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calorimetric studies of special cements akademiai

Calorimetric studies of special cements SpringerLink

The kinetics and even the mechanism of cement reaction with water can be successfully investigated by use of microcalorimetry. In this study this method was applied to follow the hydration of the new family of portland cements containing C 12 A 7 * and C 11 A 7 CaF 2 addition as well as special cement with C 3 A replacement by calcium sulphoaluminate. It has been found that C 11 A 7 CaF 2 ...

Cited by: 4

Materials Free Full-Text Calorimetric Studies of ...

In the hydration process of inorganic cements, the analysis of calorimetric measurements is one of the possible ways to better understand hydration processes and to keep these processes under control. This study contains data from the study of thermokinetic processes in alkali-activated blast-furnace slag cements compared to ordinary Portland cement (OPC).

Materials Free Full-Text Calorimetric Studies of ...

2021-10-7  No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided

Calorimetric studies of cementitious materials —

1997-8-1  Calorimetric studies of cementitious materials — chromium interaction Calorimetric studies of cementitious materials — chromium interaction Nocuń-Wczelik, W. 1997-08-01 00:00:00 Cementitious systems based on portland cement are used for immobilization of toxic and hazardous wastes. The addition of waste material may impact the hydration reaction in cement matrix and consequently the ...

Calorimetric Studies of Hydration of Cementitious ...

This paper presents results of thermochemical and thermokinetic studies of the hydration of portland cement, alkaline cements with mineral additives and slag alkaline binder. The influence of the modulus of basicity of the binders on the thermochemical and thermokinetic

Cited by: 3

Calorimetry in the studies of cement hydration SpringerLink

2009-6-19  Calorimetry was applied to an investigation of the early hydration of Portland cement (PC)–calcium aluminate cement (CAC) pastes. The heat evolution measurements were related to the strength tests on small cylindrical samples and standard mortar bars. Different heat-evolution profiles were observed, depending on the calcium aluminate cement/Portland cement ratio. The significant

Cited by: 33

Calorimetry and other methods in the studies of expansive ...

2012-4-3  The expansive cements binders are usually produced by mixing of different Portland cements with an expansive additive composed of calcium sulfoaluminate

Cited by: 13

Calorimetry in the studies of cement hydration

Calorimetry results show that the first and second exothermic peak of C3S with 1 mass% NC is ~29 and ~5% higher than that of control sample and the second peak appears 32 min in advance. Besides ...

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(PDF) Calorimetry and other methods in the studies of ...

In this study, the calorimeter was applied to follow the hydration of special cement mixtures exhibiting expansion or shrinkage compensation. The shrinkage-less and expansive binders were produced ...

Calorimetry in the studies of by-pass cement kiln dust as ...

2019-11-2  The studies focused on the kinetics of early hydration in the high-calcium aluminate cement (CAC 70)—by-pass cement kiln dusts (BPCKD)—mixtures. For this purpose, the mixtures of cement with this additive or with some potential constituents of dusts were produced. The microcalorimeter was applied to follow the kinetics of hydration. The investigations with the aim of finding the ...

Cited by: 2

Calorimetry of Cement-Based Materials NIST

2 天前  Chemical and Physical Tests of the Cements, Journal of the American Concrete Institute, Vol. 19 (8), 745-795, 1948. Verbeck, G.J., and Foster, C.W., Long-Time Study of Cement Performance in Concrete with Special Reference to Heats of Hydration, PCA Bulletin 32, 1949. 1950-1959

(PDF) Calorimetry and other methods in the studies of ...

In this study, the calorimeter was applied to follow the hydration of special cement mixtures exhibiting expansion or shrinkage compensation. The shrinkage-less and expansive binders were produced ...

Calorimetric studies of cementitious materials —

1997-8-1  Calorimetric studies of cementitious materials — chromium interaction Calorimetric studies of cementitious materials — chromium interaction Nocuń-Wczelik, W. 1997-08-01 00:00:00 Cementitious systems based on portland cement are used for immobilization of toxic and hazardous wastes. The addition of waste material may impact the hydration reaction in cement matrix and consequently the ...

Calorimetry in the studies of cement hydration

Calorimetry results show that the first and second exothermic peak of C3S with 1 mass% NC is ~29 and ~5% higher than that of control sample and the second peak appears 32 min in advance. Besides ...

Use of calorimetry and other methods in the studies of ...

