Results 21 to 30 of about 18,482 (315)

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

Effectiveness Assessment of Superplasticizer Admixtures: Case of Self-compacting Concrete Reinforced with Fine Mineral Fillers

open access: yesSelected Scientific Papers: Journal of Civil Engineering, 2022
The use of superplasticizers in concrete production has become a common practice, especially when a high fluidity is required. On the other hand, the risk of segregation and the stability of these mixtures is ensured by the incorporation of a large ...
Oualit Mehena, Irekti Amar, Hami Brahim
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

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

Machine Learning-based Prediction of Porosity for Concrete Containing Supplementary Cementitious Materials [PDF]

open access: yes, 2021
Porosity has been identified as the key indicator of the durability properties of concrete exposed to aggressive environments. This paper applies ensemble learning to predict porosity of high-performance concrete containing supplementary cementitious materials.
arxiv   +1 more source

Compatibility of portland cement and polycarboxylate-based superplasticizers in high-strength concrete for precast constructions [PDF]

open access: yesИнженерно-строительный журнал, 2016
Application of polycarboxylate-based superplasticizers can contribute to the increase of concrete early strength. It makes possible to obtain the concrete of the required strength after heat-steaming treatment with decreasing the isothermal temperature ...
O.M. Smirnova
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

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

Home - About - Disclaimer - Privacy