Evaluation of the Effects of Surface Treatment Methods on the Properties of Coral Aggregate and Concrete

Coral concrete has low cost and convenient materials, making it an excellent raw material for processing. However, its lower strength limits the application of coral concrete. Surface modification is expected to increase the properties of porous coral concrete. In this study, single and compound mod...

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Autores principales:	Jinming Liu, Boyu Ju, Wei Xie, Ting Zhou, Haiying Xiao, Shanliang Dong, Wenshu Yang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	coral coral concrete surface treatment granulated blast furnace slag sodium silicate Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/223693aa8efc424ea1c806e0d5919dc0
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id	oai:doaj.org-article:223693aa8efc424ea1c806e0d5919dc0
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spelling	oai:doaj.org-article:223693aa8efc424ea1c806e0d5919dc02021-11-25T18:13:32ZEvaluation of the Effects of Surface Treatment Methods on the Properties of Coral Aggregate and Concrete10.3390/ma142267841996-1944https://doaj.org/article/223693aa8efc424ea1c806e0d5919dc02021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6784https://doaj.org/toc/1996-1944Coral concrete has low cost and convenient materials, making it an excellent raw material for processing. However, its lower strength limits the application of coral concrete. Surface modification is expected to increase the properties of porous coral concrete. In this study, single and compound modification treatments were applied to the surface of a coral aggregate to improve its properties for promoting the mechanical performance of coral concrete. The results showed that the micro-aggregate effect and pozzolanic activity of granulated blast furnace slag (GBFS) and the permeability and polycondensation of sodium silicate (SS) could be mutually promoted. The GBFS and SS could effectively fill the pores of the coral aggregate, enhancing the properties of the aggregate, such as density and load-bearing capacity, and reducing the water absorption and crushing index by more than 50%. GBFS and SS could intensify and accelerate the hydration of cement, and generate a large number of hard hydration products at the interfacial transition zone (ITZ), which could strengthen the bonding between the aggregate and mortar, improving the strength of the ITZ. The compressive strength of the coral concrete was significantly increased.Jinming LiuBoyu JuWei XieTing ZhouHaiying XiaoShanliang DongWenshu YangMDPI AGarticlecoralcoral concretesurface treatmentgranulated blast furnace slagsodium silicateTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6784, p 6784 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	coral coral concrete surface treatment granulated blast furnace slag sodium silicate Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	coral coral concrete surface treatment granulated blast furnace slag sodium silicate Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Jinming Liu Boyu Ju Wei Xie Ting Zhou Haiying Xiao Shanliang Dong Wenshu Yang Evaluation of the Effects of Surface Treatment Methods on the Properties of Coral Aggregate and Concrete
description	Coral concrete has low cost and convenient materials, making it an excellent raw material for processing. However, its lower strength limits the application of coral concrete. Surface modification is expected to increase the properties of porous coral concrete. In this study, single and compound modification treatments were applied to the surface of a coral aggregate to improve its properties for promoting the mechanical performance of coral concrete. The results showed that the micro-aggregate effect and pozzolanic activity of granulated blast furnace slag (GBFS) and the permeability and polycondensation of sodium silicate (SS) could be mutually promoted. The GBFS and SS could effectively fill the pores of the coral aggregate, enhancing the properties of the aggregate, such as density and load-bearing capacity, and reducing the water absorption and crushing index by more than 50%. GBFS and SS could intensify and accelerate the hydration of cement, and generate a large number of hard hydration products at the interfacial transition zone (ITZ), which could strengthen the bonding between the aggregate and mortar, improving the strength of the ITZ. The compressive strength of the coral concrete was significantly increased.
format	article
author	Jinming Liu Boyu Ju Wei Xie Ting Zhou Haiying Xiao Shanliang Dong Wenshu Yang
author_facet	Jinming Liu Boyu Ju Wei Xie Ting Zhou Haiying Xiao Shanliang Dong Wenshu Yang
author_sort	Jinming Liu
title	Evaluation of the Effects of Surface Treatment Methods on the Properties of Coral Aggregate and Concrete
title_short	Evaluation of the Effects of Surface Treatment Methods on the Properties of Coral Aggregate and Concrete
title_full	Evaluation of the Effects of Surface Treatment Methods on the Properties of Coral Aggregate and Concrete
title_fullStr	Evaluation of the Effects of Surface Treatment Methods on the Properties of Coral Aggregate and Concrete
title_full_unstemmed	Evaluation of the Effects of Surface Treatment Methods on the Properties of Coral Aggregate and Concrete
title_sort	evaluation of the effects of surface treatment methods on the properties of coral aggregate and concrete
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/223693aa8efc424ea1c806e0d5919dc0
work_keys_str_mv	AT jinmingliu evaluationoftheeffectsofsurfacetreatmentmethodsonthepropertiesofcoralaggregateandconcrete AT boyuju evaluationoftheeffectsofsurfacetreatmentmethodsonthepropertiesofcoralaggregateandconcrete AT weixie evaluationoftheeffectsofsurfacetreatmentmethodsonthepropertiesofcoralaggregateandconcrete AT tingzhou evaluationoftheeffectsofsurfacetreatmentmethodsonthepropertiesofcoralaggregateandconcrete AT haiyingxiao evaluationoftheeffectsofsurfacetreatmentmethodsonthepropertiesofcoralaggregateandconcrete AT shanliangdong evaluationoftheeffectsofsurfacetreatmentmethodsonthepropertiesofcoralaggregateandconcrete AT wenshuyang evaluationoftheeffectsofsurfacetreatmentmethodsonthepropertiesofcoralaggregateandconcrete
_version_	1718411424454148096

Evaluation of the Effects of Surface Treatment Methods on the Properties of Coral Aggregate and Concrete

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