Physico-Chemical Disintegration of Concrete
Physico-Chemical Disintegration of Concrete Floyd O. Slate Research Chemist Joint Highway Research Project Purdue University The purpose of this paper is to list and discuss briefly some of the causes of chemical and physico-chemical disintegration of concrete and to point out some methods that can be used to study these causes.
Get PricePhysico-Chemical Disintegration of Concrete
Physico-Chemical Disintegration of Concrete Floyd O. Slate Research Chemist Joint Highway Research Project Purdue University The purpose of this paper is to list and discuss briefly some of the causes of chemical and physico-chemical disintegration of concrete and to point out some methods that can be used to study these causes.
Get PriceRheological studies on the flow behavior of two-phase
Fresh concrete as well as mortar can be considered as a two-phase material with solid particles dispersing in non-Newtonian fluid. In this study rheological models were
Get PriceModification of fresh state properties of Portland cement
are widely used since they improve both rheological property and water retention capacity of the mortars. The present study examines the influence of chemical composition and structure of guar gum derivatives on water retention capacity (WR) and rheological behavior of fresh state Portland-based mortars. The investigation
Get PriceStudy of Rheological Parameters of Lime-Metakaolin Paste
28 (2013) studied the rheological parameters (viscosity and yield stress) according to Bingham model of lime mortars. In his work it was shown that the viscosity and yield stress in mortars decreased as the superplastisizer content increased. However very few works have investigated the rheology of cement pastes using the dynamic
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Corpus ID . Rheology of geopolymer Comparative study between portland cement and metakaolin based geopolymer inproceedings Favier2013RheologyOG title= Rheology of geopolymer Comparative study between portland cement and metakaolin based geopolymer author= A. Favier and Julie Hot and G. Habert and J.-B. d Espinose de Lacaillerie and N. Roussel year= 2013
Get PriceStudy of Rheological Parameters of Lime-Metakaolin Paste
28 (2013) studied the rheological parameters (viscosity and yield stress) according to Bingham model of lime mortars. In his work it was shown that the viscosity and yield stress in mortars decreased as the superplastisizer content increased. However very few works have investigated the rheology of cement pastes using the dynamic
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rheological model. 2.3 Mortar rheology Once defined the paste composition the second step of the Repette-Melo methodology is the definition of mortar phase. Thus the content of fine aggregate relative to the total volume of cement and the superplasticizer content were defined. Mortar mixtures were prepared and the tests with mini-cone of abate-
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Abstract This study is a contribution to the study of the rheological behavior of cement suspensions. An oil well is drilled cased cemented and set completion. The well drilling is done in several phases then at various diameters to isolate the following problems like land fragile subsidence and poorly
Get PriceRheological studies on the flow behavior of two-phase
Fresh concrete as well as mortar can be considered as a two-phase material with solid particles dispersing in non-Newtonian fluid. In this study rheological models were
Get PriceCONFERENCE SCC 2007 GHENT INFLUENCE OF PHYSICO
on the properties of mortars. Some relationship between the physico-chemical properties of the fillers and the properties of mortars were brought forward. 1. INTRODUCTION To ensure suitable rheological properties for Self-Compacting Concrete (SCC) mineral additions are commonly used. In this research project six limestone fillers (noted F1 to
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the cement. The present study examines the influence of chemical composition and structure of guar gum derivatives on fresh state properties of Portland cement-based mortars such as water retention capacity (WR) and rheological behavior of fresh state Portland-based mortars.
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Sep 19 2018 · Ferraris gave an overview of the commonly tests (14 test methods) used to characterize concrete rheology including slump penetration Tattersal two-point tests etc. Rheological studies were executed on admixed cement-based mortars.
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In addition effect of nanosilica on the properties of cement mortars containing waste glass seems to be understudied. The aim of this study is to evaluate the possibility of manufacturing sustainable and self-cleaning cement mortars with use of commercially available nanomaterials and maximum possible brown soda-lime waste glass content.
