Cementitious Paste Setting Using Rheological And

(PDF) Cementitious paste setting using rheological and

The measurement of the evolution of mechanical characteristics of concrete during the setting period is needed to control the schedule of construction (for example, placement and formwork removal)

Cementitious Paste Setting Using Rheological and Pressure

This study monitored the cement paste setting period through the variation of intrinsic material parameters (yield stress and plastic viscosity) and the hydraulic pressure on the forms The setting was monitored by rheological (stress growth and shear rate sweep) and hydraulic pressure measurements

Cementitious Paste Setting Using Rheological and Pressure

Cementitious Paste Setting Using Rheological and Pressure Measurements For construction schedules, such as placement and formwork removal, to be controlled, how mechanical characteristics of concrete evolve during the setting period needs to be measured

Rheological properties of cement pastes: A discussion of

The objective of this paper is to examine the evolution of rheological properties (eg yield stress) and to evaluate the use of these properties as a method to monitor structure formation and mechanical property development (ie setting) in cementitious materials

Influence of particle size distributions on yield stress

The rheological properties of mixture #9, with the highest total particle surface area and highest cement particle density, could not be measured due to the extreme stiffness of its paste Rheological properties of the prepared cement pastes were measured using a rotational rheometer [17] , [18]

Amziane, S and CF Ferraris, Cementitious paste setting

This study proposes a continuous method for predicting the yield stress development from mixing until the final setting point Samples prepared with water to cement ratios (w/c) of 03, 035 and 04 are tested using a vane in cup rheometer, a Vicat needle and a non …

Rheological properties of cement pastes: A discussion of

The rheological properties of cemented paste backfill (CPB) significantly influence the material’s transportability, and these properties are strongly affected by the material’s particle size

Rheology | Cement Science

The rheology of cementitious material paste is complex and difficult to be investigated One value of rheology is yield stress The best method to measure the yield stress in …

Overview of ACI 2381 R-08 Report on Measurements of

Report on Measurements of Workability and Rheology of Using rheological measurements to solve problem with Amziane S, Ferraris CF “Cementitious Paste Setting Using Rheological and Pressure Measurements”, ACI Materials Journal, vol 104 #2, 2007 pp 137-145

In situ measurement of the rheological properties and

Various factors influence the rheology of cementitious pastes, with the most important being the mixing protocol, mixture proportions, and mixture composition This study investigated the influence of ground-granulated blast-furnace slag, on the rheological behavior of cementitious pastes

Estimation of the Yield Stress of Cement Pastes from

Abstract This study proposes a continuous method for predicting the yield stress development from mixing until the final setting point Samples prepared with water to cement ratios (w/c) of 03, 035 and 04 are tested using a vane in cup rheometer, a Vicat needle and a non contact electrical resistivity machine (NC-ERM)

Rheological properties of cement pastes: A discussion of

The objective of this paper is to examine the evolution of rheological properties (eg yield stress) and to evaluate the use of these properties as a method to monitor structure formation and mechanical property development (ie setting) in cementitious materials

In situ measurement of the rheological properties and

Variation in the rheological properties of the cementitious slurry were studied using rheometry and ultrasonic wave reflection to understand the effects of various iron oxides (magnetite, hematite, ferrihydrite, and goethite) during the cement setting and stiffening processes

Evaluation of High-Volume Fly Ash Mixtures (Paste and

Flow tests (ASTM C1437), modified unit weight using the base of the rollameter, setting time (ASTM C403), and compressive strength (ASTM C109) at the ages of 3, 7, 28, 56, 91, and 119 days were carried out (3–5) Three cubes were tested at each age Paste mixtures were prepared according to …

Concrete Laboratory Overview | FHWA

IC was found to be a good tool for setting time and compressive strength predictions at early ages The rheological methodology used in this study may give an indication of setting delay, The rate of change of yield stress may be a good predictor of setting behavior, but more research is needed to confirm this

Department of Civil Engineering and Engineering Mechanics

itored using rheological and ultrasonic re ection measurements The rheological measurements comprised of measuring the increase in elastic modulus and yield stress Ultrasonic measurements were performed using horizontally polarized shear waves (SH) re ected o of the hydrating cement paste

A new look at the measurement of cementitious paste

A new look at the measurement of cementitious paste setting by Vicat test A new look at the measurement of cementitious paste setting by Vicat test Sleiman, Hassan; Perrot, Arnaud; Amziane, Sofiane 2010-05-01 00:00:00 The Vicat test is a standard test for measuring the setting times of cement paste and mortar The physical background of the

Characterization of yield stress development of cement

A mathematical relationship between the yield stress of cement paste, diameter of spread and electrical resistivity characteristic gradient was developed The equation developed can be used as an alternative method to estimate yield stress of cement paste

Effects of Iron Oxides on the Rheological Properties of

Variation in the rheological properties of the cementitious slurry were studied using rheometry and ultrasonic wave reflection to understand the effects of various iron oxides (magnetite, hematite, ferrihydrite, and goethite) during the cement setting and stiffening processes

The method to measure the plastic viscosity of cement paste

In the previous post, I introduced the protocol to measure the yield stress of cement paste I would like to share the method how to measure the plastic viscosity of cement paste The principle determine the plastic viscosity of cement paste is using the relationship between shear rate and shear stress

Extrudability of Cement-Based Materials

We provide a method to measure the extrusion time window using penetration resistance (PR)PR is used to measure the setting time of concrete in the ASTM Standard C 40315 PR has been related to the rhe-ological parameters of a cementitious paste16 The penetration test has been used to determine the extrudability of cementitious pastes short-

Cement and Concrete Research - College of Engineering

needle [1], rheological measurement [2],chemicalshrinkage[3], methods to identify initial setting time of cementitious materials based on certain features on the ultrasonic velocity curves Those cement paste at early ages, which relies on the solid microstructural

Hydrating cement pastes: Novel rheological measurement

Perrot, and S Amziane, “ A new look at the measurement of cementitious paste setting by Vicat test,” Cem Concr Res Subramaniam, K V, and X Wang, “ An investigation of microstructure evolution in cement paste through setting using ultrasonic and rheological measurements,” Cem Concr

TECHBRIEF Evaluation of High-Volume Fly Ash Mixtures

60 percent) Table 1 shows a summary of the paste and mortar mixtures A water-cementitious materials (w/cm) ratio of 040 was used for all the mixtures Mortar mixtures were mixed following ASTM C305, except for the mixer requirements(2) Flow tests (ASTM C1437), modified unit weight using the base of the rollameter, setting time (ASTM C403), and

TECHBRIEF Evaluation of High-Volume Fly Ash Mixtures

60 percent) Table 1 shows a summary of the paste and mortar mixtures A water-cementitious materials (w/cm) ratio of 040 was used for all the mixtures Mortar mixtures were mixed following ASTM C305, except for the mixer requirements(2) Flow tests (ASTM C1437), modified unit weight using the base of the rollameter, setting time (ASTM C403), and

Author's personal copy - NIST

cementitious materials and mineral and chemical admixtures were selected to be used in performance of a wide range of measurements In this paper, three techniques were evaluated to determine the setting time of cement pastes; rheological properties, chemical shrinkage, and the Vicat needle 11 Rheological properties

Adaptive performance of cement-based materials using a

Furthermore the magnetic particles used in this research to create the MR cement paste did not have any effect on cement hydration products or on compressive strength results It was shown that the rheological behavior of cement paste could even be adapted to simulate "setting" behavior when an MR-based approach is used

Physical Characterization of Cementitious Materials on

affects the rheological properties, including shear thinning and thixotropy, and the hydration process This paper attempts to measure the mechanical property and the coagulation of cement particles according to the mix proportions of cement paste

The yield stress of cement pastes as obtained by different

The dependency of cement paste rheological para - meter evolution on the hydration kinetics of cement was described in Quanji [6] and its rate is dictated by the main compounds of the cement clinker One can find many examples of experimental observations of changes in the rheological properties of cement paste

Review of Sustainability in Self-compacting Concrete: the

assessed on both rheological and fresh properties of self-compacting concrete Naik et al [6] assessed the structural properties of two classes of fly ash, using 15% and 25% by mass of class F and class C, respectively The main purpose of the research was to evaluate the time of setting…

Yield Stress and Viscosity | Shear Stress | Viscosity

Example of applications Use of gyratory tester to measure workability of no-slump concrete Using rheological measurements to solve problem with flooring grouts Measuring batch-to-batch consistency of self-consolidating concrete Troubleshooting self-consolidating concrete mixtures

Time Dependent Rheological Response of Composite Binders

The first phase of the work investigates the influence of supplementary cementitious materials (SCM) in combination with ordinary Portland cement (OPC) on the rheological properties of fresh paste with and without the effect of superplasticizers Yield stress, plastic viscosity and storage modulus are the rheological parameters which were evaluated

Rheological Properties of Fresh Cement Pastes | SpringerLink

Rheological properties of fresh cement pastes Bellotto M (2013) Cement paste prior to setting: a rheological approach Cem Concr Res 52(10) Lee J, Christensen BJ (2005) Monitoring the setting behavior of cementitious materials using one-sided ultrasonic measurements

Rheology and Hydration of Cementitious Slurries | Volume 5

In this paper, experimental results at 3 different temperatures show that a 50/50 blend of Type I portland cement and slag cement at a 045 water-cementitious ratio has similar rheological and hydration properties as the reference system (Type I portland cement paste)

Advances in Materials Science and Engineering - Hindawi

Advances in Materials Science and Engineering is a peer-reviewed, Open Access journal that publishes original research articles as well as review articles in all areas of …

Investigation on Rheology of Oil Well Cement Slurries

vi 4 Shahriar, A, and Nehdi, M (2011) Artificial intelligence model for rheological properties of oil well cement slurries incorporating supplementary cementitious materials Submitted to Advances in …

Rheological, Chemical and Mechanical Properties of

Rheological, Chemical and Mechanical Properties of Cementitious Materials with Nanoclays and Diutan Gum Ma, Siwei Cement has three sequential states in most applications: fluid, setting and hardened This thesis focuses on the effect of nanoclays and diutan gum on rheological, chemical and mechanical properties corresponding to the three states

Sealing of cracks in cement using microencapsulated sodium

Sodium silicate reacts with the calcium hydroxide in hydrated cement paste to form calcium-silicate-hydrate gel that fills cracks The effect of microcapsule addition on rheological and mechanical properties of cement is reported

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