Quality improvement of mixed and ceramic recycled aggregates by biodeposition of calcium carbonate

Julia García-González; Desirée Rodríguez-Robles; Jianyun Wang; Nele De Belie; Julia Mª Morán-del Pozo; M. Ignacio Guerra-Romero; Andrés Juan-Valdés

doi:10.1016/j.conbuildmat.2017.08.039

Quality improvement of mixed and ceramic recycled aggregates by biodeposition of calcium carbonate

Julia García-González
, Desirée Rodríguez-Robles
, Jianyun Wang
, Nele De Belie
, Julia Mª Morán-del Pozo
, M. Ignacio Guerra-Romero
, Andrés Juan-Valdés

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

71 Scopus citations

Abstract

This research focuses on improving the quality of mixed and ceramic recycled aggregates by microbially induced carbonate precipitation (Bacillus sphaericus). The precipitation contributed to a weight increase and unleashed a waterproofing response. The roughness of the ceramic particles created a more uniform layer compared to natural or concrete particles. For the concrete fraction, which had a higher macroporosity, the consolidation effect was more pronounced. High ceramic content aggregates profited from a greater biodeposition, leading to a remaining amount of precipitates after sonication which was still greater than in cementitious materials. Pore-filling effect was detected by SEM, supporting the waterproofing result.

Original language	English
Pages (from-to)	1015-1023
Number of pages	9
Journal	Construction and Building Materials
Volume	154
DOIs	https://doi.org/10.1016/j.conbuildmat.2017.08.039
State	Published - 15 Nov 2017
Externally published	Yes

Keywords

Construction and demolition waste
Microbially induced calcium carbonate
Mixed and ceramic recycled aggregates
Ultrasonic attack
Water absorption

Access to Document

10.1016/j.conbuildmat.2017.08.039

Cite this

@article{2c3e17565a7841aca3a22fabad044f84,

title = "Quality improvement of mixed and ceramic recycled aggregates by biodeposition of calcium carbonate",

abstract = "This research focuses on improving the quality of mixed and ceramic recycled aggregates by microbially induced carbonate precipitation (Bacillus sphaericus). The precipitation contributed to a weight increase and unleashed a waterproofing response. The roughness of the ceramic particles created a more uniform layer compared to natural or concrete particles. For the concrete fraction, which had a higher macroporosity, the consolidation effect was more pronounced. High ceramic content aggregates profited from a greater biodeposition, leading to a remaining amount of precipitates after sonication which was still greater than in cementitious materials. Pore-filling effect was detected by SEM, supporting the waterproofing result.",

keywords = "Construction and demolition waste, Microbially induced calcium carbonate, Mixed and ceramic recycled aggregates, Ultrasonic attack, Water absorption",

author = "Julia Garc{\'i}a-Gonz{\'a}lez and Desir{\'e}e Rodr{\'i}guez-Robles and Jianyun Wang and \{De Belie\}, Nele and \{Mor{\'a}n-del Pozo\}, \{Julia Mª\} and Guerra-Romero, \{M. Ignacio\} and Andr{\'e}s Juan-Vald{\'e}s",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

month = nov,

day = "15",

doi = "10.1016/j.conbuildmat.2017.08.039",

language = "英语",

volume = "154",

pages = "1015--1023",

journal = "Construction and Building Materials",

issn = "0950-0618",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Quality improvement of mixed and ceramic recycled aggregates by biodeposition of calcium carbonate

AU - García-González, Julia

AU - Rodríguez-Robles, Desirée

AU - Wang, Jianyun

AU - De Belie, Nele

AU - Morán-del Pozo, Julia Mª

AU - Guerra-Romero, M. Ignacio

AU - Juan-Valdés, Andrés

PY - 2017/11/15

Y1 - 2017/11/15

N2 - This research focuses on improving the quality of mixed and ceramic recycled aggregates by microbially induced carbonate precipitation (Bacillus sphaericus). The precipitation contributed to a weight increase and unleashed a waterproofing response. The roughness of the ceramic particles created a more uniform layer compared to natural or concrete particles. For the concrete fraction, which had a higher macroporosity, the consolidation effect was more pronounced. High ceramic content aggregates profited from a greater biodeposition, leading to a remaining amount of precipitates after sonication which was still greater than in cementitious materials. Pore-filling effect was detected by SEM, supporting the waterproofing result.

AB - This research focuses on improving the quality of mixed and ceramic recycled aggregates by microbially induced carbonate precipitation (Bacillus sphaericus). The precipitation contributed to a weight increase and unleashed a waterproofing response. The roughness of the ceramic particles created a more uniform layer compared to natural or concrete particles. For the concrete fraction, which had a higher macroporosity, the consolidation effect was more pronounced. High ceramic content aggregates profited from a greater biodeposition, leading to a remaining amount of precipitates after sonication which was still greater than in cementitious materials. Pore-filling effect was detected by SEM, supporting the waterproofing result.

KW - Construction and demolition waste

KW - Microbially induced calcium carbonate

KW - Mixed and ceramic recycled aggregates

KW - Ultrasonic attack

KW - Water absorption

UR - https://www.scopus.com/pages/publications/85029705411

U2 - 10.1016/j.conbuildmat.2017.08.039

DO - 10.1016/j.conbuildmat.2017.08.039

M3 - 文章

AN - SCOPUS:85029705411

SN - 0950-0618

VL - 154

SP - 1015

EP - 1023

JO - Construction and Building Materials

JF - Construction and Building Materials

ER -

Quality improvement of mixed and ceramic recycled aggregates by biodeposition of calcium carbonate

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this