The hydration of cement regenerated from Completely

The hydration of cement regenerated from Completely ...

Jun 16, 2014  Completely Recyclable Concrete (CRC) was designed to be used as the only ingredient for cement production. This CRC was subsequently crushed and ground, and heated to 1450 °C to form Portland clinker. By milling the clinker with calcium sulfate, cement was regenerated. In this paper the hydration of this regenerated cement was studied.

get price

The hydration of cement regenerated from Completely ...

This paper presents a study of the hydration reactions of a cement regenerated from Completely Recyclable Concrete by thermogravimetric analysis and X-ray powder diffraction/Rietveld analysis. The experimental results for the hydration reactions of the clinker phases in the regenerated cement were compared to a hydration model for OPC. A good agreement between the experimental and modeling ...

get price

The regeneration of cement out of Completely Recyclable ...

Jan 01, 2013  To improve the reactivity of the regenerated clinker, and thus cement, it is important to optimize the alite content, but also a higher fineness should be aimed for. In further research, the hydration behaviour of the regenerated cements should be studied more in detail, considering also the influence of the type and the amount of calcium sulphate.

get price

A hydration study by XRD/Rietveld analysis of cement ...

Jan 01, 2018  De Schepper, Mieke, et al. “A Hydration Study by XRD/Rietveld Analysis of Cement Regenerated from Completely Recyclable Concrete.” NTCC2014 : International Conference on Non-Traditional Cement and Concrete, edited by Vlastimil Bilek and Zbynek Kersner, Novpress, 2014.

get price

The Assessment of Clinker and Cement Regenerated from ...

the clinker and its components was provided. The hydration process is on the other hand evaluated by recording the hydration heat of a cement paste in isothermal conditions and monitoring the setting with the ultrasonic through-transmission method. Keywords: Completely Recyclable Concrete, Cradle-to-Cradle, clinker regeneration, cement regeneration

get price

A hydration study by XRD/Rietveld analysis of cement ...

Jan 01, 2018  De Schepper, Mieke, et al. “A Hydration Study by XRD/Rietveld Analysis of Cement Regenerated from Completely Recyclable Concrete.” NTCC2014 : International Conference on Non-Traditional Cement and Concrete, edited by Vlastimil Bilek and Zbynek Kersner, Novpress, 2014.

get price

The Assessment of Clinker and Cement Regenerated from ...

the clinker and its components was provided. The hydration process is on the other hand evaluated by recording the hydration heat of a cement paste in isothermal conditions and monitoring the setting with the ultrasonic through-transmission method. Keywords: Completely Recyclable Concrete, Cradle-to-Cradle, clinker regeneration, cement regeneration

get price

The regeneration of cement out of Completely Recyclable ...

Jan 01, 2013  The Completely Recyclable Concrete used for the preparation of a cement raw meal was first tested for its compressive strength at the age of 28 days (see Table 4).The concrete was then crushed in a jaw crusher and ground in a laboratory mill until a powder with a Blaine Specific Surface Area (SSA) of minimum 450 m 2 /kg was obtained. Afterwards the resulting powders were mixed with

get price

AMOUNT OF WATER REQUIRED FOR COMPLETE HYDRATION OF ...

There is a misconception that it takes only the amount of water in a 0.2-water/cement (w/c) paste to hydrate all of its cement. However, for a given volume of cement to hydrate completely, there must be an amount of original mixing-water-filled space equal to 1.2 times the solid volume of the cement. This is because the hydration product has ...

get price

Evaluation on the Strength Recovery Rate of Concrete Using ...

Schepper, M. D., et al, (2014), “The Hydration of Cement Regenerated from Completely Recyclable Concrete” Construction and Building Materials, 60, 33-41. [ 15 ] Geraldo, R. H., et al, “Study of Alkali-Activated Mortar used as Conventional Repair in Reinforced Concrete” Construction and Building Materials, 165, 914-919.

get price

Concrete: Scientific Principles

Although we have treated the hydration of each cement compound independently, this is not completely accurate. The rate of hydration of a compound may be affected by varying the concentration of another. In general, the rates of hydration during the first few days ranked from fastest to slowest are: tricalcium aluminate > tricalcium silicate ...

get price

Evaluation on the Strength Recovery Rate of Concrete Using ...

