Eco-efficient alkali-activated cement based on red clay brick wastes suitable for the manufacturing of building materials

被引：103

作者：

Andres Robayo-Salazar, Rafael ^{[1
]}

Mercedes Mejia-Arcila, Johanna ^{[1
]}

Mejia de Gutierrez, Ruby ^{[1
]}

机构：

[1] Univ Valle, Sch Mat Engn, Composites Mat Grp CENM, Calle 13 100-00,Edif 349,2 Piso, Cali, Colombia

来源：

JOURNAL OF CLEANER PRODUCTION | 2017年 / 166卷

关键词：

Red clay brick waste; Alkali-activated materials; Hybrid cements; Eco-efficient construction and building materials; Industrial waste recycling; Life cycle assessment; BLAST-FURNACE SLAG; RICE HUSK ASH; A-S-H; FLY-ASH; PORTLAND-CEMENT; GEOPOLYMER; HYDRATION; CONCRETE; BINDERS; OPC;

D O I：

10.1016/j.jclepro.2017.07.243

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The objective of this study was to obtain hybrid-type binders at room temperature (25 degrees C) from the alkaline activation of a red clay brick waste and the addition of a reduced amount (<= 30%) of Portland cement. Different types of activators were used, including solids (Na2SO4, Na2CO3, NaOH) and liquids(Na(2)SiO(3)xH(2)O). The results highlight the possibility of obtaining an eco-efficient, hybrid cement with compressive strengths of up to 102 MPa at 28 days and reductions of up to 73% in the global warming potential (expressed in kg. CO2. eq/MPa) associated with a Portland cement paste. Based on the optimum hybrid cement, a mortar was developed and used as a base material for the production of block and paver construction elements that comply with construction industry standards. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：242 / 252

页数：11

共 50 条

[1] Development of greener alkali-activated cement: utilisation of sodium carbonate for activating slag and fly ash mixtures
Abdalqader, Ahmed F.
Jin, Fei
Al-Tabbaa, Abir
[J]. JOURNAL OF CLEANER PRODUCTION, 2016, 113 : 66 - 75
[2] Production of geopolymeric binder from blended waste concrete powder and fly ash
Ahmari, Saeed
Ren, Xin
Toufigh, Vahab
Zhang, Lianyang
[J]. CONSTRUCTION AND BUILDING MATERIALS, 2012, 35 : 718 - 729
[3] Allahverdi A, 2009, INT J CIV ENG, V7, P154
[4] Production of building elements based on alkali-activated red clay brick waste
Andres Robayo-Salazar, Rafael
Mejia de Gutierrez, Ruby
Jimena Mulford-Carvajal, Alexandra
[J]. REVISTA FACULTAD DE INGENIERIA, UNIVERSIDAD PEDAGOGICA Y TECNOLOGICA DE COLOMBIA, 2016, 25 (43): : 21 - 30
[5] [Anonymous], 1993, ADV CEM RES
[6] Climate and Clean Air Coalition (CCAC), 2015, MIT BC OTH POLL BRIC
[7] Alkali activation of fly ash:: Effect of the SiO2/Na2O ratio Part I:: FTIR study
Criado, M.
Fernandez-Jimenez, A.
Palomo, A.
[J]. MICROPOROUS AND MESOPOROUS MATERIALS, 2007, 106 (1-3) : 180 - 191
[8] Davidovits J., 1994, Proceedings of the first international conference on alkaline cements and concretes, P131, DOI DOI 10.1016/J.COLSURFA.2006.05.044
[9] Very High Volume Fly Ash Cements. Early Age Hydration Study Using Na2SO4 as an Activator
Donatello, Shane
Fernandez-Jimenez, Ana
Palomo, Angel
[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2013, 96 (03) : 900 - 906
[10] Understanding the relationship between geopolymer composition, microstructure and mechanical properties
Duxson, P
Provis, JL
Lukey, GC
Mallicoat, SW
Kriven, WM
van Deventer, JSJ
[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2005, 269 (1-3) : 47 - 58

← 1 2 3 4 5 →