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Moghadam, A. (author), Peters, E. (author), Nelskamp, S. (author)The Groningen gas field in the Netherlands has been a major source of natural gas in Europe for the past few decades. There are approximately 350 wells drilled in the field that either already are or will be plugged and abandoned in the near future. In this work, we developed a two-phase, two-component numerical model based on the stratigraphy...article 2023
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Garcia Moretz-Sohn Monteiro, J. (author), Roussanaly, S. (author)In this work, four illustrative CO2 capture, utilization and storage chains are investigated in order to evaluate the economic feasibility of CCUS technologies in connection to the cement industry. A CCS reference chain in which 90% of the CO2 emissions (or 0,694 MtCO2/y) are stored in a saline aquifer is first studied. Due to emissions related...article 2022
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Tosti, L. (author), van Zomeren, A. (author), Pels, J.R. (author), Comans, R.N.J. (author)Purpose: This study evaluates the potential of biomass ash as raw clinker material and the influence of biomass feedstock and thermal conversion technology on biomass ash properties. Methods: A set of criteria for biomass feedstock and ash properties (i.e. CaO/SiO2 ratio and burnability) are established. A large dataset was collected and the...article 2021
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Orlic, B. (author), Moghadam, A. (author), Brunner, L. (author), van Unen, M. (author), Wójcicki, A. (author), Bobek, K. (author), van der Valk, K. (author), Wollenweber, J. (author)Well leakage risk is a key concern for the safety and economics of geological CO2 storage. Maintaining the integrity of annulus cement in the wellbore during the lifetime of well is of paramount importance. Cement properties and the stress state in cement at the downhole conditions are however uncertain and difficult, if at all possible, to...conference paper 2021
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Tosti, L. (author), van Zomeren, A. (author), Pels, J.R. (author), Comans, R.N.J. (author)This study evaluates the potential of biomass ash as raw clinker material and the infuence of biomass feedstock and thermal conversion technology on biomass ash properties. Methods: A set of criteria for biomass feedstock and ash properties (i.e. CaO/SiO2 ratio and burnability) are established. A large dataset was collected and the best...article 2021
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Tosti, L. (author), van Zomeren, A. (author), Pels, J.R. (author), Damgaard, A. (author), Comans, R.N.J. (author)In this study, we performed a life cycle assessment of the reuse of biomass fly ash as secondary cementitious material in cement mortars as alternative to a reference landfill scenario of the ash. Since biomass ash does contain enhanced levels of elements that are of potential concern for the environment or human exposure, the performed Life...article 2019
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TerHeege, J.H. (author), Wollenweber, J. (author), Naumann, M. (author), Pipilikaki, P. (author), Vercauteren, F. (author)Wells used for steam-assisted gravity drainage (SAGD), for cyclic steam stimulation (CSS), for hydrocarbon production in areas with anomalous high geothermal gradient, or for geothermal energy extraction all are operated in high temperature environments where maintaining long term wellbore integrity is one of the key challenges. Changes in...conference paper 2019
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Tosti, L. (author), van Zomeren, A. (author), Pels, J.R. (author), Dijkstra, J.J. (author), Comans, R.N.J. (author)The pH-dependent availability and leaching of major and trace elements was investigated for a wide range of biomass ash from different fuels and conversion technologies. A technical and environmental assessment of selected biomass ash for application in soil or cement mortars was performed, using both the total content and leaching of elements....article 2019
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Keulen, A. (author), van Zomeren, A. (author), Dijkstra, J.J. (author)This study explores the leaching of oxyanionic metalloid species (As, Mo, Se, V and Cr) from alkali activated slag-fly ash materials (AAM), dependent on various mixture parameters i.e., activator molarity, slag-fly ash precursor/binder compositions, liquid to binder ratio, curing time and strength. The analyses focusses on the leaching of...article 2018
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Orlic, B. (author), Chitu, A. (author), Brunner, L. (author), Koenen, M. (author), Wollenweber, J. (author), Schreppers, G.J. (author)Loading history during drilling, completion and operations of the well can affect wellbore integrity. Debonding along well cement interfaces leads to the creation of micro-annuli and potential leakage pathways. We investigate the risk of debonding by modeling the integrity of an example well throughout its life-time using a finite element...conference paper 2018
