Preparation of water-permeable bricks derived from fly ash by autoclaving

Jiahao Li; Xilong Li; Sha Liang; Yuanshang Zhang; Qiang Ye; Li Zhang; Chaoqun Pan; Ruibin Lv; Qingyi Li; Keke Xiao; Yilei Yan; Ye Chen; Jingping Hu; Huijie Hou; Jiakuan Yang

doi:10.1016/j.conbuildmat.2020.121556

Preparation of water-permeable bricks derived from fly ash by autoclaving

Jiahao Li, Xilong Li, Sha Liang^*, Yuanshang Zhang, Qiang Ye, Li Zhang, Chaoqun Pan, Ruibin Lv, Qingyi Li, Keke Xiao, Yilei Yan, Ye Chen, Jingping Hu, Huijie Hou, Jiakuan Yang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

In this study, water-permeable bricks were prepared from fly ash (FA) by autoclaving. Granulated FA prepared by geopolymerization was used as aggregate and mixed with fine FA to achieve a high content of FA (>50 wt%) in water-permeable bricks. Effects of sodium silicate dose, water/fine FA mass ratio, forming pressure and autoclaving time on the performance of water-permeable bricks were investigated. Under optimal conditions, the compressive strength and permeability coefficient of prepared bricks could reach 35.5 MPa, and 1.044 × 10^-4 m/s, respectively. The mineral compositions, micro-morphology, and pore distribution of the permeable bricks were investigated. The pore structure of permeable bricks was investigated by using mercury intrusion porosimetry and micro computed tomography. The connected pores in bricks contribute to the higher water permeability coefficient.

Original language	English
Article number	121556
Journal	Construction and Building Materials
Volume	271
DOIs	https://doi.org/10.1016/j.conbuildmat.2020.121556
State	Published - 15 Feb 2021
Externally published	Yes

Keywords

Autoclaving
Fly ash
Geopolymerization
Micro-CT
Permeable brick
Porosity

Access to Document

10.1016/j.conbuildmat.2020.121556

Cite this

@article{1e6a140b3c7c45b38e71ad913ef77260,

title = "Preparation of water-permeable bricks derived from fly ash by autoclaving",

abstract = "In this study, water-permeable bricks were prepared from fly ash (FA) by autoclaving. Granulated FA prepared by geopolymerization was used as aggregate and mixed with fine FA to achieve a high content of FA (>50 wt%) in water-permeable bricks. Effects of sodium silicate dose, water/fine FA mass ratio, forming pressure and autoclaving time on the performance of water-permeable bricks were investigated. Under optimal conditions, the compressive strength and permeability coefficient of prepared bricks could reach 35.5 MPa, and 1.044 × 10-4 m/s, respectively. The mineral compositions, micro-morphology, and pore distribution of the permeable bricks were investigated. The pore structure of permeable bricks was investigated by using mercury intrusion porosimetry and micro computed tomography. The connected pores in bricks contribute to the higher water permeability coefficient.",

keywords = "Autoclaving, Fly ash, Geopolymerization, Micro-CT, Permeable brick, Porosity",

author = "Jiahao Li and Xilong Li and Sha Liang and Yuanshang Zhang and Qiang Ye and Li Zhang and Chaoqun Pan and Ruibin Lv and Qingyi Li and Keke Xiao and Yilei Yan and Ye Chen and Jingping Hu and Huijie Hou and Jiakuan Yang",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2021",

month = feb,

day = "15",

doi = "10.1016/j.conbuildmat.2020.121556",

language = "英语",

volume = "271",

journal = "Construction and Building Materials",

issn = "0950-0618",

publisher = "Elsevier Ltd.",

}

TY - JOUR

T1 - Preparation of water-permeable bricks derived from fly ash by autoclaving

AU - Li, Jiahao

AU - Li, Xilong

AU - Liang, Sha

AU - Zhang, Yuanshang

AU - Ye, Qiang

AU - Zhang, Li

AU - Pan, Chaoqun

AU - Lv, Ruibin

AU - Li, Qingyi

AU - Xiao, Keke

AU - Yan, Yilei

AU - Chen, Ye

AU - Hu, Jingping

AU - Hou, Huijie

AU - Yang, Jiakuan

PY - 2021/2/15

Y1 - 2021/2/15

N2 - In this study, water-permeable bricks were prepared from fly ash (FA) by autoclaving. Granulated FA prepared by geopolymerization was used as aggregate and mixed with fine FA to achieve a high content of FA (>50 wt%) in water-permeable bricks. Effects of sodium silicate dose, water/fine FA mass ratio, forming pressure and autoclaving time on the performance of water-permeable bricks were investigated. Under optimal conditions, the compressive strength and permeability coefficient of prepared bricks could reach 35.5 MPa, and 1.044 × 10-4 m/s, respectively. The mineral compositions, micro-morphology, and pore distribution of the permeable bricks were investigated. The pore structure of permeable bricks was investigated by using mercury intrusion porosimetry and micro computed tomography. The connected pores in bricks contribute to the higher water permeability coefficient.

AB - In this study, water-permeable bricks were prepared from fly ash (FA) by autoclaving. Granulated FA prepared by geopolymerization was used as aggregate and mixed with fine FA to achieve a high content of FA (>50 wt%) in water-permeable bricks. Effects of sodium silicate dose, water/fine FA mass ratio, forming pressure and autoclaving time on the performance of water-permeable bricks were investigated. Under optimal conditions, the compressive strength and permeability coefficient of prepared bricks could reach 35.5 MPa, and 1.044 × 10-4 m/s, respectively. The mineral compositions, micro-morphology, and pore distribution of the permeable bricks were investigated. The pore structure of permeable bricks was investigated by using mercury intrusion porosimetry and micro computed tomography. The connected pores in bricks contribute to the higher water permeability coefficient.

KW - Autoclaving

KW - Fly ash

KW - Geopolymerization

KW - Micro-CT

KW - Permeable brick

KW - Porosity

UR - http://www.scopus.com/inward/record.url?scp=85096390844&partnerID=8YFLogxK

U2 - 10.1016/j.conbuildmat.2020.121556

DO - 10.1016/j.conbuildmat.2020.121556

M3 - 文章

AN - SCOPUS:85096390844

SN - 0950-0618

VL - 271

JO - Construction and Building Materials

JF - Construction and Building Materials

M1 - 121556

ER -

Preparation of water-permeable bricks derived from fly ash by autoclaving

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this