Results 211 to 220 of about 387,480 (278)
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Studies on polycarboxylates and related cements 4. Properties of cements
Journal of Dentistry, 1979Abstract The mechanical properties, setting times, apparent pH of setting cements, solubility, film thickness and adhesion to enamel and dentine have been determined for a range of zinc polycarboxylate cements. The properties are discussed in relation to the suitability of the cements as linings and luting agents.
B.W. Bertenshaw, A.A. Grant, E.C. Combe
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Journal of Sustainable Cement-Based Materials, 2022
In this study, a PCE polymer was synthesized by copolymerizing isopentenyl polyoxyethylene ether (TPEG) with trans-2-butenedioic acid (FA). Thereafter, the dispersing effect of the resulting PCE polymer was evaluated via spread flow tests in cement ...
S. Sha +5 more
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In this study, a PCE polymer was synthesized by copolymerizing isopentenyl polyoxyethylene ether (TPEG) with trans-2-butenedioic acid (FA). Thereafter, the dispersing effect of the resulting PCE polymer was evaluated via spread flow tests in cement ...
S. Sha +5 more
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Application of polycarboxylate in low cement castables
Materials Research Innovations, 2015The performance of low cement castable with polycarboxylate was studied by comparing the effects of polycarboxylate superplasticisers KS-JS70 and LMS-P and sodium tripolyphosphate on castable samples. The fluidity, bulk density, apparent porosity, compressive strength and bending strength of the castable samples at room temperature were determined, and
Z. K. Li, T. S. He
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Sealing quality of instruments cemented in root canals with polycarboxylate cements
Journal of Endodontics, 1975Stainless steel files were cemented in place as the master cone with Durelon, PCA, and Proco-sol. The treated teeth were immersed in, dye; after 2, 4, 8, and 16 days, they were examined for evidence of dye penetration. The depth of dye penetration for each group was compared with the use of the t test.
Robert A. Heyman +2 more
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The rheological properties of polyelectrolyte cements
Journal of Oral Rehabilitation, 1981SummaryThe rheological behaviour of six setting carboxylate cements was studied by capillary techniques in the shear rate of 0.65–65 s−1 and the cements were found to behave as power law fluids. All cements became dilatant as setting progressed and the kinetics of apparent viscosity increase, were found to follow an exponential function of time, exp ...
Combe, E.C., Watts, D.C., Greener, E.H.
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Langmuir
Polycarboxylate superplasticizers (PCEs) are indispensable functional ingredients in modern construction, and their usage is extensive. Herein, a polyether macromonomer (VPEG) with high reactivity was used to prepare VAPCEs with different interfacial ...
Qinglu Chang +5 more
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Polycarboxylate superplasticizers (PCEs) are indispensable functional ingredients in modern construction, and their usage is extensive. Herein, a polyether macromonomer (VPEG) with high reactivity was used to prepare VAPCEs with different interfacial ...
Qinglu Chang +5 more
semanticscholar +1 more source
The compatibility of polycarboxylate-type superplasticizers with cement
Journal of Wuhan University of Technology-Mater. Sci. Ed., 2005Four polycarboxylate-type (PC) superplasticizers of different functional groups were used; their dispersing and retaining behaviors were analyzed through ZETA potential measurement, mini-slump test of cement paste and performance test of concrete. The experimental results show that the dispersing and flow-retaining ability of PC was determined by two ...
Li Chongzhi +3 more
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Advances in Cement Research
The aggregation of graphene oxide (GO) in alkaline solutions is a critical factor that limits its potential application in cement-based materials. In this study, a novel superplasticizer was employed as a dispersant, and the GO@PCE water-reducing agent ...
Han Zhou, Dongxu Li
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The aggregation of graphene oxide (GO) in alkaline solutions is a critical factor that limits its potential application in cement-based materials. In this study, a novel superplasticizer was employed as a dispersant, and the GO@PCE water-reducing agent ...
Han Zhou, Dongxu Li
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Effect of manipulative variables on the properties of a polycarboxylate cement*
Australian Dental Journal, 1975Abstract— Strength and film thickness increased in polycarboxylate cement as the powder liquid ratio is increased and there is a tendency to reduction in adhesion which was more marked when cementation was delayed for three minutes with a 2:1 powder liquid ratio.
M. C. Kafalias +2 more
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Polycarboxylate Polymers and Blends in Different Cements
Cement, Concrete, and Aggregates, 2004Abstract During the last few years, polycarboxylate based polymers have become very popular. They contain a polycarboxylic backbone onto which ethyleneoxide side chains have been grafted. However its dispersing and slump keeping properties vary significantly, depending on the chemical structure.
D Ludirdja +3 more
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