Article
Construction & Building Technology
Ana Hernandez-Rodriguez, Andrea Orlando, Giordano Montegrossi, Bruno Huet, Giorgio Virgili, Orlando Vaselli
Summary: This study investigates the carbonation rate of class G Portland cement under different PCO2 levels through three types of laboratory experiments. The results show that the carbonation depth is linearly related to the square root of reaction time, indicating that the cement carbonation rate is controlled by diffusion.
CEMENT & CONCRETE COMPOSITES
(2021)
Article
Construction & Building Technology
Jie Liu, Jingping Qiu, Pinqi Wu, Xiaogang Sun, Shiyu Zhang, Zhenbang Guo
Summary: Thermal activation technology was used to increase the pozzolanic reactivity of oil shale residue, which was used as supplementary cementitious materials. Different calcination temperatures were tested, and it was found that calcining at 600 degrees Celsius yielded the best results in terms of pozzolanic reactivity improvement. The compressive strength of OPC/OSR composites material was increased by around 8% to 11% using OSR as SCM at 10% replacement rate.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Seonhyeok Kim, Joonho Seo, H. N. Yoon, H. K. Lee
Summary: The study explored the effects of CO2 exposure on TiO2-incorporated Portland cement, revealing that while the incorporation of TiO2 positively impacted the hydration process and early strength development, it did not significantly enhance strength at a later age. Additionally, exposure to CO2 led to a reduction in the NOx-removal performance of the samples, as the TiO2 particles on the surface were covered by calcium carbonate formed during carbonation.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Chemistry, Physical
Qingbiao Wang, Yiming Ma, Fuqiang Wang, Zhenyue Shi, Hongyue You, Yuanyuan Tian, Yunfei Liu, Zhongjing Hu, Hongxu Song, Dong Wang, Yueqiang Sun, Rongshuai Yang, Haoran Sun
Summary: This study investigates the carbonation depth and strength of slag Portland cement-reinforced soil and finds that carbonation can improve the strength of the soil, while slag Portland cement has good carbonation durability.
Article
Construction & Building Technology
I. E. Teune, K. Schollbach, M. V. A. Florea, H. J. H. Brouwers
Summary: This study investigates the impact of aqueous- and dry-carbonation on the formation of polymorphs, silicate microstructure, and porosity in cement pastes. The results show that aqueous carbonation in 0.1 M sodium hydroxide is the most efficient method for carbonation, promoting rapid carbonation and the formation of highly porous silicate phases. Additionally, it is recommended to use silica-rich materials like CEM-III for better pozzolanic reactivity.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Lucas Henrique Pereira Silva, Jacqueline Roberta Tamashiro, Fabio Friol Guedes de Paiva, Luis Fernando dos Santos, Silvio Rainho Teixeira, Angela Kinoshita, Patricia Alexandra Antunes
Summary: The study found that using bamboo leaf ash as a partial replacement for cement in mortar production can achieve certain economic benefits and mitigate environmental impacts, with the compressive strength meeting standard requirements. Bamboo leaf ash has the potential to be used as a partial substitute for cement, offering good cost-benefit and eco-efficiency based on life cycle analysis (LCA).
JOURNAL OF BUILDING ENGINEERING
(2021)
Review
Chemistry, Multidisciplinary
Victor A. Franco-Lujan, Fernando Montejo-Alvaro, Samuel Ramirez-Arellanes, Heriberto Cruz-Martinez, Dora I. Medina
Summary: This study reviews and analyzes the properties of fresh and hardened states of nanomaterial-reinforced Portland cement-based materials. The results show that the partial replacement of Portland cement by nanomaterials can increase their mechanical properties at early ages and significantly improve their durability. Long-term studies on the mechanical and durability properties of nanomaterial-reinforced cement materials are highly necessary due to the advantages of nanomaterials as partial replacements for Portland cement.
Article
Construction & Building Technology
Mercy Achang, Mileva Radonjic
Summary: The study found that olivine reacts in acidic HCl solution but not significantly in other fluids, suggesting its potential for enhancing the resistance of wellbore cement to leakage.
CEMENT & CONCRETE COMPOSITES
(2021)
Article
Construction & Building Technology
V. Charitha, G. Athira, A. Bahurudeen, Shivang Shekhar
Summary: This study conducts a systematic review on the carbonation performance of various types of alkali-activated binders compared to conventional Portland cement systems. The study compares the carbonation resistance, including carbonation depth, pH change, compressive strength, and corrosion resistance, of alkali-activated binders with ordinary Portland cement and blended cement binders. The study also examines the mineralogical and morphological characteristics of the carbonation products formed in different alkali-activated binder systems using thermogravimetric analysis, X-ray diffraction analysis, and scanning electron microscopy.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Yanjie Tang, Gang Liu, Katrin Schollbach, Yuxuan Chen, Wei Chen, H. J. H. Brouwers
Summary: This paper evaluates the production of lightweight aggregates using hydrated cement paste powder (HCP) through carbonation and normal curing methods. The study shows that different types of aggregates require different optimal carbonation periods and the addition of silica fume improves the strength development of the aggregates. This research contributes to a better understanding and optimization of the preparation method for lightweight aggregates.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Physical
Kamasani Chiranjeevi Reddy, Nahom S. Melaku, Solmoi Park
Summary: The assessment of carbonation extent and related phase changes is important for evaluating concrete durability. This study evaluated the phase composition of Portland cements with different clinker compositions using thermodynamic calculations. Calcite, zeolites, and gypsum were identified as carbonation products, and the carbonation extent was directly related to the initial phase volume.
