Results 31 to 40 of about 5,625 (250)

Evaluations of All-in-One, Polycarboxylate-Based Superplasticizer with Viscosity Modifying Agents for the Application of Normal-Strength, High-Fluidity Concrete

open access: yesApplied Sciences, 2021
High fluidity concrete exhibits an excellent self-compacting property. However, the application of typical high-fluidity concrete is limited in the normal strength range (18~35 MPa) due to the large amount of binder.
Tae-Woong Kong   +3 more
doaj   +1 more source

Different effects of NSF and PCE superplasticizer on adsorption, dynamic yield stress and thixotropy of cement pastes [PDF]

open access: yes, 2018
This study compares the differences and similarities of two types of superplasticizers-NSF (Naphthalene Sulfonate Formaldehyde) and PCE (PolyCarboxylate Ester)-in fresh cement paste systems, in terms of adsorption, dynamic yield stress, and thixotropic ...
De Schutter, Geert, Qian, Ye
core   +2 more sources

Sonicating polycarboxylate-based superplasticizer for application in cementitious matrix

open access: yesRevista IBRACON de Estruturas e Materiais, 2022
Sonication is widely used for nanomaterials dispersion in cementitious matrices. Polycarboxylate-based superplasticizer (SP) admixtures are usually incorporated in the aqueous nanomaterials suspension before sonication to improve the dispersion of these ...
Laura Silvestro   +5 more
doaj   +1 more source

Effect of Naphthalene-Based Superplasticizer and Polycarboxylic Acid Superplasticizer on the Properties of Sulfoaluminate Cement [PDF]

open access: yesMaterials, 2021
In order to study what the effect of superplasticizers on the setting time, fluidity and compressive strength of calcium sulfoaluminate cement (CSA) a naphthalene-based superplasticizer (BNS) and a polycarboxylic acid superplasticizer (PC) were selected to interact with CSA pastes and ye’elimite, respectively. X-ray diffraction (XRD), thermogravimetric
Yonghua Wu   +5 more
openaire   +2 more sources

Performance and Compatibility of Phosphonate-Based Superplasticizers for Concrete

open access: yesBuildings, 2017
The paper deals with the effectiveness of an innovative phosphonate-based superplasticizer (PNH) for ready mixed concrete. Concrete specimens were manufactured by considering a constant initial workability, equal to 220 mm slump at the end of the mixing ...
Luigi Coppola   +3 more
doaj   +1 more source

Application areas of phosphogypsum in production of mineral binders and composites based on them: a review of research results [PDF]

open access: yes, 2018
The increase of the consumption of gypsum products in construction industry with a limited amount of natural gypsum deposits requires alternative sources of gypsum-containing raw materials.
Dvorkin, Leonid   +2 more
core   +2 more sources

Structure-property relationships for polycarboxylate ether superplasticizers by means of RAFT polymerization

open access: yes, 2019
Hypothesis: Polycarboxylate ether (PCE) comb-copolymers are widely used as water reducing agents in the concrete industry while maintaining a high fluidity via the polymer adsorption to the cement particles.
De Schutter, Geert   +5 more
core   +1 more source

INFLUENCE OF SILICA COLLOID ON RHEOLOGY OF CEMENT PASTE WITH SUPERPLASTICIZER

open access: yesASEAN Journal on Science and Technology for Development, 2017
Information of rheological behavior of binder paste is important for proportioning high slump concrete mixture at low water to cement ratios. This paper presents experimental data on the rheological property of silica colloid incorporated binder paste ...
T.H. Chuong, P.V. Nga
doaj   +1 more source

Study on the Permeability of Modified Bentonite Slurry in Landfill

open access: yesAdvances in Materials Science and Engineering, 2020
The impermeability of cutoff wall is one of the most important factors affecting the life of landfill. Hence, we used sodium carboxymethyl cellulose to modify bentonite and developed a modified bentonite-cement-fly ash antiseepage slurry with a low ...
Zenan Zhang, Guozhong Dai, Yanmin Sheng
doaj   +1 more source

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