Results 21 to 30 of about 387,480 (278)

Compatibility of portland cement and polycarboxylate-based superplasticizers in high-strength concrete for precast constructions [PDF]

open access: yesИнженерно-строительный журнал, 2016
Application of polycarboxylate-based superplasticizers can contribute to the increase of concrete early strength. It makes possible to obtain the concrete of the required strength after heat-steaming treatment with decreasing the isothermal temperature ...
O.M. Smirnova
doaj   +1 more source

Interlayer bonding investigation of 3D printing cementitious materials with fluidity retaining polycarboxylate superplasticizer and high dispersion polycarboxylate superplasticizer [PDF]

open access: yesConstruction and Building Materials (2022), 2021
Proposed special requirements exist for the rheological properties and time varying characteristics of 3D printing cementitious materials (3DPC). In this study, high dispersion polycarboxylate superplasticizer (HD PC) and fluidity retaining polycarboxylate superplasticizer (FR PC) were used to control the rheological behaviors of 3DPC.
arxiv   +1 more source

Dispersing Effect of Core Cross-linked Star Polycarboxylate Superplasticizers on the Cement Paste [PDF]

open access: yesE3S Web of Conferences, 2021
Researches on topological modification of polycarboxylate superplasticizers to improve the water-reducing or slump-retainning properties have been a hot topic in rencent years. Herein, a core crosslinked star polycarboxylate superplasticizers (SPCE) were
Zhang Jinlong   +4 more
doaj   +1 more source

The physics of cement cohesion [PDF]

open access: yesSci. Adv. 7, eabg5882 (2021), 2021
Cement is one of the most produced materials in the world. A major player in greenhouse gas emissions, it is the main binding agent in concrete, to which it provides a cohesive strength that rapidly increases during setting. Understanding how such cohesion emerges has been a major obstacle to advances in cement science and technology.
arxiv   +1 more source

Well Cement Degradation and Wellbore Integrity in Geological CO2 Storages: A Literature Review [PDF]

open access: yesPetroleum & Petrochemical Engineering 5 (2021), 2023
Carbon capture and storage (CCS) has emerged as the most effective method to curb the CO2 concentration in the atmosphere. It can store up to 5 billion tons of CO2 per year. To guarantee a safe and economical geological storage, the well cement degradation and wellbore integrity need to be studied thoroughly.
arxiv   +1 more source

Microleakage at implant abutment and prosthesis interface in cemented implant-supported prosthesis

open access: yesJournal of Pharmacy and Bioallied Sciences, 2021
Background: Dental implants have an important role in mainstream dental practice today to restore esthetics. The present study was conducted to evaluate the microleakage at implant abutment and prosthesis interface in cemented implant-supported ...
Soni Kumari   +5 more
doaj   +1 more source

Research on the performance of recycled concrete powder self-leveling mortar based on orthogonal experiment [PDF]

open access: yesE3S Web of Conferences, 2020
Waste concrete in the construction waste is reprocessed into concrete sand and powder [1]. Recycled concrete sand with a particle size between 0.15 and 0.25mm partially replaces natural sand, and the recycled concrete powder with a particle size less ...
Lin Yuezhong   +2 more
doaj   +1 more source

Rheological Analysis and Evaluation of Measurement Techniques for the Curing Polymethylmethacrylate Bone Cement in Vertebroplasty [PDF]

open access: yesACS Biomater. Sci. Eng., p. acsbiomaterials.4c00417, Jun. 2024, 2023
Vertebroplasty is a minimally invasive surgical procedure used to treat vertebral fractures, which conventionally involves injecting polymethylmethacrylate (PMMA) bone cement into the fractured vertebra. A common risk associated with vertebroplasty is cement leaking out of the vertebra during the injection, which may occur due to a lack of ...
arxiv   +1 more source

Structural Performance of Laterite soil Stabilised with Cement and Blue Gum (Eucalyptus Globulus) Wood Ash for Use as a Road base Material [PDF]

open access: yesInternational Journal of Engineering Trends and Technology, 69(9),257-264, September 2021, 2021
This study examines the effect of partially replacing cement with blue gumwood ash (BGWA) in stabilizing laterite soil to be used as a potential road base material. Initially, Ordinary Portland Cement was introduced to the soil at varying contents from 0 to 12% in steps of 3% by weight of the soil sample.
arxiv   +1 more source

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