica reaction products
(Peer reviewed; Journal article, 2022)Volume increase between the reactants and the products of alkali-silica reaction could reach up to 100%. Taking place inside the aggregates, ASR imposes internal pressure on the surrounding material. In the current paper, ... -
Predicting damage in aggregates due to the volume increase of the alkali-silica reaction products
(Peer reviewed; Journal article, 2022)Volume increase between the reactants and the products of alkali-silica reaction could reach up to 100%. Taking place inside the aggregates, ASR imposes internal pressure on the surrounding material. In the current paper, ... -
Predicting damage in aggregates due to the volume increase of the alkali-silica reaction products
(Peer reviewed; Journal article, 2022)Volume increase between the reactants and the products of alkali-silica reaction could reach up to 100%. Taking place inside the aggregates, ASR imposes internal pressure on the surrounding material. In the current paper, ... -
Revisiting concrete frost salt scaling: On the role of the frozen salt solution micro-structure
(Peer reviewed; Journal article, 2022)We simulate the glue-spall stress due to mechanical interactions between a frozen saline solution (brine-ice composite) and a non-air entrained concrete surface including the impact of the micro-structure of the frozen ... -
Role of calcium on chloride binding in hydrated Portland cement–metakaolin–limestone blends
(Journal article; Peer reviewed, 2017)Chloride binding is investigated for Portland cement–metakaolin–limestone pastes exposed to CaCl2 and NaCl solutions. The phase assemblages and the amount of Friedel's salt are evaluated using TGA, XRD and thermodynamic ... -
Solubility and characterization of synthesized 11 Å Al-tobermorite
(Peer reviewed; Journal article, 2022)The structure and solubility of hydrothermally prepared 11 Å Al-tobermorite with Al/(Al + Si) = 0.1 has been studied. NMR and FTIR data indicated the formation of a cross-linked, well crystalline 11 Å Al-tobermorite and ... -
Sulfate resistance of calcined clay – Limestone – Portland cements
(Journal article; Peer reviewed, 2019)Calcined clays emerge as a promising source of supplementary cementitious material, which can provide a significant lowering of the Portland clinker content in blended cements. This study focusses on sulfate resistance of ... -
Synthesis, characterization, and thermodynamic study of selected K-based zeolites
(Peer reviewed; Journal article, 2021)Potassium-rich zeolites often occur in cementitious systems, as K+ is widespread in various cementitious materials, such as Portland, blended and alkali-activated cements. The knowledge of their stability and of thermodynamic ...