Mar 26, 2021  Schepper, M. D., et al, (2014), “The Hydration of Cement Regenerated from Completely Recyclable Concrete” Construction and Building Materials, 60, 33-41. [15] Geraldo, R. H., et al, “Study of Alkali-Activated Mortar used as Conventional Repair in Reinforced Concrete” Construction and Building Materials, 165, 914-919.

get price

Hydration resistance and mechanism of regenerated

the better hydration resistance of regenerated samples. 3.2 Phases characterization of regenerated MgO– CaO brick samples before and after hot water experiment XRD patterns of regenerated samples before and after hot water experiment are shown in Fig. 2. It shows that the main phases of regenerated samples were both MgO, f-CaO, Ca 3SiO 5 (C

get price

A hydration study by xrd rietveld analysis of cement ...

Apr 11, 2015  Title: A hydration study by xrd rietveld analysis of cement regenerated from completely recyclable concrete, Author: eSAT Journals, Name: A hydration study by xrd rietveld analysis of cement ...

get price

CIVL 1101 - Part 4 - Hydration of Portland Cement

CIVL 1101 - Part 4 - Hydration of Portland Cement. Part 4. Hydration of Portland Cement. Chemistry of Hydration - It is assumed that each compound hydrates independently of others in Portland cement. This is not completely true because interaction between hydrating compounds will affect the mix. Calcium Silicates - The hydration reaction of the ...

get price

Aqueous Solubility Diagrams for Cementitious Waste ...

The hydration of cement regenerated from Completely Recyclable Concrete. Construction and Building Materials 2014, 60 , ... Gwenn Le Saoût, Barbara Lothenbach, Akihiro Hori, Takayuki Higuchi, Frank Winnefeld. Hydration of Portland cement with additions of calcium sulfoaluminates. Cement and Concrete Research 2013, 43 , ...

get price

Hydration mechanism and strength of opc and blended opc ...

Sep 03, 2016  The main objective of this research work is to know the cement hydration mechanism, its strength with different ratio of fly ash and metakaolin. ... Isabel Van Driessche, Nele De Belie; The hydration of cement regenerated from Completely Recyclable Concrete Construction and Building materials, 60 , 2014 , 33-41 [3] J.S. Damtoft, J. Lukasik, D ...

get price

DeepDyve - Unlimited Access to Peer-Reviewed Journals

DeepDyve is the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

get price

Nele De Belie onAcademic

Highlights • A hydration study on cement regenerated from Completely Recyclable Concrete. • Experimental results on recycled cement are compared with a cement hydration model. • Reaction kinetics are very similar for recycled and traditional cement. • Hydration product assemblages are very similar for recycled and traditional cement.

get price

Aqueous Solubility Diagrams for Cementitious Waste ...

The hydration of cement regenerated from Completely Recyclable Concrete. Construction and Building Materials 2014, 60 , ... Gwenn Le Saoût, Barbara Lothenbach, Akihiro Hori, Takayuki Higuchi, Frank Winnefeld. Hydration of Portland cement with additions of calcium sulfoaluminates. Cement and Concrete Research 2013, 43 , ...

get price

[PDF] Introducing a New Cement Hydration and ...

Cement hydration is a highly complex process. While hydration models should never completely remove experimental analysis, they are an aid to better understand cement hydration and microstructure development by providing a method to analyse a large number of pastes with different cementitious make-ups in a relatively short time.

get price

Hydration resistance and mechanism of regenerated

the better hydration resistance of regenerated samples. 3.2 Phases characterization of regenerated MgO– CaO brick samples before and after hot water experiment XRD patterns of regenerated samples before and after hot water experiment are shown in Fig. 2. It shows that the main phases of regenerated samples were both MgO, f-CaO, Ca 3SiO 5 (C

get price

The hydration, pore structure and strength of cement-based ...