2013-1-1  The calorimetric method was used as a main tool in the studies of the effect of superplasticizing and set retarding admixtures on cement hydration. The experiments were carried out using two types of cements (neat Portland cement CEM I 42.5R and blended Portland cement type CEM II/B-M (S-V) 42.5N), at varying w/c ratio 0.5 and 0.3 respectively.

Calorimetric studies of refractory corundum, Journal of ...

2003-11-1  Calorimetry has been used in the investigations of calcium aluminate materials produced as a binder for aluminate-corundum composites of high refractoriness. The kinetics and of hydration process was thus characterized and the optimum compositions of initial binders and cement-corundum refractory filler blends could be selected for further tests.

Calorimetric study of magnesium potassium phosphate ...

In this study, reaction mechanisms of MKP cements with a high magnesium-to-phosphate (Mg/PO 4) molar ratio of 8 were investigated at two different water-to-solid (w/s) ratios of 0.5 and 5.

(PDF) Calorimetric and thermogravimetric study on the ...

Calorimetric and thermogravimetric study on the influence of calcium sulfate on the hydration of ye’elimite May 2012 Journal of Thermal Analysis and Calorimetry 101(3):949-957

Calorimetric investigations of the influence of waste ...

Calorimetric studies of Portland cement [1,2] and calcium aluminate cement [3, 4] pastes show that the FCC catalyst remarkably influences the hydration of various cements. It has been found that ...

[PDF]

Special Issue for National Conference On Recent

2014-1-12  Special Issue for National Conference On Recent Advances in Technology and Management for Integrated Growth 2013 (RATMIG 2013) Organized By: GNI Nagpur, India Calorimetric Studies on Heat Evolution and Temperature Rise due to Hydration of Cementitious Materials in Concrete using Semi-Adiabatic Calorimeter.

Use of calorimetry and other methods in the studies of ...

2013-1-1  The calorimetric method was used as a main tool in the studies of the effect of superplasticizing and set retarding admixtures on cement hydration. The experiments were carried out using two types of cements (neat Portland cement CEM I 42.5R and blended Portland cement type CEM II/B-M (S-V) 42.5N), at varying w/c ratio 0.5 and 0.3 respectively.

[PDF]

Special Issue for National Conference On Recent

2014-1-12  Special Issue for National Conference On Recent Advances in Technology and Management for Integrated Growth 2013 (RATMIG 2013) Organized By: GNI Nagpur, India Calorimetric Studies on Heat Evolution and Temperature Rise due to Hydration of Cementitious Materials in Concrete using Semi-Adiabatic Calorimeter.

Calorimetric investigations of the influence of waste ...

Calorimetric studies of Portland cement [1,2] and calcium aluminate cement [3, 4] pastes show that the FCC catalyst remarkably influences the hydration of various cements. It has been found that ...

(PDF) Calorimetric and thermogravimetric study on the ...

Calorimetric and thermogravimetric study on the influence of calcium sulfate on the hydration of ye’elimite May 2012 Journal of Thermal Analysis and Calorimetry 101(3):949-957

Cement Calorimetry Bibliography Database

2017-6-12  Chemical and Physical Tests of the Cements, Journal of the American Concrete Institute, Vol. 19 (8), pp. 745-795. Verbeck, G.J., and Foster, C.W., 1949, Long-Time Study of Cement Performance in Concrete with Special Reference to Heats of Hydration, PCA Bulletin 32. 1950-1959

Calorimetric study of magnesium potassium phosphate ...

In this study, reaction mechanisms of MKP cements with a high magnesium-to-phosphate (Mg/PO 4) molar ratio of 8 were investigated at two different water-to-solid (w/s) ratios of 0.5 and 5.

Rheological and calorimetric behaviour of cements

2013-3-1  The aim of the present study was to investigate the effect of the partial replacement (10 or 20 wt.%) of ceramic sanitary ware (SW) and construction and demolition waste (CDW) on the rheological properties and hydration kinetics of new blended cements. Analysis of covariance (ANCOVA) was also conducted to study the impact of the factors and co ...

(PDF) Study of the pozzolanic activity and hydration ...

The determination of the pozzolanic activity of The results of the calorimetric studies are the mineral additives was carried out by comparing presented in Tables 3 and 4. They showed that the quantity of calcium hydroxide dissolved in during the first six hours of hydration (Table 3) the water in contact with hydrated cement with that addition ...

Calcium Aluminate Cements Proceedings of a Symposium ...

2014-4-21  The special properties of calcium aluminate cements make them of value in the construction, mining and refractory industries. This book brings together new

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