Results 11 to 20 of about 4,819 (215)

The flowability and high-temperature resistance of manufactured sand concrete: An exploration for high-rise buildings

open access: yesMaterials Research Express, 2023
The depletion of natural concrete aggregates, e.g., river sands, is a gradual process, and hence, manufactured sand concrete (MSC) is widely used in various construction projects.
Zhiping Ren   +6 more
doaj   +1 more source

A two-fold strategy towards low-carbon concrete

open access: yesRILEM Technical Letters, 2023
Concrete is by a substantial margin the most widely used construction material. Projections indicate that the demand for concrete it will continue to increase to sustain the development of emerging economies. This paper presents a new perspective of low-
Franco Zunino
doaj   +1 more source

Effect of Functional Polycarboxylic Acid Superplasticizers on Mechanical and Rheological Properties of Cement Paste and Mortar

open access: yesApplied Sciences, 2020
Modern engineering practices require that polycarboxylic acid high-performance superplasticizers have good adaptability to various environments and materials, which indicates the importance of producing functional polycarboxylic acid superplasticizers ...
Wuju Xun   +6 more
doaj   +1 more source

Research on Flocculation of Cement Particles in Water [PDF]

open access: yesE3S Web of Conferences, 2021
Nowadays, workability is absolutely necessary for piping concrete, which is influenced by characteristics of structure of fresh cement paste. In this paper, the movement of particles in electric field and flocculent units at different W/C were observed ...
Zuo Yanfeng, Zhang Yijie, Wang Dongmin
doaj   +1 more source

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

open access: yesE3S 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   +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

Distribution of corrosion products at the steel-concrete interface of XD3 concrete samples

open access: yesMagazine of Civil Engineering, 2020
This research paper deals with the steel/concrete interface of concrete samples with and without green inhibitor (orange peel extract) and with different two types of superplasticizers (Mapei Dynamon SR 31 and Oxydtron) after an 18 months exposure in ...
Shaymaa Abbas Abdulsada   +2 more
doaj   +1 more source

A Mini Review on Properties of Portland Cement Concrete with Geopolymer Materials as Partial or Entire Replacement

open access: yesInfrastructures, 2021
The main aim of this paper is to review recent studies over the past 10 years investigating the influencing factors for improving the mechanical properties of concrete.
Kong Fah Tee, Sayedali Mostofizadeh
doaj   +1 more source

Repulsion forces of superplasticizers on ground granulated blast furnace slag in alkaline media, from AFM measurements to rheological properties

open access: yesMateriales de Construccion, 2012
The electrostatic and steric repulsion induced by different superplasticizers on ground granulated blast furnace slag in alkaline media have been studied.
M. Palacios   +7 more
doaj   +1 more source

Hydrophilicity as a measure of the efficiency of the superplasticisers

open access: yesBudownictwo i Architektura, 2013
This paper presents the results of chemical structural investigations of four new-generation superplasticizers (denoted here as SP-A through SP-M2) used in concrete production engineering. The commercial product samples, the gel permeation chromatography
Elżbieta Janowska-Renkas
doaj   +1 more source

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