Abstract A zero-waste process to treat recycled concrete aggregates (RCAs) was carried out through immersing them in acetic acid solutions with concentrations of 0.1, 0.2 and 0.3 mol/L. The waste soaking solutions collected after the immersion process were used as mixing water for preparation of cement paste and mortar samples. After mixing and curing, setting time, fluidity, heat evolution ...

get price

Resistance Properties to Chloride Ingress of Standard ...

Feb 24, 2020  The hydration of cement regenerated from completely recyclable concrete. Construction and Building Materials, 60, 33–41. Article Google Scholar

get price

Evaluation on the Strength Recovery Rate of Concrete Using ...

Mar 26, 2021  Schepper, M. D., et al, (2014), “The Hydration of Cement Regenerated from Completely Recyclable Concrete” Construction and Building Materials, 60, 33-41. [15] Geraldo, R. H., et al, “Study of Alkali-Activated Mortar used as Conventional Repair in Reinforced Concrete” Construction and Building Materials, 165, 914-919.

get price

Strength and Micro-Mechanism Analysis of Cement-Emulsified ...

Dec 27, 2019  The interconnection of cement hydration products completely wraps asphalt and mineral powder, which enhances the overall stability of cement-asphalt mix. The structure of cement emulsified asphalt mortar comes from block into powder after washing the asphalt. ... Cement-emulsified asphalt regenerated mixture also has the process of adhesion ...

get price

Hydration monitoring of cement-based materials with ...

Mar 12, 2008  Two test setups, the electrical resistivity and ultrasonic techniques, were used to monitor the hydration process of cement-based materials. In the electrical resistivity method, a non-contacting device was used. In the ultrasonic method, a wave was transmitted and measured by the embedded piezoelectric ultrasonic transducers, which had good coupling with the surrounding materials.

get price

De invloed van de maalfijnheid van het grondstoffenmengsel ...

The hydration of the cement was investigated by using isothermal calorimetry, XRD and TGA. The hydration reactions were also analyzed using fraction of the particles bigger than the mesh size of the sieve, the model of Parrot and Killoh and modelling in GEMS. Keywords: completely recyclable concrete, fineness, regenerated

get price

Cement Mortar: Its Proportion, Preparation, and Uses!

Jul 03, 2019  Cement gains strength with hydration. So, it is necessary to see that the mortar remains wet until hydration occurs. After placing the mortar/concrete, the process of ensuring sufficient moisture for hydration is called curing. Curing is ensured by spraying water. Generally, curing begins 6–24 hours after using mortar.

get price

STUDY OF RUBBER AGGREGATES IN CONCRETE AN

When the cement particles are coarser, hydration starts on the surface of the particles. So the coarser particles may not be completely hydrated. This causes low strength and low durability. For a rapid development of strength a high fineness is necessary. 2.1.5 Strength

get price

Mineralogical evolution of cement pastes at early ages ...

Dec 20, 2017  Ordinary thermogravimetric analysis (TG) and high-resolution TG tests were carried out on three different Portland cement pastes to study the phases present during the first day of hydration. Tests were run at 1, 6, 12 and 24 h of hydration, in order to determine the phases at these ages. High-resolution TG tests were used to separate decompositions presented in the 100–200 °C interval.

get price

FINAL PROGRAMME OF 5th NTCC CONFERENCE - vutbr

a hydration study by xrd/rietveld analysis of cement regenerated from completely recyclable concrete 15:00 coffee break chairperson: h. s. abdelgader, libya 15:30 d. barbir, p. dabi Ć, a. lisica, croatia assessment of the leachability and mechanical stability of electroplating waste and waste zeolite binding with portland cement 15:50

get price

Hydration Mechanism of a Calcium Phosphate Cement Modified ...

Calcium phosphate cements composed of β-tricalcium phosphate (β-TCP) and phosphoric acid were modified by addition of 5, 10, 12.5, 15 and 20 wt% phytic acid (IP6) related to the β-TCP content and compared to a reference containing 0.5 M citric acid monohydrate solution as setting regulator. The hydr

get price