Results 31 to 40 of about 21,244 (276)

Influence of Casing Surface Roughness on Cement Plug Integrity

open access: yesShiyou jixie, 2021
Evaluation of cement plug integrity is important for successful abandonment operations. Cement plug integrity is influenced by cement filling, but the effect of casing surface roughness on cement plug sealing has not been studied. Norwegian University of
Li Xiaoming, Li Lianzhong
doaj  

Physicochemical and Biological Properties of Mg-Doped Calcium Silicate Endodontic Cement [PDF]

open access: yes, 2021
Calcium silicate-based cement has been widely used for endodontic repair. However, it has a long setting time and needs to shorten setting time. This study investigated the effects of magnesium (Mg) ion on the setting reaction, mechanical properties, and
Kyung-Hyeon Yoo   +2 more
core   +1 more source

Study on properties and micro-properties of cement-sodium silicate double-liquid grouting material

open access: yesMeikuang Anquan
In order to explore the internal relationship between the microstructure and macroscopic properties of cement-sodium silicate double-liquid grouting materials, Portland cement was used as the base cementing material and sodium silicate as the admixture ...
Qiuli LI   +6 more
doaj   +1 more source

Properties of concrete modified by amorphous alumina silicate

open access: yesEngineering Structures and Technologies, 2015
Concrete is the most widely used building material obtained by hardening the mix made of coarse and fine aggregates, cement as the binding material, and water. The basic properties of concrete depend on the quality and properties of cement, w/c ratio and
Džigita Nagrockienė   +3 more
doaj   +1 more source

From Pores to Pavement: Advanced Modeling of Aluminosilicates for Scalable Carbon Capture in Concrete

open access: yesAdvanced Science, EarlyView.
This study presents a transferable modeling framework for carbon capture using aluminosilicates, integrating Universal Isotherm Modeling with experimental data. It reveals how ultramicropores, alumina content, and amine functionalization influence CO2 adsorption energetics.
Pooja Anil Kumar Nair   +4 more
wiley   +1 more source

Physical Origin of Temperature Induced Activation Energy Switching in Electrically Conductive Cement

open access: yesAdvanced Science, EarlyView.
The temperature‐induced Arrhenius activation energy switching phenomenon of electrical conduction in electrically conductive cement originates from structural degradation within the biphasic ionic‐electronic conduction architecture and shows percolation‐governed characteristics: pore network opening dominates the low‐percolation regime with downward ...
Jiacheng Zhang   +7 more
wiley   +1 more source

Rheological study of interactions between MHEC and superplasticizers in aqueous solutions for applications in cement industry [PDF]

open access: yes, 2011
Innovative cement-based materials are characterized today by rather complex formulations. In particular, when cement pastes are considered, their formulation generally includes two different types of polymers: a rheology modifier (RM) (typically a ...
Nicodemi, Fabio
core  

Enhancing the rheology, reaction kinetics and early-age strength of limestone calcined clay cement (LC³) with sodium silicate addition [PDF]

open access: yes
The effect of small-dose sodium silicate (SS) solutions with varying compositions on the rheology and early-age strength of limestone calcined clay cement (LC3) was evaluated.
Wu, Haoming   +5 more
core   +1 more source

Volume of Voids in Retrograde Filling: Comparison between Calcium Silicate Cement Alone and Combined with a Calcium Silicate-based Sealer [PDF]

open access: yes, 2020
INTRODUCTION: The aim of this study was to compare the volume of voids between retrograde filling using calcium silicate cement alone and retrograde filling using a combination of calcium silicate cement with a calcium silicate-based sealer. METHODS:
김선일, 김의성, 신수정
core   +1 more source

The Effect of Red Mud on Sintering Processes and Minerals of Portland Cement for Roads

open access: yesCrystals, 2021
As a solid waste generated in the alumina industry, red mud poses a significant environmental hazard and a storage problem. In this study, red mud was added to road cement clinker in order to utilize it.
Xiao Wang   +4 more
doaj   +1 more source

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