Results 41 to 50 of about 18,482 (315)

Machine Learning Modelling for Compressive Strength Prediction of Superplasticizer-Based Concrete

open access: yesInfrastructures, 2023
Superplasticizers (SPs), also known as naturally high-water reducers, are substances used to create high-strength concrete. Due to the system’s complexity, predicting concrete’s compressive strength can be difficult. In this study, a prediction model for
Seyed-Ali Sadegh-Zadeh   +6 more
doaj   +1 more source

Characterization of the mesostructural organization of cement particles in fresh cement paste [PDF]

open access: yes, 2016
Comparative study on the mesostructures of fresh cement paste (FCP) in different dispersion mediums was carried out aiming at characterizing the structural organization of cement particles in FCP at a mesoscopic scale and establishing the correlation of ...
Bai, Y, Gao, L, Kong, X, Zhang, Y
core   +1 more source

Effect of polycarboxylate admixture structure on cement paste rheology

open access: yesMateriales de Construccion, 2007
The purpose of the present study was to analyze the effect of the structural differences in four polycarboxylate and polyether admixtures on the rheological properties of cement pastes with different chemical and mineralogical compositions and different ...
M. M. Alonso   +4 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   +1 more source

About influence of some superplasticizers on hydration and the structure of hardened cement paste

open access: yesMATEC Web of Conferences, 2017
Current construction can not be imagined without the use of high-quality mortars and concretes obtained by using high-tech and workable mixtures with lower water content.
Koryanova Yulia, Nesvetaev Grigory
doaj   +1 more source

Efficacy of Available Superplasticizers on Geopolymers

open access: yesResearch Journal of Applied Sciences, Engineering and Technology, 2014
Geopolymer is a novel engineering binder with lower environmental impacts (CO 2 emission, embodied energy and global warming potential) than Ordinary Portland Cement (OPC). Geopolymers can be synthesized from mixing high alkaline activators by industrial by-products such as fly ash and slag as the aluminosilicate source materials.
Nematollahi, Behzad, Sanjayan, Jay
openaire   +2 more sources

Study on rheological properties and regulation of Bayer red mud-based foamed lightweight soil

open access: yes工程科学学报
Foamed lightweight soil has become an effective material to solve subgrade problems such as uneven settlement in the traffic field because of its advantages of light weight, high strength, good fluidity, and high construction efficiency.
Chuanyi MA   +4 more
doaj   +1 more source

Superplasticizers: properties and applications in concrete

open access: yes, 1998
The preparation of this book was undertaken with the aim of integrating the chemistry and application of concrete superplasticizers, in a way, it is hoped, that will be relevant to conrete engineers and technologists, and useful to researchers and students. The book is divided into 14 chapters.
Ramachandran, V. S.   +3 more
openaire   +3 more sources

Effect of superplasticizers on the hydration kinetic and mechanical properties of Portland cement pastes

open access: yesJournal of Advanced Research, 2012
Hydration of ordinary Portland cement in the presence of two different types of superplasticizers namely sodium lignosulfonate (LS) and naphthalene sulfonate-formaldehyde condensate (NSF) was studied using different experimental techniques ...
Safaa M.A. El-Gamal   +2 more
doaj   +1 more source

From Ancient Techniques to Modern Solutions: In Situ Synthesis of C‐S‐H for Sandstone Conservation

open access: yesAdvanced Science, EarlyView.
Herein, this work presents a paleo‐inspired approach to synthesizing and optimizing C‐S‐H‐based grouting mortars for conserving the sandstone of Beishan Grottoes, Dazu Rock Carvings, China. By achieving an optimal recipe compatible with natural sandstone, this work demonstrates the pivotal role of hydrogen bonding in the adhesion between C‐S‐H mortars ...
Mengjun Jia   +9 more
wiley   +1 more source

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