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Tosti, L. (author), van Zomeren, A. (author), Pels, J.R. (author), Comans, R.N.J. (author)This study evaluated the mechanical and environmental properties of cement mortars containing fly ash from biomass combustion as a secondary cementitious material. Cement mortars with 20 and 40% wt. replacement of Portland cement with fly ash from two types of installations were tested for their compressive strength and leaching behaviour....article 2018
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TerHeege, J.H. (author), Orlic, B. (author), Wollenweber, J. (author)Geothermal drilling environments are often hostile to well materials, especially in magmatic settings where properties of well casing and cements may rapidly change as a result of high temperatures and chemically active formation fluids. Prolonging the lifetime of such geothermal wells is one of the key challenges to achieve a commercially...conference paper 2017
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Holthuizen, P.E. (author), Çopuroglu, O. (author), Polder, R.B. (author)In the Netherlands civil engineering structures, such as overpasses, bridges and tunnels are generally built using blast furnace slag cement (BFSC, CEM III/B) concrete, because of its high resistance against chloride penetration. Although the Dutch experience regarding durability performance of BFSC concrete has been remarkably good, its...conference paper 2017
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Deziel, N.C. (author), Nuckols, J.R. (author), Jones, R.R. (author), Graubard, B.I. (author), de Roos, A.J. (author), Pronk, A. (author), Gourley, C. (author), Colt, J.S. (author), Ward, M.H. (author)Proximity to facilities emitting polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/F) has been associated with increased risk of non-Hodgkin lymphoma (NHL). There is limited information about whether proximity to industrial sources leads to indoor PCDD/F contamination of homes. We measured carpet dust concentrations (pg/g...article 2017
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Polder, R.B. (author), de Rooij, M.R. (author), Larsen, C.K. (author), Pedersen, B. (author)Blast furnace slag cement (BFSC) has been used in reinforced concrete structures in marine and road environment in The Netherlands for nearly a century. Experience is good and long service lives can be obtained. In Norway experience with BFSC is scarce. In The Netherlands, a high resistance against chloride penetration and a high electrical...conference paper 2016
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Wasch, L.J. (author), Koenen, M. (author), Wollenweber, J. (author), Tambach, T.J. (author)To ensure the safety of a CO 2 storage site and containment of CO 2 in the subsurface, the integrity of wellbore materials must be maintained. Field and laboratory studies have shown CO 2 -induced reactivity of wellbore cement, but these results have to be extrapolated to the extended time span of CO 2 storage. Geochemical modeling provides a...article 2015
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Tambach, T.J. (author), Koenen, M. (author), Wasch, L.J. (author), van Bergen, F. (author)The short- and long-term geochemical impact of CO2 injection into a depleted gas reservoir (DGR) is investigated using reservoir/geochemical modeling with TOUGH2/TOUGHREACT and 1D kinetic diffusion modeling with PHREEQC (caprock/well-cement). Simulations of CO2 injection into the reservoir predict displacement and buoyancy of post-production CH4...article 2015
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Yang, Z. (author), Fischer, H. (author), Polder, R. (author)Owing to the unique molecular structure and high ion exchange capacity, hydrotalcites are believed to have a potential to be modified and tailor-made as an active component of mortar and/or concrete. In this paper, two types of modified hydrotalcites (MHT-pAB and MHT-NO2) were incorporated into cement mortars with two dosage levels replacing 5%...article 2015
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de Rooij, M.R. (author), Mendonca Filho, F.F. (author)In this article a trip is taken to characterize concrete through its hardened cement paste based on its microstructure. Optical microscopy is coupled to advanced image analysis, as well as statistical data analysis to characterize heterogeneous concrete material. The article takes a closer look at the determination of the w/c ratio through the...conference paper 2015
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Polder, R.B. (author), Nijland, T.G. (author), de Rooij, M.R. (author), Larsen, C.K. (author), Pedersen, B. (author)road environment in The Netherlands for nearly a century. The experience is good and structures with long service lives can be obtained, as has been shown by several field studies. This is caused by a high resistance against chloride penetration and a high electrical resistivity, demonstrated both in the field and in the laboratory. Due to the...conference paper 2014