Results 11 to 20 of about 3,724 (225)

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   +2 more sources

Study on rheological, adsorption and hydration properties of cement slurries incorporated with EPEG-based polycarboxylate superplasticizers [PDF]

open access: yesFrontiers in Materials
A series of polycarboxylate superplasticizers (PCEs) with different side-chain densities, main chain polymerization degrees, and side-chain lengths were designed and synthesized using a novel highly active ethylene glycol mono vinyl ether polyethylene ...
Yunhui Fang   +13 more
doaj   +2 more sources

Microshear Bond Strength of Composite Resin to Mineral Trioxide Aggregate and Potassium Nitrate-Modified Polycarboxylate Cement at Two Time Points Using Different Adhesive Approaches: An In Vitro Study. [PDF]

open access: yesClin Exp Dent Res
ABSTRACT Objectives This in vitro investigation evaluated the microshear bond strength (µSBS) of composite resin to mineral trioxide aggregate (MTA) and a modified polycarboxylate cement containing potassium nitrate (PCC/KNO3), both utilized as pulpotomy materials.
Adl A   +3 more
europepmc   +2 more sources

A prospective clinical study of polycarboxylate cement in periapical surgery. [PDF]

open access: yesMed Oral Patol Oral Cir Bucal, 2012
Objective: To evaluate the clinical efficacy of polycarboxylate cement as retrograde filling material. Design: A prospective clinical study was made of 25 patients subjected to periapical surgery with ultrasound and magnifying loupes, in which ...
Peñarrocha-Diago MA   +6 more
europepmc   +2 more sources

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

Effect of polycarboxylate-based water-reducing admixture chains length on portland cement-admixture compatibility

open access: yes, 2023
This study investigated, the effect of polycarboxylate-based water-reducing admixture (PCE) molecule chain length modification on the cementadmixture compatibility. Seven PCEs with varying chain lengths were synthesized for this aim.
Ramyar, Kambiz, Felekoğlu, Burak
core   +1 more source

Low-heat steaming treatment of concrete with polycarboxylate superplasticizers

open access: yesMagazine of Civil Engineering, 2021
Recommendations for quantity of polycarboxylate water-reducing admixtures, for the properties of Portland cement as well as the curing regimes is presented in order to reduce the Portland cement amount, to improve the transfer and design strength and ...
Olga Smirnova
doaj   +1 more source

Investigation of the Effects of Polyurethane-Modified Polycarboxylate at Ambient Temperature on the Characteristics of Cement with Supplementary Cementitious Materials

open access: yes, 2023
Via radical polymerization, three polyurethane-modified polycarboxylate molecules of various comb topologies were synthesized. This study investigated the effects of varying types and concentrations of supplementary cementitious materials (SCMs) on the ...
Zhen Jiang   +5 more
core   +1 more source

Evaluation of the effect of fluoride-containing luting cements on titanium and its effect on the shear bond strength

open access: yesContemporary Clinical Dentistry, 2019
Context: The most appropriate luting agent for titanium crowns is yet to be determined. Commonly used cements for luting titanium restorations give off leachable ions which may cause surface interaction with the titanium.
Kondumahanti V N. Avinash   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy