the pore solution of blended cements a review
Phase Development and Pore Solution Chemistry in Ageing
Phase Development and Pore Solution Chemistry in Ageing Blast Furnace Slag-Portland Cement BlendsVolume 127D. E. Macphee M. Atkins P. P. Glassar
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Advances in Cement ResearchICE Virtual Library
Performance of plain and slag-blended cements and mortars exposed to combined chloride–sulfate solution Authors Joseph O. Ukpata P. A. Muhammed Basheer Leon Black Source Advances in Cement Research Volume 30 Issue 8 1 Sep 2018 (371–386)
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Comparative Study of Strength and Corrosion Resistant
Jan 01 2017 · Many researchers have discussed the different types of curing pore structure refinement and permeability characteristics of blended cements by using fly ash slag silica fume and so on 16-19 . The results indicated that blended cement with longer duration has shown strength and other properties equal to those of ordinary Portland cement.
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The pore solution of blended cements A reviewCORE
Download PDF Sorry we are unable to provide the full text but you may find it at the following location(s) https //publications.rwth-aach (external link) https
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PERFORMANCE OF BLENDED CORROSION INHIBITORS FOR
nitrite in cement paste pore solution containing sodium chloride by potentio-dynamic polarization method revealed that the passivity break down at a lower potential in the inhibited solution. In the present study an attempt has been made to investigate the
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Evaluation of Alkalinity of Pore Solution Based on the
"Aspects of the pore solution chemistry of blended cements related to the control of alkali silica reaction." Cem. Concr. Res. 17 . Chappex T. and Scrivener K. (2012a). "The influence of aluminium on the dissolution of amorphous silica and its relation to alkali silica reaction." Cem. Concr. Res. 42 .
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Materials Free Full-Text Effect of Flue Gas
The pore structure of CSAC-GGBFS mixtures blended with different FGDG content hydrated for 120 d is shown in Figure 5. As shown in Figure 5a the pore size ranges of cement pastes blended with different FGDG content are similar to each other 5–1000 nm in total. However the pore size distribution shifts to the left (smaller pores) when the
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Complex Characterization and Behavior of Waste Fired Brick
From 7 to 28 days the change in the threshold pore width (0.36 to 0.16 and 0.97 to 0.18 µm) in blended cement containing 8 wt. and 24 wt. of CzCW gave evidence on the progress of hydration producing the pore size refinement due to coarse pores filling and the threshold pore diameter was reduced to a size comparable with the PC paste.
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Strength and Pore Structure Development of High-Plasticity
This paper focuses on the strength development and pore structure evolution of high-plasticity clay mixtures treated with metakaolin- (MK-) blended ordinary Portland cement (OPC). The unconfined compressive strength ( f cu ) of treated soil mixtures is measured to study the effect of MK replacement. The microstructural study is carried out by mercury intrusion porosimetry (MIP) scanning
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Study of the pore solution and the microstructure of
A study of the chemical composition of the pore solution made by Andersson et al. 1 showed that the pore solution of the cementitious materials is influenced by the type of cement and the mineral addition used. For this purpose they analyzed pore solutions extracted from seven different cement pastes with a W/B (Water/Binder) of 0.5.
Get PriceMaterials Free Full-Text Study on the Pore Structure
Pore structure development in Portland cement fly ash or/and ferronickel slag (FNS) was investigated using mercury intrusion porosimetry and X-ray CT tomography. The progress of hydration was observed using X-ray diffraction (XRD) analysis and compressive strength while durability of concrete was monitored by chloride penetration resistance and chloride profiles.
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Corrosion performance of steel in blended cement pore
Blended cements might change the chemistry of the pore solution and subsequently affect the corrosion of steel in concrete. Pore solutions were extracted analyzed and compared from mortars made of CEM I CEM II CEM III and CEM IV cements. Three combinations of carbonation and chloride states were studied i.e. non-carbonated without chlorides non-carbonated with chlorides and
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The pore solution of blended cements A reviewCORE
Download PDF Sorry we are unable to provide the full text but you may find it at the following location(s) https //publications.rwth-aach (external link) https
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Expression of Cementitious Pore Solution and the Analysis
Sep 23 2018 · The pore solution in the figure was expressed from a fresh ordinary Portland cement paste with a water-to-cement ratio of 0.36. The sample was mixed 10 min before the image was taken. The pore solution is expected to be clear however the color can vary depending on the type of cementitious materials that were used and the age of the sample at
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EBD Test methods to evaluate durability of blended
§ Discussion of the roles of pore structure pore solution composition chemical binding etc. on test results § Definition of common language (e.g. binders) Ø Follow-up work § Drafting a white paper summarizing state-of-the-art methods presented at the workshop
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(PDF) The pore solution of blended cements a review
The pore solution is an essential but often overlooked part of hydrated cements. The composition of the cement pore solution reflects the ongoing hydration processes and determines which solid
Get PriceReaction of siliceous fly ash in blended Portland cement
The present thesis studies the effect of siliceous fly ash on the hydration of blended Port-land cement containing 50 wt of siliceous fly ash. To achieve this goal a multi-method approach using various techniques to characterise the hydration kinetics solid hydration products pore solution and the microstructure has been used.