Article
Green & Sustainable Science & Technology
Laura E. Dalton, Dustin Crandall, M. Pour-Ghaz
Summary: This study investigates the formation of carbonate and reactive transport rate in variably saturated portland cement mortars under the flow of high concentrations of gas, liquid, or supercritical CO2. X-ray computed tomography is used to quantify the microstructural evolution during CO2 flow, and additional analysis techniques are used to further quantify microstructural changes. The study finds that supercritical CO2 moves more rapidly and precipitates more carbonates than liquid or gas CO2 under dry conditions. However, at 50% degree of saturation (DOS), the CO2 state did not affect the transport rate, as each specimen carbonated within the first hour of CO2 exposure. When the pore space is at 50% or 100% DOS, supercritical CO2 did not react more rapidly or result in more carbonate formation compared to gas or liquid CO2. The amount of Ca(OH)(2) that contributes to CaCO3 formation is correlated to the DOS.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
Article
Green & Sustainable Science & Technology
M. H. Samarakoon, P. G. Ranjith, Fei Xiao, B. L. Avanthi Isaka, S. M. Gajanayake
Summary: This study evaluates the carbonation-induced properties of different types of AACs under reservoir conditions and finds that increasing slag content can improve the strength properties and microstructure of AACs, making them a potential alternative to Portland oil well cement.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2021)
Article
Construction & Building Technology
Junjie Pei, Raju Sharma, Jeong Gook Jang
Summary: The study found that using carbonated cement clinker has a positive effect on the strength of mortar. However, excessive carbonation products can reduce the strength of the materials, making relatively smaller carbonated cement clinkers more suitable for achieving high strength in mortar.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Physical
Young-Jin Kim, Sang-Rak Sim, Dong-Woo Ryu
Summary: This study developed a technology to reduce CO2 emissions and utilize CO2 from the cement industry by replacing cement with CO2 reactive hardening cement. The results showed that as the content of CO2 reactive hardening cement increased, the carbonation depth, compressive strength increase rate, and CO2 sequestration rate increased, indicating that it can be used as a secondary cement product.
Article
Energy & Fuels
Arshad Raza, Raoof Gholami, Minou Rabiei, Vamegh Rasouli, Reza Rezaee
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2020)
Article
Chemistry, Physical
Mehdi Safari, Ali Rahimi, Raoof Gholami, Andrian Permana, Wee Siaw Khur
Summary: Low salinity water flooding is a method used in the EOR process to change the surface wettability and reduce interfacial tension. This study investigates the effects of ions on the surface wettability of shale rocks and the interfacial tension of brine/oil. It is found that decreasing the concentration of monovalent ions changes the wettability of shale from neutral wet to weakly water wet, while decreasing the concentration of divalent ions induces an oil wet system. Time and salt ion concentration have significant impacts on shale wettability and interfacial tension.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2022)
Article
Energy & Fuels
Daniel Asante Otchere, Tarek Omar Arbi Ganat, Raoof Gholami, Syahrir Ridha
Summary: The use of Artificial Intelligence (AI) in the petroleum industry has increased to accelerate decision making, reduce cost and time. Supervised machine learning has become popular in establishing relationships between complex non-linear datasets. Support Vector Machine (SVM) and Relevant Vector Machine (RVM) have emerged as competitive algorithms, often outperforming Artificial Neural Network (ANN).
