Results 11 to 20 of about 18,482 (315)

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

The Effect of Superplasticizers on Eco-friendly Low-Energy One-Part Alkali-Activated Slag

open access: yesInternational Journal of Concrete Structures and Materials, 2023
One-part alkali-activated materials (OP-AAM) have become a promising binder with low carbon and energy requirements associated with superior mechanical and durability characteristics.
M. Refaie   +3 more
semanticscholar   +1 more source

Interlayer bonding investigation of 3D printing cementitious materials with fluidity retaining polycarboxylate superplasticizer and high dispersion polycarboxylate superplasticizer [PDF]

open access: yesConstruction and Building Materials (2022), 2021
Proposed special requirements exist for the rheological properties and time varying characteristics of 3D printing cementitious materials (3DPC). In this study, high dispersion polycarboxylate superplasticizer (HD PC) and fluidity retaining polycarboxylate superplasticizer (FR PC) were used to control the rheological behaviors of 3DPC.
arxiv   +1 more source

Tunable discontinuous shear thickening in capillary flow of MR suspensions [PDF]

open access: yesJournal of Intelligent Material Systems and Structures, SAGE Publications, 2021, 32 (12), pp.1349-1357, 2021
Very concentrated suspensions of iron particles in water or ethylene glycol can be obtained thanks to the use of superplasticizer molecules used in cement industry. At high volume fractions, these suspensions show a discontinuous shear thickening which was thoroughly characterized in rotational geometries.
arxiv   +1 more source

Interval type‑2 fuzzy aggregation operator in decision making and its application [PDF]

open access: yes, 2021
Type-2 fuzzy sets (T2FSs) can deal with higher modeling and uncertainties which exist in the real-world application, specifically in the control systems.
Broumi, Said   +3 more
core   +1 more source

The impact of superplasticizers on the radiation changes in Portland cement stone and concretes [PDF]

open access: yesИнженерно-строительный журнал, 2017
The authors have estimated the effect of advanced superplasticizers of types Muraplast, Reamin, Weiss SM, Polyplast SP-1 and Melflux on radiation changes in Portland cement stone and concretes of radiation protection, based on experimental data from ...
A.V. Denisov
doaj   +1 more source

ENERGY-SAVING CHAMBER IN PRODUCTION OF BUILDING MATERIALS AND PRODUCTS [PDF]

open access: yesJournal of Engineering Science (Chişinău), 2021
This paper presents the results of a study of the compressive strength of concrete in a cyclic solar chamber. The analysis of the existing types of industrial solar chambers is carried out and the main structural elements are considered.
ZAVOLOKA, Michael   +3 more
doaj   +1 more source

Progresses in Synthesis of Polycarboxylate Superplasticizer [PDF]

open access: yesAdvances in Civil Engineering, 2020
The prerequisite to synthesize PCE was to prepare new macromonomers with controlled molecular mass, adjustable hydrophilic‐lipophilic groups, long‐chain alkyl groups, and large terminal hydroxyl groups as well. Structural modifications in the molecular scale of polycarboxylate superplasticizer (PCE) would lead to changes in properties of dispersion and
Shuncheng Xiang, Yingli Gao, Caijun Shi
openaire   +3 more sources

Utilization of Poly(Polyvinyl Alcohol-g-2-Ethylhexyl Acrylate) as Admixture for Mortar [PDF]

open access: yes, 2020
We investigated the physico-mechanical properties of mortar mixed with copolymers based on polyvinyl alcohol (PVA) and 2-ethylhexyl acrylate (2-EHA) and synthesized by grafting using ammonium persulfate (APS) as an initiator.
Bekbayeva, Lyazzat   +3 more
core   +1 more source

Effect of Superplasticizers to Enhance the Properties of Concrete

open access: yesDESIGN CONSTRUCTION MAINTENANCE, 2022
This study aimed to study the effects of asuperplasticizing admixture, namely, Sikament-NN superplasticizer, on concrete properties, such as workability and compressive strength.
Salahaldein Alsadey, A. Omran
semanticscholar   +1 more source

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