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Early containment of high-alkaline solution simulating low
Portland cement blended with fly ash and attapulgite clay was mixed with high-alkaline solution simulating low-level radioactive waste at a one-to-one weight ratio. The pastes were adiabatically and isothermally cured at various temperatures and analyzed for phase composition total alkalinity pore solution chemistry and transport properties
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EBD Test methods to evaluate durability of blended
§ Discussion of the roles of pore structure pore solution composition chemical binding etc. on test results § Definition of common language (e.g. binders) Ø Follow-up work § Drafting a white paper summarizing state-of-the-art methods presented at the workshop
Get PricePhase Development and Pore Solution Chemistry in Ageing
Phase Development and Pore Solution Chemistry in Ageing Blast Furnace Slag-Portland Cement BlendsVolume 127D. E. Macphee M. Atkins P. P. Glassar
Get PriceArticle Cement composition s effect on pore solution
Article Cement composition s effect on pore solution composition and on electrochemical behavior of reinforcing steel Amit Kenny 1 and Amnon Katz 2 1 Department of Civil Eng. Shamoon College of Engineering Ashdod Israel amitke sce.ac.il 2 Faculty of Civil Eng. Technion –Israel Institute for Technology Haifa Israel akatz technion.ac.il Correspondence amitke sce.ac.il
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Early containment of high-alkaline solution simulating low
Portland cement blended with fly ash and attapulgite clay was mixed with high-alkaline solution simulating low-level radioactive waste at a one-to-one weight ratio. The pastes were adiabatically and isothermally cured at various temperatures and analyzed for phase composition total alkalinity pore solution chemistry and transport properties
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Effectiveness of corrosion inhibitors in simulated
115 simulated pore solution 116 • Determination of electrochemical impedance spectra in simulated pore solution 117 • Influence of AMA inhibitors in blended cement extract solution 118 Corrosion inhibitors CNI AMA and MFP were added to the different solutions 119 separately.
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Corrosion performance of steel in blended cement pore
Blended cements might change the chemistry of the pore solution and subsequently affect the corrosion of steel in concrete. Pore solutions were extracted analyzed and compared from mortars made of CEM I CEM II CEM III and CEM IV cements. Three combinations of carbonation and chloride states were studied i.e. non-carbonated without chlorides non-carbonated with chlorides and
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The Impact of Tortuosity on Chloride Ion Diffusion in Slag
blended cements exposed to sodium chloride solutions. The causes for the low penetration rate of chloride in slag-blended cementitious materials are discussed considering their pore structure and surface electrical properties. The role of tortuosity on Cl-/OH for the evaluation of chloride induced corrosion was also discussed. 1. Introduction
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Pore solution composition and reinforcement corrosion
Pore solution composition and reinforcement corrosion characteristics of microsilica blended cement concrete Rasheeduzzafar Hussain S.Ehtesham Al-Gahtani A.S. Cement and Concrete Research Vol. 21 Issue.6 1991 Abstract Plain and microsilica blended cement pastes with water-cement ratio of 0.6 were prepared using a 14 C3A cement.
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Effects of superplasticising admixtures used with blended
Sep 17 2015 · When the PCEs were used with blastfurnace cement CEM III/B their specific effects had virtually disappeared. PCE 11 sorbed to a greater rate and the cement paste exhibited a distinct consistency loss because the pore solution had considerably lower sulfate ion content and the zeta potential was more positive.
Get PriceElectrochemical chloride extraction effect on blended cements
Sulfate ionic concentration in pore solution of OPC and blended cements 50 40 Knoop hardness Hk 50 30 40 20 Knoop hardness Hk 0 A/m2 30 10 5 A/m2 20 0 0 A/m2 0 5 10 15 20 25 Distance from cathode mm 10 5 A/m2 Figure 11.
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Blending of pozzolans with Portland cement is of limited
In the large majority of blended cements initial lower strengths can be observed compared to the parent Portland cement. However especially in the case of pozzolans finer than the Portland cement the decrease in early strength is usually less than what can be expected based on the dilution factor.
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