Results 51 to 60 of about 89,639 (290)

Effect of Acid Activation-Hydrophilic-Modified Sepiolite on Comprehensive Properties of Oil-Well Cement

open access: yesJournal of Chemistry, 2019
In this paper, sepiolite was treated by acid activation, coupling agent treatment, and sulfonation modification. The purpose of this study was to explore the changes in the fluidity and mechanical properties of sepiolite cement slurry before and after ...
Yihang Zhang   +3 more
doaj   +1 more source

Hydration process and rheological properties of SJP cement paste

open access: yesYantu gongcheng xuebao, 2017
Qwing to that the common cement paste used in the complex soil strata with wide steep seams and loose space cannot fill firmly and run along the gaps, a new type of SJP cement paste is developed, which has great initial fluidity and good groutability ...
PEI Xiang-jun 1, ZHANG Jia-xing 1, WANG Wen-chen 1, YANG Fu-tian 2
doaj   +1 more source

The comparison between sulfate salt weathering of portland cement paste and calcium sulfoaluminate cement paste [PDF]

open access: yes, 2015
In this paper, the damage performances of sulfate salt weathering of Portland cement paste and calcium sulfoaluminate (CSA) cement paste were compared according to authors' previous studies.
De Schutter, Geert   +2 more
core  

Elephant‐Skin‐Inspired Porous Cementitious Tiles with Programmable Crack Networks for Passive Cooling

open access: yesAdvanced Materials, EarlyView.
Elephant‐skin‐inspired crack networks are programmed in porous diatomaceous earth (DE)‐cement composites using substrate‐guided, stress‐concentration induced fracture. The resulting crack lattices act as capillary conduits that redistribute water, while the porous matrix stores moisture.
Qingya Huang   +5 more
wiley   +1 more source

Research on the improvement of underwater workability of cement paste by composite polymers

open access: yesCase Studies in Construction Materials
The underwater workability of cement paste is essential for the application of non-dispersive underwater materials. However, the coordination of fluidity and flocculation remains challenging. While superplasticizers can enhance the fluidity of underwater
Xuesong Han   +7 more
doaj   +1 more source

Artificial Neural Network and NLR techniques to predict the rheological properties and compression strength of cement past modified with nanoclay

open access: yesAin Shams Engineering Journal, 2021
One of the most important industries and building operations that cause carbon dioxide emissions is the cement and concrete-related industries that consume about 6 million Btus per metric ton and release about 1 metric ton CO2.
Ahmed Mohammed   +6 more
doaj   +1 more source

Anti‐Slip Material‐Based Strategies and Approaches

open access: yesAdvanced Materials Technologies, EarlyView.
This review highlights the principle mechanisms of slipping at the microscale, linking contact mechanics with a friction behavior model for surface interfaces. Main strategies to develop anti‐slip properties to the surfaces are discussed alongside standardized testing approaches.
Sogand Abbaspoor‐Zanjani   +3 more
wiley   +1 more source

Effect of Ultrafine Additives on the Morphology of Cement Hydration Products

open access: yesCrystals, 2021
The present research is focused on the investigation of the influence of ultrafine additives on the structure formation of hardened cement paste and the establishment of the mechanisms of the morphological transformations, which determine the properties ...
Grigory Yakovlev   +8 more
doaj   +1 more source

Modeling spacing factor requirements and measuring water permeability in hydrated Portland cement paste [PDF]

open access: yes, 2014
Small, well-dispersed air voids in hydrated cement paste can improve workability, reduce bleeding and segregation, and improve resistance to freezing and thawing.
Li, Xinyao
core   +3 more sources

Magnetic Textiles: A Review of Materials, Fabrication, Properties, and Applications

open access: yesAdvanced Materials Technologies, EarlyView.
Magnetic textiles (M‐textiles) are emerging as a programmable materials platform that merges magnetic matter with hierarchical textile structures. This article consolidates magnetic material classes, textile architectures, and fabrication and magnetization strategies, revealing structure–property–function relationships that govern magneto‐mechanical ...
Li Ke   +3 more
wiley   +1 more source

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