effect of inorganic salts on pore structure of cement paste
effect of inorganic salts on pore structure of cement paste

EFFECT OF INORGANIC SALTS ON DEGREE OF HYDRATION AND PORE ,

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The results show that CaCl2,Na2SO4 and NaNO2 can improve the hydration of cement The accelerating effect of CaCl2 is dominant,compared to the other salts CaCl2 can also reduce the porosity of the coarse pores and capillary pores of the pastes,and Na2SO4 can increase the porosity of the coarse pores in cement past...

APPLICATION OF IMAGE ANALYSIS TO ASSESSING CRITICAL PORE ,

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On the basis of mathematical morphology, the pore size distribution is characterised and the critical pore size is determined for cement paste at different hydration time The influence of image resolution is investigated The permeability of cement paste can be predicted according to General Effective Media GEM theory...

how salt damages concrete

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The acidic reaction attacks the concrete paste and aggregate, weakening the structure and strength of the concrete It also increases the pore size, allowing additional water and chemicals into the concrete, which can exacerbate ,...

The Influence of Pore Structure on the Properties of ,

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The Influence of Pore Structure on the Properties of Cement Paste Initial Observations about Research-in-progress - Volume 137 Skip to main content Accessibility help We use cookies to distinguish you from other users and to provide you with a better experience on our websit...

Effect of Pore Size, Lubricant Viscosity, and Distribution ,

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30-01-2019 0183 32 The fabrication of slippery liquid-infused porous surfaces SLIPS usually requires the use of structured substrates, with specifically designed micro- and nanoroughness and complementary surface chemistry, ideally suited to trap lubricants It is not yet established whether a random roughness, with a range of pores with a variable size reaching deep into ,...

PDF Influence of pore solution chemistry on shrinkage of ,

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from cement to cement depending on t he pore solution chemistry Changes in the composition of the pore solution can cons equently influence moisture loss and ,...

Effect of desulphurised waste on long

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23-05-2021 0183 32 past Increasing the amount of SDW leads to an increase in the pore volume of the paste There is no clear trend on the effect of SDW on the size of the por 1 Introduction The porosity and pore size distribution of cement based materials have a major influence on their mechanical and durability properti Mechanical and durability...

Effect of Inorganic Salts on Pore Structure of Cement ,

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Inorganic salts are important admixtures usually used in cold weather concrete As research basic of influence of salts on concrete durability, effects of inorganic salts on pore structure of cement paste were studied in this paper, and possible implications of concrete property with pore structure was also analyzed Pore structure of paste added CaCl2, NaCl, Na2SO4, ,...

The interaction of pH, pore solution composition and solid ,

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The interaction of pH, pore solution composition and solid phase composition of carbonated blast furnace slag cement paste activated with aqueous sodium monofluorophosphate Author Kempl, J Copuroglu, O Faculty Civil Engineering and Geoscienc Department Structural Engineering Date 2015-06-17 Abstract...

Effect of superplasticisers on adsorption, rate of cement ,

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This paper presents an experimental study on the effect of three superplasticisers, polycarboxylate PCE , naphthalene SNF and a newly developed modified lignosulphonate PLS , on admixture adsor....

Inorganic and organomodified nano

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Papatzani and Paine Inorganic and organomodified nano-montmorillonite dispersions Nanocomposites Nanocomposites 2017 VOL 3, NO 1 3 surfactants or modifiers, such as alkylammonium salts10,11 Recent research published on the effect of NMt in cement for -...

Carbon Capture and Utilization by mineralization of cement ,

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27-03-2020 0183 32 The impact of the carbonated paste on the hydrates assemblage in a composite cement comprising cement clinker, the carbonated paste and 5 of anhydrate was predicted by the thermodynamic model as ....

Reinforcing Effects of Graphene Oxide on Portland Cement Paste

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In this experimental study, the reinforcing effects of graphene oxide GO on portland cement paste are investigated It is discovered that the introduction of 003 by weight GO sheets into the cement paste can increase the compressive strength and tensile strength of the cement composite by more than 40 due to the reduction of the pore structure of the cement paste...

EFFECT OF INORGANIC SALTS ON DEGREE OF HYDRATION AND PORE ,

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Article EFFECT OF INORGANIC SALTS ON DEGREE OF HYDRATION AND PORE STRUCTURE OF CEMENT PASTES Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto stood alone to support the generation of ideas By linking the information ,...

Using the negative hydration of inorganic salt ions to ,

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15-11-2021 0183 32 Effect of inorganic salt on plastic viscosity coefficient and yield stress of AAS paste is shown in Fig 6 It can be seen from Fig 6 a and Fig 6 b that compared with the one without inorganic salt, AAS paste with the four inorganic salts show the smaller yield stress and plastic viscosity coefficient except Ba NO 3 2...

