Effect of alkali reactions on the rheology of one-part 3D printable geopolymer concrete

S Muthukrishnan, S Ramakrishnan… - Cement and Concrete …, 2021 - Elsevier
Yield strength development of 3D printable concrete by the early age activation reactions
plays a vital role in the printability of geopolymer concrete. This study presents a rheo …

Possibilities and challenges of constant shear rate test for evaluation of structural build-up rate of cementitious materials

I Ivanova, V Mechtcherine - Cement and Concrete Research, 2020 - Elsevier
The rapid development of additive manufacturing technologies in the construction industry
has heightened interest in the accurate estimation of the structural build-up rates of …

Multi-effect of fineness and replacement ratio of binders on thixotropic and some fresh state properties of cementitious systems, a comparative study

HG Şahin, ÖB Altun, A Mardani - Advanced Powder Technology, 2024 - Elsevier
Abstract Effects of cement fineness, fly ash replacement ratio and fineness changes on some
fresh state and rheological properties of mixtures were investigated in this study. Two …

Effects of volume fraction and surface area of aggregates on the static yield stress and structural build-up of fresh concrete

I Ivanova, V Mechtcherine - Materials, 2020 - mdpi.com
With increasing interest in the use of additive manufacturing techniques in the construction
industry, static rheological properties of fresh concrete have necessarily come into focus. In …

Evolution of pore structure of oil well cement slurry in suspension–solid transition stage

K Liu, X Cheng, C Zhang, X Gao, J Zhuang… - Construction and Building …, 2019 - Elsevier
This study investigates the pore structure of oil well cement slurry (OCS) in the suspension–
solid transition stage and the effect of the hydrated products on the pore structure via …

Identifying the effects of cement composition and w/c on the vulnerability of a cement slurry to gas migration

NP Sharifi, JM Vandenbossche… - … and Building Materials, 2023 - Elsevier
A modified wellbore simulation chamber (MWSC) was used to simulate gas migration
through cemented annuli at early ages. A series of gas migration tests were performed on …

Quantitative determination of the hydrostatic pressure of oil-well cement slurry using its hydration kinetics

K Liu, J Yu, Y Xia, H Wang, D Wang, J Du… - … and Building Materials, 2022 - Elsevier
This study investigated the hydration kinetics and microstructure of oil-well cement slurry in
the early hydration stage using calorimetry, X-ray powder diffraction, thermogravimetry …

Possibilities of limiting migration of natural gas in boreholes in the context of laboratory studies

M Kremieniewski, R Wiśniowski, S Stryczek, G Orłowicz - Energies, 2021 - mdpi.com
Gas migration through fresh and hardened cement slurry is an ongoing problem in the oil
industry. In order to eliminate this unfavourable phenomenon, research is being conducted …

Motion of Air Bubbles in a Cement Slurry

NA Konan, E Rosenbaum, M Massoudi - Materials, 2023 - mdpi.com
The dynamics of air (gas) bubbles in a column of cement slurry is examined numerically.
The air injected at the bottom of a laboratory-scale column through a porous distributor plate …

Development of a structured workflow for enhanced well cement integrity: lessons learned and the way ahead

C Shenold, C Teodoriu - Journal of Natural Gas Science and Engineering, 2016 - Elsevier
Despite the increased emphasis on enhancing short and long-term cement isolation, the oil
and gas industry has not agreed upon a collective, scientifically supported blueprint to …