Results 21 to 30 of about 61,746 (263)

In situ rheometry of concentrated cellulose fibre suspensions and relationships with enzymatic hydrolysis [PDF]

open access: yes, 2013
This work combines physical and biochemical analyses to scrutinize liquefaction and saccharification of complex lignocellulose materials. A multilevel analysis (macroscopic: rheology, microscopic: particle size and morphology and molecular: sugar product)
Lombard, Eric   +8 more
core   +1 more source

The analytical dependence of the resistance force to digging with a bulldozer blade on the main influencing factors [PDF]

open access: yesE3S Web of Conferences, 2023
The criteria for the similarity of the process of digging soil with a bulldozer blade are determined based on the use of the principles of the theory of similarity and modeling. When determining the similarity criteria, a rheological model of the process
Khankelov T.K.   +2 more
doaj   +1 more source

Study of bearing capacity of vibratory pile applying acceleration record

open access: yesJournal of Civil Engineering and Management, 2014
The article focuses on the method for evaluation of ultimate bearing capacity for a vibratory pile having acceleration data recorded during the tests. The simulation vibratory pile installation test was performed in the testing stand.
Kęstutis Kelevišius   +4 more
doaj   +1 more source

Rheological Model of Concrete Shrinkage

open access: yes, 2021
This paper discusses the shrinkage rheological model of high-performance concrete with a compressive strength of 60 MPa. This is based on experimental research in Indonesia. Three specimens measuring 150 mm × 150 mm × 600 mm were used.
Chatarina Niken   +2 more
core   +1 more source

Rheological Behavior of Rockmass Supported with Rockbolts Based on Viscoelastic Analysis Method

open access: yesMathematics, 2018
In this paper, we present the viscoelastic solutions for rockmass supported with discretely mechanically or frictionally coupled (DMFC) rockbolts to reveal the coupling rheological mechanisms.
Gang Wang   +4 more
doaj   +1 more source

Vom Berg and Hahn–Eyring Drilling Fluid Rheological Models

open access: yesEnergies, 2022
This article presents rheological models of fluids used in the drilling practice. It discusses the principles of determining drilling fluid rheological parameters based on data acquired from measurements by means of viscometers used in the drilling ...
Rafał Wiśniowski   +2 more
doaj   +1 more source

Test protocol and rheological model influence on determining the rheological properties of cement pastes

open access: yes, 2021
The rheological characterization of cement pastes, mortars and concretes considers the rheological parameters of complex suspensions, composed by different materials, which interact both chemically, and physically.
Maciel, G. F. [UNESP]   +1 more
core   +1 more source

Analysis of Rheological Models of Selected Cement Slurries [PDF]

open access: yesActa Montanistica Slovaca, 2004
Cement slurries become more and more widely applicable in reinforcing and strengthening the rock mass. The processes taking place in fresh cement slurries were presented and their complex character analysed. The equations describing rheological models, e.
Stryczek Stanislaw   +2 more
doaj  

Influence of Phosphorus on the Fluid Variability Characteristics of Sediment-laden Flow

open access: yesShuitu Baochi Xuebao
[Objective] This study aims to explore the effect of phosphorus on the fluid variability characteristics of sediment-laden flows. [Methods] A self-made double vertical tube rheometer was used to study the influence of phosphorus on fluid types ...
ZHANG Yuanyuan   +5 more
doaj   +1 more source

A New Rheological Model for Phosphate Slurry Flows

open access: yes, 2023
In this paper, a new rheological model for the flow of phosphate-water suspensions is proposed. The model’s ability to replicate the rheological characteristics of phosphate-water suspensions under different shear rate conditions is evaluated using
Souhail Maazioui   +3 more
core   +1 more source

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