EFFECT OF CACO3 CONTENT ON THE DEGREE OF CO2 CURING OF CONCRETE

被引：0

作者：

Tu, Zhenjun ^{[1
]}

Shi, Caijun ^{[1
,2
]}

He, Pingping ^{[1
]}

Cao, Zhang ^{[1
]}

机构：

[1] Hunan Univ, Coll Civil Engn, Changsha 410082, Hunan, Peoples R China

[2] Hunan Univ, Coll Civil Engn, Key Lab Bldg Safety & Engergy Efficiency, Minist Educ, Changsha 410082, Hunan, Peoples R China

来源：

ADVANCES IN CHEMICALLY-ACTIVATED MATERIALS (CAM'2014) | 2014年 / 92卷

关键词：

Calcium carbonate; Microstructure; CO2; curing; remaining water-to-binder ratio;

D O I：

暂无

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

This study investigated the effect of calcium carbonate powders on CO2 curing of concrete. The results indicated that the addition of calcium carbonate not only promoted the extent of CO2 curing, but also reduced the pre-curing time of concrete. The increase of calcium carbonate content increased the remaining water-to-cement ratio of the concrete. The highest extent of CO2 curing obtained when the specimens reached the optimum remaining water-to-cement ratio. The early CO2 curing product is mainly calcite, there was a certain amount of aragonite, mixed with silica gel.

引用

页码：281 / 289

页数：9

共 15 条

[1]

Berger R.L., 1972, Cement and Concrete Research, V2, P647, DOI DOI 10.1016/0008-8846(72)90002-6

[2]

Caijun S., 2009, Concrete International, P39

[3]

Huntzinger D.N., 2006, Carbon dioxide sequestration in cement kiln dust through mineral carbonation

[4] Physico-Chemical Processes Limiting CO2 Uptake in Concrete during Accelerated Carbonation Curing [J].

Kashef-Haghighi, Sormeh ;

Ghoshal, Subhasis .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2013, 52 (16) :5529-5537

[5] Mineralisation of CaCO3 in the presence of polycarboxylate comb polymers [J].

Keller, Helena ;

Plank, Johann .

CEMENT AND CONCRETE RESEARCH, 2013, 54 :1-11

[6]

Klemm W.A., 1972, Cem. Concr. Res, V2, P567, DOI [10.1016/0008-8846(72)90111-1, DOI 10.1016/0008-8846(72)90111-1]

[7] Influence of moisture content on CO2 uptake in lightweight concrete subject to early carbonation [J].

Morshed, Abu Zakir ;

Shao, Yixin .

JOURNAL OF SUSTAINABLE CEMENT-BASED MATERIALS, 2013, 2 (02) :144-160

[8] A REACTION-ENGINEERING APPROACH TO THE PROBLEM OF CONCRETE CARBONATION [J].

PAPADAKIS, VG ;

VAYENAS, CG ;

FARDIS, MN .

AICHE JOURNAL, 1989, 35 (10) :1639-1650

[9]

Shao YX, 2006, PROCEEDINGS OF THE 6TH INTERNATIONAL SYMPOSIUM ON CEMENT & CONCRETE AND CANMET/ACI INTERNATIONAL SYMPOSIUM ON CONCRETE TECHNOLOGY FOR SUSTAINABLE DEVELOPMENT, VOLS 1 AND 2, P823

[10] CO2 sequestration using calcium-silicate concrete [J].

Shao, Yixin ;

Mirza, M. Saeed ;

Wu, Xiaorong .

CANADIAN JOURNAL OF CIVIL ENGINEERING, 2006, 33 (06) :776-784

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