Evaluation of physicochemical properties and environmental impact of environmentally amicable Portland cement/metakaolin bricks exposed to humid or CO2 curing condition

被引：17

作者：

Bae, Jin-Ho ^{[1
]}

Kim, Seonhyeok ^{[1
]}

Amr, Issam T. ^{[2
]}

Seo, Joonho ^{[1
]}

Jang, Daeik ^{[1
]}

Bamagain, Rami ^{[2
]}

Fadhel, Bandar A. ^{[2
]}

Abu-Aisheh, Emad ^{[3
]}

Lee, H. K. ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol KAIST, Dept Civil & Environm Engn, 291 Daehak Ro, Daejeon 34141, South Korea

[2] Res & Dev Ctr Saudi Aramco Dhahran, Carbon Management Div, Dhahran 31311, Saudi Arabia

[3] Consulting Engn Dept, Civil & Struct Engn Div, Saudi Aramco Dhahran, Dhahran 31311, Saudi Arabia

来源：

JOURNAL OF BUILDING ENGINEERING | 2022年 / 47卷

关键词：

Metakaolin; Pressed brick; Early CO2 curing; Carbon footprint; FLY-ASH; CEMENT PASTE; CARBONATION; METAKAOLIN; CONCRETE; PERFORMANCE; STRENGTH; POROSITY; MORTAR;

D O I：

10.1016/j.jobe.2021.103831

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The present study investigated evaluation of physicochemical properties and environmental impact of environmentally amicable Portland cement/metakaolin bricks exposed to humid or CO2 curing condition. Portland cement was replaced with metakaolin at various dosages (0, 10, 20, 30, and 40 wt%) and the brick samples were subjected to different curing regimes (e.g., air, humidity, and CO2 & nbsp;curing). Analytical assessments of the compressive strength and water capillary absorption as well as pH measurements, X-ray diffractometry, and thermogravimetry were performed. Moreover, a carbon footprint based on CO(2 & nbsp;)uptake results was evaluated to calculate the environmental impact reduction by the CO(2)curing process. The test results indicated that the CO2 & nbsp;uptake of the CO2-cured paste samples was enhanced upon the incorporation of metakaolin. A carbon footprint assessment of the CO2-cured samples revealed that the final CO2 emission of the bricks and the corresponding environmental impact can both be reduced as the metakaolin dosage is increased.

引用

页数：15

共 60 条

[1] Production of eco-friendly bricks from copper mine tailings through geopolymerization [J].

Ahmari, Saeed ;

Zhang, Lianyang .

CONSTRUCTION AND BUILDING MATERIALS, 2012, 29 :323-331

[2] Effect of accelerated curing regimes on high volume Fly ash mixtures in precast manufacturing plants [J].

Alghazali, Hayder H. ;

Aljazaeri, Zena R. ;

Myers, John J. .

CEMENT AND CONCRETE RESEARCH, 2020, 131

[3]

[Anonymous], 2021, ASTM International, C150/C150M-21, DOI [DOI 10.1520/C0150_C0150M-21, 10.1520/C0150_C0150M-21]

[4]

[Anonymous], 2020, ASTM C67-20, P1, DOI [10.1520/00067, DOI 10.1520/00067]

[5] Cement substitution by a combination of metakaolin and limestone [J].

Antoni, M. ;

Rossen, J. ;

Martirena, F. ;

Scrivener, K. .

CEMENT AND CONCRETE RESEARCH, 2012, 42 (12) :1579-1589

[6] Challenges against CO2 abatement strategies in cement industry: A review [J].

Benhelal, Emad ;

Shamsaei, Ezzatollah ;

Rashid, Muhammad Imran .

JOURNAL OF ENVIRONMENTAL SCIENCES, 2021, 104 :84-101

[7] A novel design for green and economical cement manufacturing [J].

Benhelal, Emad ;

Zahedi, Gholamreza ;

Hashim, Haslenda .

JOURNAL OF CLEANER PRODUCTION, 2012, 22 (01) :60-66

[8] Accelerated carbonation testing of alkali-activated slag/metakaolin blended concretes: effect of exposure conditions [J].

Bernal, Susan A. ;

Provis, John L. ;

Mejia de Gutierrez, Ruby ;

van Deventer, Jannie S. J. .

MATERIALS AND STRUCTURES, 2015, 48 (03) :653-669

[9] Impact of metakaolin characteristics on the rheological properties of mortar in the fresh state [J].

Cassagnabere, F. ;

Diederich, P. ;

Mouret, M. ;

Escadeillas, G. ;

Lachemi, M. .

CEMENT & CONCRETE COMPOSITES, 2013, 37 :95-107

[10] Carbonation curing of cement mortars incorporating carbonated fly ash for performance improvement and CO2 sequestration [J].

Chen, Tiefeng ;

Bai, Mengjie ;

Gao, Xiaojian .

JOURNAL OF CO2 UTILIZATION, 2021, 51

← 1 2 3 4 5 6 →