Results 31 to 40 of about 387,480 (278)

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 Cement, Mineral and Chemical Additive Interactions in Micro Scales

open access: yesDüzce Üniversitesi Bilim ve Teknoloji Dergisi, 2021
Self-compacting concretes (SCC), a new type of concrete, were realized with the development of polycarboxylate-based chemical additives. The interaction of these additives with the powder materials in the nano and micro scales affects the fresh and ...
Kenan Toklu   +2 more
doaj   +1 more source

Supramolecular impactmechanism of polycarboxylate superplasticizers on controlled hardening building nanocomposites [PDF]

open access: yesНанотехнологии в строительстве, 2020
: Introduction. The use of modifying nano-additives in the production of binding building materials is one of the most effective ways to control the technological parameters of concrete by conducting good control of the rheological characteristics ...
Rauf M. Khalikov   +3 more
doaj   +1 more source

Effect of the mix composition with superplasticizer admixture on mechanical properties of high–strength concrete based on reactive powders [PDF]

open access: yesArchives of Civil Engineering, 2023
This paper outlines effect of the mix composition on mechanical properties of high–strength concrete based on aggregate size like in of Reactive Powder Concrete (RPC) but without fiber reinforcement.
Jarosław Siwiński   +5 more
doaj   +1 more source

Effect of Polycarboxylic Grinding Aid on Cement Chemistry and Properties

open access: yesPolymers, 2022
In view of the disadvantages of polycarboxylic acid grinding aids, such as poor reinforcement effect and cumbersome synthesis process, a new type of polycarboxylic acid grinding aid was prepared to meet the requirements of multifunctional admixture for cement concrete.
Jianyu Yang   +3 more
openaire   +2 more sources

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

Dispersion of Carbon Nanotubes with Different Types of Superplasticizer as a Dispersing Agent for Self-Sensing Cementitious Materials

open access: yesApplied Sciences, 2021
Due to their exceptional electrical properties, carbon nanotubes (CNTs) can be applied as conductive fillers to develop self-sensing cement-based matrices.
Pedro de Almeida Carísio   +5 more
doaj   +1 more source

Incorporating graphene oxide into lime solution: A study of flocculation and corresponding improvement

open access: yesMateriales de Construccion, 2018
The dispersion behavior of graphene oxide in cement matrix is one important factor in enhancing cement performance. In this work, we investigated the dispersion of graphene oxide in cement by simulating alkaline environment with a solution of calcium ...
G. J. Jing   +5 more
doaj   +1 more source

Methodological Substantiation of the choice for a stabilizer for bismuth titanate fine particles suspensions [PDF]

open access: yesНанотехнологии в строительстве, 2023
: Introduction. The current stage of the construction industry and building materials science development involves the introduction and widespread application of nano- and fine particles capable of improving the properties of traditional materials ...
Svetlana V. Samchenko   +3 more
doaj   +1 more source

Association of macroscopic laboratory testing and micromechanics modelling for the evaluation of the poroelastic parameters of a hardened cement paste [PDF]

open access: yesCement and Concrete Research 40, 8 (2010) 1197-1210, 2010
The results of a macro-scale experimental study performed on a hardened class G cement paste [Ghabezloo et al. (2008) Cem. Con. Res. (38) 1424-1437] are used in association with the micromechanics modelling and homogenization technique for evaluation of the complete set of poroelastic parameters of the material.
arxiv   +1 more source

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