Optimization of material characteristics of macro-defect free cement

Ozgur Ekincioglu; M. Hulusi Ozkul; Leslie J. Struble; Silvia Patachia

doi:10.1016/j.cemconcomp.2011.11.003

Optimization of material characteristics of macro-defect free cement

Ozgur Ekincioglu^*
, M. Hulusi Ozkul
, Leslie J. Struble
, Silvia Patachia

^*Bu çalışma için yazışmadan sorumlu yazar

İnşaat Mühendisliği Bölümü

Okan University
Istanbul Technical University
University of Illinois at Urbana-Champaign
Transilvania University of Brasov

Araştırma sonucu: Dergiye katkı › Makale › bilirkişi

48 Atıf (Scopus)

Özet

Macro-defect free (MDF) cement is a high-strength cement-polymer composite produced by mixing cement (commonly calcium aluminate cement) with small amounts of polymer (commonly polyvinyl alcohol acetate) and water, applying high shear, and finally applying relatively low pressure (about 5 MPa) and modest temperature (about 80-100 °C). However, MDF cements lose considerable strength when exposed to water. The objective of this study was to explore the effects of cement and polymer compositions on flexural strength and water sensitivity. Calcium aluminate cements were used with Al ₂O ₃ contents between 42% and 79%. Production of MDF cement was successful with all cements, but the highest strength (268 MPa) was obtained with 70% Al ₂O ₃ cement. Secondly, PVAs were used that differed in their degree of hydrolysis between 73% and 99%. Of these, the one with a moderate degree of hydrolysis produced the highest strength (228 MPa). All mixtures had strength loss on exposure to water, but PVAs with moderate degrees of hydrolysis exhibited the lowest strength losses (50-60%).

Orijinal dil	İngilizce
Sayfa (başlangıç-bitiş)	556-565
Sayfa sayısı	10
Dergi	Cement and Concrete Composites
Hacim	34
Basın numarası	4
DOI'lar	https://doi.org/10.1016/j.cemconcomp.2011.11.003
Yayın durumu	Yayınlandı - Nis 2012

Finansman

The authors thank the Scientific & Technological Research Council of Turkey (TUBITAK) for supporting this study. Chun-Tao Chen performed the thermal analyses at the University of Illinois and FTIR analyses were performed at the Transilvania University of Brasov with the support of CNCSIS-Romania (Project No: IDEI 389/2009). The PVA samples were kindly supplied by Marubeni America Corporation, NY, USA, and Nippon Gohsei Europe GMBH, Duesseldorf, Germany, and the cements were supplied by Lafarge North America, Chesapeake, Virginia, USA.

Finansörler	Finansör numarası
CNCSIS-Romania	IDEI 389/2009

Belgeye Erişim

10.1016/j.cemconcomp.2011.11.003

Diğer Dosyalar ve Linkler

Link to publication in Scopus

Alıntı Yap

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title = "Optimization of material characteristics of macro-defect free cement",

abstract = "Macro-defect free (MDF) cement is a high-strength cement-polymer composite produced by mixing cement (commonly calcium aluminate cement) with small amounts of polymer (commonly polyvinyl alcohol acetate) and water, applying high shear, and finally applying relatively low pressure (about 5 MPa) and modest temperature (about 80-100 °C). However, MDF cements lose considerable strength when exposed to water. The objective of this study was to explore the effects of cement and polymer compositions on flexural strength and water sensitivity. Calcium aluminate cements were used with Al 2O 3 contents between 42\% and 79\%. Production of MDF cement was successful with all cements, but the highest strength (268 MPa) was obtained with 70\% Al 2O 3 cement. Secondly, PVAs were used that differed in their degree of hydrolysis between 73\% and 99\%. Of these, the one with a moderate degree of hydrolysis produced the highest strength (228 MPa). All mixtures had strength loss on exposure to water, but PVAs with moderate degrees of hydrolysis exhibited the lowest strength losses (50-60\%).",

keywords = "Calcium aluminate cement, Hydrolysis degree, MDF cements, MDF composites, PVA, Water sensitivity",

author = "Ozgur Ekincioglu and Ozkul, \{M. Hulusi\} and Struble, \{Leslie J.\} and Silvia Patachia",

year = "2012",

month = apr,

doi = "10.1016/j.cemconcomp.2011.11.003",

language = "English",

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T1 - Optimization of material characteristics of macro-defect free cement

AU - Ekincioglu, Ozgur

AU - Ozkul, M. Hulusi

AU - Struble, Leslie J.

AU - Patachia, Silvia

PY - 2012/4

Y1 - 2012/4

N2 - Macro-defect free (MDF) cement is a high-strength cement-polymer composite produced by mixing cement (commonly calcium aluminate cement) with small amounts of polymer (commonly polyvinyl alcohol acetate) and water, applying high shear, and finally applying relatively low pressure (about 5 MPa) and modest temperature (about 80-100 °C). However, MDF cements lose considerable strength when exposed to water. The objective of this study was to explore the effects of cement and polymer compositions on flexural strength and water sensitivity. Calcium aluminate cements were used with Al 2O 3 contents between 42% and 79%. Production of MDF cement was successful with all cements, but the highest strength (268 MPa) was obtained with 70% Al 2O 3 cement. Secondly, PVAs were used that differed in their degree of hydrolysis between 73% and 99%. Of these, the one with a moderate degree of hydrolysis produced the highest strength (228 MPa). All mixtures had strength loss on exposure to water, but PVAs with moderate degrees of hydrolysis exhibited the lowest strength losses (50-60%).

AB - Macro-defect free (MDF) cement is a high-strength cement-polymer composite produced by mixing cement (commonly calcium aluminate cement) with small amounts of polymer (commonly polyvinyl alcohol acetate) and water, applying high shear, and finally applying relatively low pressure (about 5 MPa) and modest temperature (about 80-100 °C). However, MDF cements lose considerable strength when exposed to water. The objective of this study was to explore the effects of cement and polymer compositions on flexural strength and water sensitivity. Calcium aluminate cements were used with Al 2O 3 contents between 42% and 79%. Production of MDF cement was successful with all cements, but the highest strength (268 MPa) was obtained with 70% Al 2O 3 cement. Secondly, PVAs were used that differed in their degree of hydrolysis between 73% and 99%. Of these, the one with a moderate degree of hydrolysis produced the highest strength (228 MPa). All mixtures had strength loss on exposure to water, but PVAs with moderate degrees of hydrolysis exhibited the lowest strength losses (50-60%).

KW - Calcium aluminate cement

KW - Hydrolysis degree

KW - MDF cements

KW - MDF composites

KW - PVA

KW - Water sensitivity

UR - https://www.scopus.com/pages/publications/84857371352

U2 - 10.1016/j.cemconcomp.2011.11.003

DO - 10.1016/j.cemconcomp.2011.11.003

M3 - Article

AN - SCOPUS:84857371352

SN - 0958-9465

VL - 34

SP - 556

EP - 565

JO - Cement and Concrete Composites

JF - Cement and Concrete Composites

IS - 4

ER -

Optimization of material characteristics of macro-defect free cement

Özet

Finansman

Belgeye Erişim

Diğer Dosyalar ve Linkler

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