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strength of cement mortars with 30 by mass of phosphorus slag. Hydration heat X-ray diffraction and scanning electron microscopy were used to study the microstructure of cement pastes and mortars with 30 by mass of phosphorus slag and the chemical activator. Results showed that the setting
Get PriceCONFERENCE SCC 2007 GHENT INFLUENCE OF PHYSICO
on the properties of mortars. Some relationship between the physico-chemical properties of the fillers and the properties of mortars were brought forward. 1. INTRODUCTION To ensure suitable rheological properties for Self-Compacting Concrete (SCC) mineral additions are commonly used. In this research project six limestone fillers (noted F1 to
Get PriceRheological behavior study of plastic shrinkage and
rheological model. 2.3 Mortar rheology Once defined the paste composition the second step of the Repette-Melo methodology is the definition of mortar phase. Thus the content of fine aggregate relative to the total volume of cement and the superplasticizer content were defined. Mortar mixtures were prepared and the tests with mini-cone of abate-
Get PriceMortar and Concrete Analysis Forensic Aspects Chemical
While dealing with forensic evidence related to structural failure or to know the reason behind it cement mortar and concrete analysis is performed. In Forensic Mortar and Concrete Analysis chemical tests such as the percentage of cement in a mortar EDTA titration test is done for mortar analysis while for concrete analysis silica test chlorine test and other tests for adulteration is
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penetration test rheological test with Couette s geometry and mechanical tests) in order to quantify the influence of STPP dosage (0 to 50 g/L) on the physico-chemical rheological and microstructural evolution of cement pastes. Fig. 1. Effects of STPP on cement particles dispersion (A)
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The rheological test was carried out at 5 30 60 and 120 min after mixing of cement paste. The rheological test established that modification of cement pastes by MWCNT dispersion in dosage 0.25 leads to the decrease of yield stress by 30.7 and increase of plastic viscosity by 29.6 .
Get PriceModification of fresh state properties of Portland cement
are widely used since they improve both rheological property and water retention capacity of the mortars. The present study examines the influence of chemical composition and structure of guar gum derivatives on water retention capacity (WR) and rheological behavior of fresh state Portland-based mortars. The investigation
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Study of rheological properties of concrete mixtures based on modified cement systems in order to determine process parameters. Methodology. To study structural-mechanical properties of modified concrete mixtures of different consistency at their horizontal vibrating displacement an oscillatory viscometer was designed. Results. The optimization of the process of vibration displacement of
Get PriceChemical shrinkage of cement pastes and mortars at very
Chemical shrinkage of cement pastes and mortars at very early age Effect of limestone filler and granular inclusions M. Bouasker a P. Mounanga a P. Turcry b A. Loukili c A. Khelidj a a GeM UMR CNRS 6183Research Institute on Civil Engineering and Mechanics IUT Saint-Nazaire 58 rue Michel Ange BP 420 F-44606 Saint-Nazaire cedex France
Get PriceModification of fresh state properties of Portland cement
are widely used since they improve both rheological property and water retention capacity of the mortars. The present study examines the influence of chemical composition and structure of guar gum derivatives on water retention capacity (WR) and rheological behavior of fresh state Portland-based mortars. The investigation
Get PriceMortar and Concrete Analysis Forensic Aspects Chemical
While dealing with forensic evidence related to structural failure or to know the reason behind it cement mortar and concrete analysis is performed. In Forensic Mortar and Concrete Analysis chemical tests such as the percentage of cement in a mortar EDTA titration test is done for mortar analysis while for concrete analysis silica test chlorine test and other tests for adulteration is
Get PriceThe Rheology of Cement PasteAZoBuild
Oct 30 2019 · Concrete rheology is a specific branch of rheology that relates to the concrete and mortar workability properties of cement paste. Less water used in a concrete mix can stimulate an increase in mechanical properties of the cement paste. Despite this increase lessening the water application can result in difficult mixing of the product and
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The present study examines the influence of chemical composition and structure of guar gum derivatives on water retention capacity (WR) and rheological behavior of fresh state cement-based mortars. The investigation was also completed by adsorption isotherms.
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rheological behavior of fresh mortars Van-Tien Phan To cite this version Van-Tien Phan. Relationship between the adhesive properties and the rheological behavior of fresh mortars. Other. École normale supérieure de CachanENS Cachan 2012. English. NNT 2011DENS00YY. tel
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Mini-cone tests on cement mortars and rheological tests on cement pastes under different temperatures (0 to 60 °C) were conducted to characterize the development of the fluidity of fresh cement mixtures over time. In addition total organic carbon tests were performed to quantify the adsorption amount of superplasticizers on the cement surface.
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Study on microstructure rheology and thermal stability of cement epoxy asphalt mortar multiphase materials Xinglong Fang Zhiming Chen Zhen Jiao Guomin Xiao and Li Shao THE COMPARATIVE ADVANTAGES OF ELECTRICITY STEAM AND COMPRESSED AIR FOR MINING PURPOSES.
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