Results 1 to 10 of about 8,189 (252)

Evolution law of microporous structure in cement asphalt (CA) mortar under the action of polyurethane polycarboxylates [PDF]

open access: goldScientific Reports
In this paper, Cement Asphalt (CA) mortar specimens mixed with polyurethane polycarboxylate and ordinary commercial polycarboxylate water-reducing agents have been prepared. The pore structure has been determined by scanning electron microscopy (SEM) and
Shuncheng Xiang   +9 more
doaj   +4 more sources

Redesign of Zinc Polycarboxylate Dental Cement

open access: greenIbn Al-Haitham Journal for Pure and Applied Sciences, 2017
   The formulations and the properties of the Zinc Polycarboxylate Dental Cements are reviewed then new cements of this type are prepared with modified solid part of the cement.
Saad B. H. Farid
doaj   +2 more sources

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

open access: diamondE3S 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

Shear bond strength evaluation of new computer-aided design – computer-aided manufacturing chromium-cobalt alloy (Sintron) with two different types of cement: An in vitro study [PDF]

open access: yesDental Research Journal
Background: Any deficiency or problem in the shear bond strength between restoration and tooth surface can lead to recurrent decay, gingival issues, and associated esthetic concerns.
Mohammad Mahdi Khanmohammadi   +4 more
doaj   +2 more sources

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

open access: diamondИнженерно-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   +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

Synergistic effects and mechanisms of basalt fibers and polycarboxylate superplasticizer on cement-fly ash stabilized aeolian sand and crushed stones. [PDF]

open access: yesPLoS ONE
To enhance the mechanical and durability properties of cement-fly ash stabilized aeolian sand and crushed stones, the synergistic optimization effects of basalt fibers and polycarboxylate superplasticizer were investigated.
Jie Liu   +6 more
doaj   +2 more sources

Erosion Process of a Dental Polycarboxylate Cement

open access: bronzeJournal of the Ceramic Association, Japan, 1987
Erosion process of the zinc polycarboxylate cement in various acid solutions was investigated by means of determination of Zn and Mg leached from the cement and SEM observation of the surface structure. The amount of species leached from the cement increased with increasing dissociation constant of the acid, that is, with decreasing pH of the solution.
Shigeki MATSUYA   +3 more
openaire   +3 more sources

Comparative analysis of methods of introducing fine perlite into cement composition [PDF]

open access: yesE3S Web of Conferences, 2023
The article presents a comparative analysis of the methods of introducing fine perlite into the the cement systems. The first method is dry mixing of the additive with cement, followed by mixing with water with a polycarboxylate plasticizer.
Kozlova Irina   +3 more
doaj   +1 more source

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