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Ahmed Fatah, Ziad Bennour, Hisham Ben Mahmud, Raoof Gholami, Mofazzal Hossain
Summary: Surface wettability plays a crucial role in controlling CO2 seal capacity and storage potential of shales. Strong correlation between mineral composition and alteration in shale/water wettability was observed, with clay-rich shales showing a possible transition to CO2-wet behavior. Increasing temperature accelerates CO2/shale interactions, while higher cohesive energy density of CO2 promotes a favorable CO2 wetting environment. Shales with high quartz contents exhibit strong water wetting behavior after SCCO2 treatment, enhancing their sealing capacity and potential for CO2 containment in geological storage sites.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2021)
Article
Green & Sustainable Science & Technology
Raoof Gholami, Arshad Raza, Pal Andersen, Alejandro Escalona, Nestor Cardozo, Dora Marin, Mohammad Sarmadivaleh
Summary: Many studies have been conducted to evaluate the long-term integrity of seals in CO2 storage sites, focusing on the geochemical reactions, mineral transformations, and surface wettability alterations that may occur. This study specifically examined changes in mineralogy and surface wettability of shales exposed to supercritical CO2 for 6 months, finding that quartz dissolution and kaolinite precipitation can be induced in the presence of CO2. The study suggests that maintaining water wettability of clay surfaces in storage sites is important to prevent CO2 migration. Further research is needed to ensure the integrity of seals in storage sites during and after injection.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2021)
Article
Energy & Fuels
Li Yisong, Raoof Gholami, Mehdi Safari, Ali Rahimi, Wee Siaw Khur
Summary: The study extracts and characterizes a natural surfactant with high thermal stability, demonstrating its synergistic effects with low salinity water, effectively reducing interfacial tension and altering sandstone surface wettability to enhance hydrocarbon production efficiency.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Mehdi Safari, Mohammad Javad Ameri, Raoof Gholami, Ali Rahimi
Summary: Undesirable water production due to water coning in hydrocarbon reservoirs has been a significant issue, affecting oil production and well shutdown. A new approach combining boundary control and Ensemble Kalman Filter showed promising results in controlling water coning and estimating reservoir permeability accurately.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Daniel Asante Otchere, Tarek Omar Arbi Ganat, Raoof Gholami, Mutari Lawal
Summary: With the advancement of technology, new well logs carrying vital information about reservoir and subsurface layers have been acquired. The application of machine learning models for predicting petrophysical parameters is increasing, with this study demonstrating the potential of ensemble modeling to improve reservoir characterization.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Raoof Gholami, Arshad Raza, Bernt Aadnoy, Minou Rabiei, Vamegh Rasouli
Summary: This study, based on a case study from a gas field in Australia, reveals that the compaction mechanism of deep-water sandstone reservoirs can exhibit elasto-plastic or viscoplastic behavior depending on the type of clays in the rock matrix, confining pressure, and loading rate. The deformation during compaction is shown to be time-dependent and influenced by the clay type in the sandstone matrix. Different behaviors are observed based on the presence of kaolinite or illite/smectite, with a transition to viscous response above a threshold confining pressure and a shift to viscoplastic deformation with increasing loading rate.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2021)
Review
Geosciences, Multidisciplinary
Raoof Gholami, Arshad Raza, Stefan Iglauer
Summary: Carbon Capture and Storage (CCS) is considered as an effective strategy to achieve the net zero emission target by 2050, but attention should be paid to the interactions between rocks and sealing materials with CO2 to prevent leakage during operation. Discrepancies between laboratory results and field observations may be due to limited testing time, complexity of mechanisms involved, and slow reaction rates of chemical processes.
EARTH-SCIENCE REVIEWS
(2021)
Article
Engineering, Geological
Daniel Fraser, Raoof Gholami, Mohammad Sarmadivaleh
Summary: Magnitude and direction of in-situ stresses are crucial inputs for geomechanical analysis, with Deformation Rate Analysis (DRA) being an effective method for unconventional shale gas reservoirs. However, the elapsed time between sample extraction and testing, as well as the impact of loading cycles on results, should not be ignored during laboratory measurements.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2021)
Article
Energy & Fuels
Mehdi Safari, Raoof Gholami, Morteza Jami, Mavvinesh Arul Ananthan, Ali Rahimi, Wee Siaw Khur
Summary: This study developed a new mathematical equation to correct the porosity-permeability relationship in rocks with ellipsoidal grains, showing that deviations in the sphericity of grains increase permeability. Models with an aspect ratio of 1.0 had the lowest permeability, suggesting that irregular grain shapes can impact fluid flow paths.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Ahmed Fatah, Hisham Ben Mahmud, Ziad Bennour, Raoof Gholami, Mofazzal Hossain
Summary: The injection of supercritical CO2 (SCCO2) has a significant impact on the petrophysical properties and pore structure of shales during geological storage. The alteration of mineralogy and pore structure is influenced by SCCO2 treatment, with clay-rich shales showing greater changes in pore volume compared to quartz-rich shales. The development of micro-cracks in the surface of Mancos shale creates new pores and increases pore volume. The results provide important insights into the effect of CO2 on the pore structure and mineralogical alteration of shale.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Atif Ismail, Hafiz Muhammad Awais Rashid, Raoof Gholami, Arshad Raza
Summary: This study investigated the impact of grass additives on the rheological properties of drilling mud using machine learning techniques, showing that grass can improve the gel strength and viscosity of drilling mud. Random tree was found to be the most effective technique for modeling gel strength.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2022)
Article
Energy & Fuels
Raoof Gholami, Arshad Raza, Minou Rabiei, Nikoo Fakhari, Punissha Balasubramaniam, Vamegh Rasouli, Ramasamy Nagarajan
Summary: A new water-based mud formulated with nano-materials was proposed to stabilize active shale layers during drilling, showing significant reduction in filtration loss without impacting mud density and rheology. However, caution must be taken to ensure proper dispersion of the additives in the mud.