Effect of inorganic salts on degree of hydration and pore ,

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Download Citation Effect of inorganic salts on degree of hydration and pore structure of cement pastes The pore structures of cement paste ,...

Concrete Scientific Principles

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The importance of concrete in modern society cannot be overestimated Look around you and you will find concrete structures everywhere such as buildings, roads, bridges, and dams There is no escaping the impact concrete makes on your everyday life So what is it? Concrete is a composite material which is made up of a filler and a binder...

Effect of inorganic salts on pore structure of cement ,

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Article Effect of inorganic salts on pore structure of cement paste Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto stood alone to support the generation of ideas By linking the information entered, we provide opportunities to make unexpected discoveries ,...

Effect of inorganic salts on pore structure of cement ,

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Article Effect of inorganic salts on pore structure of cement paste Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto stood alone to support the generation of ideas By linking the information entered, we provide opportunities to make unexpected discoveries and ,...

Effects of carbonation on pore structure and diffusional ,

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01-07-1997 0183 32 Steady-state diffusion kinetics of dissolved oxygen and chloride ions were studied in well-cured, partially dried, non-carbonated and fully carbonated specimens of OPC, OPC/30 PFA and OPC/65 BFS past Pore size distribution, total porosity and coarse capillary porosity data for the specimens ....

EFFECTS OF CARBONATION ON PORE STRUCTURE AND ,

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01-07-1997 0183 32 The diffusion resistances of all the materials were adversely affected by pre-drying and carbonation, but the effects were considerably more severe for the blended cements than for the OPC This was associated with coarsening of the pore structures of the various pastes to differing extents as a result of pre-drying and carbonation...

Influence of Cellulose Filaments on Cement Paste and ,

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This study investigates the influence of a new type of nanocellulose materials, namely, cellulose filaments CF , on the properties of cement pastes and self-consolidating concrete SCC CFs were found to alter mixture rheology and improve its ,...

Pore Structure of Cement Pastes Mixed with Inorganic Salts ,

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The influence of salts on concrete durability,pore structure of cement pastes with inorganic salts,including CaCl2,NaCl,Na2SO4,NaNO2,Ca NO3 2 and Ca NO2 2,was studied through mercury intrusion porosimetry MIP ,and hydration degree of each paste was also testedThe results show that porosity of the paste with inorganic salt cured for 3 d or 28 d was related ,...

Influence of Type of Cement and Curing on Carbonation ,

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INFLUENCE OF TYPE OF CEMENT AND CURING ON CARBONATION PROGRESS AND PORE STRUCTURE OF HYDRATED CEMENT PASTES ThA BIER UniversitAt Karlsruhe, Institut fur Massivbau und Baustofftechnologie, Abteilung Baustofftechnologie, Kaiserstr 12, D-7500 Karlsruhe, FRG...

Effect of Inorganic Salts on Pore Structure and Frost ,

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As high-early strength agent, anti-freeze agent or corrosion inhibitor, inorganic salts are widely used in concrete structure Especially in some regions with cold climate, inorganic salts added into concrete can increase the early strength of concrete or make concrete ice-free before hardeding, which accelerates construction progress...

Leaching performance of concrete based on studies of ,

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Concrete consists of aggregates and cement paste Leaching can be regarded as an acid attack on the cement paste The cement paste is formed and in equilibrium with a pore solution with a pH of between 13 and 14 Leaching is a process where the pore solution of concrete equilibrates with the surrounding water pH around 6Œ8 This will result in...

Drying and carbonation shrinkage of cement paste ,

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06-02-2017 0183 32 In this work, shrinkage performance of ordinary portland cement OPC paste containing various alkali salts was characterized at two drying conditions, namely nitrogen gas and air The results show that incorporation of alkalis dramatically increases shrinkage magnitude, but reduces shrinkage kinetics of OPC, regardless of source and type of alkalis eg Na or ,...

Effect of Density and Porosity on the Durability of Flyash ,

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pores and air voids influences concrete permeability to a large extent Concrete density is inversely proportional to its porosity The entry of aggressive agents into the pore structure is responsible for various durability problems in concrete structur Therefore, a durable concrete should have low permeability...

Effect of Inorganic Salts on Pore Structure of Cement Paste

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Inorganic salts are important admixtures usually used in cold weather concrete As research basic of influence of salts on concrete durability, effects of inorganic salts on pore structure of ....

Modelling of Capillary Pore Structure Evolution in ,

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The pore structure plays a crucial role in durability performance of cement-based materials However, the pore structure in cement pastes is highly dependent on the initial packing of cement particles and cement hydration process, which seems to be related to the shapes of cement particl This paper proposed a numerical method to investigate the effect of ,...