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title

The effect of three types of Superplasticizer on tricalcium aluminate hydration

Credit to Download: 1 | Page Numbers 11 | Abstract Views: 88
Year: 2019
COI code: CEMENT05_026
Paper Language: English

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Authors The effect of three types of Superplasticizer on tricalcium aluminate hydration

Davoud Amini - Expert of Shahrekord Cement Laboratory
Golrokh Shahmorzadzadeh - Head of Shahrekord Cement Laboratory
  Ebrahim Rahimi - Employee of Shahrekord Cement Laboratory
Forough Ansari - Employee of Shahrekord Cement Laboratory

Abstract:

Various types of Superplasticizer have been widely used over the past few decades to produce very high strength and durable concrete. These chemicals interfere with the different physical and chemical processes that occur in primary cement paste. This paper presents the results of investigating the effect of superplasticizers on hydration of pure tricalcium aluminate in the presence of gypsum. Suspension hydration has been investigated using conductivity, isothermal calorimetry and total liquid phase organic carbon analysis. The time required for the formation of ettringite without superplasticizer in the presence of three different types of superplasticizer is specified: Polyphenyl sulfonates (PNSs), polycarboxylate-polyoxide (PCP) and polydethylene diphosphonate. Since polyethylene diphosphonate does not appear to modify the hydration of tricalcium aluminate in the presence of gypsum, PCP and even more PNS slow down the formation of ettringitis. This effect appears to be largely due to increased C3A dissolution and may be linked to PCP. Or PNS observed from the initial hydration of C3A. In addition, the presence of PCP superplasticizer reduces the size of the ettringite crystals.

Keywords:

Hydration, Ultrafiltration, Tricalcium aluminate

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COI code: CEMENT05_026

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If you want to refer to this article in your research, you can easily use the following in the resources and references section:
Amini, Davoud; Golrokh Shahmorzadzadeh; Ebrahim Rahimi & Forough Ansari, 2019, The effect of three types of Superplasticizer on tricalcium aluminate hydration, Fifth National Conference on Cement Industry and the Future Horizon, تهران - مركز همايش هاي بين المللي رازي, دانشگاه حكيم سبزواري, https://www.civilica.com/Paper-CEMENT05-CEMENT05_026.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Amini, Davoud; Golrokh Shahmorzadzadeh; Ebrahim Rahimi & Forough Ansari, 2019)
Second and more: (Amini; Shahmorzadzadeh; Rahimi & Ansari, 2019)
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