Influence of nano TiO2 on strength and durability properties of geopolymer concrete

Sastry, K.V.S.Gopala Krishna; Sahitya, P.; Ravitheja, A.

doi:10.1016/j.matpr.2020.03.139

Cited by 59 publications

(19 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From the research work carried by Gopala Krishna Sastry, 24 it is observed that the nanotitanium oxides acted as large nucleation sites to actuate the polymerization speed and the nanopore filling effects offers the densification of matrix which resulted in the enhanced durability characteristics up to the optimum percentage of 3% by weight of binders. The minimum value of electron passed measured during the RCPT test was 2016 Coulombs which is 3.71 times higher than the chloride ion permeability obtained in this present paper.…”

Section: Resultsmentioning

confidence: 99%

Corrosion assessment of ferrocement element with nanogeopolymer for marine application

Rajendran¹

2021

Structural Concrete

View full text Add to dashboard Cite

Corrosion is the major reason which limits the practical application of ferrocement structures in the marine environment. To protect the thin and strong wire mesh reinforcement, preventive methods are required to be employed. One of such methods implemented in this paper is novel application of geopolymer mortar on the surface of the wire mesh. The microstructural pores present in the highly durable fly ash based geopolymer mortar are further enhanced by using nanomodified fly ash particles to achieve the impermeable surfaces. Effect of alkaline solution concentration on the chloride ion penetration and corrosion has been investigated by using the different concentration of sodium hydroxide solution from 8 to 14 M. From the results, it is noted that for the geopolymer specimens, the chloride ions penetration values of 542.70 Coulombs is observed at 28 days which comes under the category of very low as per ASTM C1202‐10. The chloride ion penetration observed in geopolymer specimen is 17% lesser than ferrocement panel with conventional cement mortar. The time taken for cracking is delayed in the case of ferrocement panel with geopolymer mortar of 10 M concentrated sodium hydroxide solution by thrice the times of specimen with conventional cement mortar. This indicates that the incorporation of nanogeopolymer in ferrocement element not only increased the strength but also its serviceability against cracking and corrosion resulted in the extensive application of ferrocement construction in marine environment.

show abstract

Section: Resultsmentioning

confidence: 99%

Corrosion assessment of ferrocement element with nanogeopolymer for marine application

Rajendran¹

2021

Structural Concrete

View full text Add to dashboard Cite

show abstract

“…Furthermore, from the standpoint of rational ˑnatural ˑresource ˑmanagement, ˑmine ˑtailings ˑshould ˑbe ˑseen ˑas ˑa ˑmineral ˑsource ˑthat ˑhas been extracted from the ˑearth's ˑsubsurface, ˑtransported, ˑand ˑunderutilized. ˑThe ˑtailings ˑcan ˑcomprise ˑtrace ˑamounts ˑof ˑtarget ˑmaterial ˑas ˑwell ˑas ˑpreviously ˑunclaimed ˑelements ˑthat ˑcan ˑbe ˑrestored ˑvia ˑmore ˑeffective mining ˑprocedures ˑ [5][6][7][8][9][10], ˑwhich ˑis ˑone ˑreason ˑfor ˑthis ˑviewpoint. ˑThe ˑchemical ˑcomposition ˑof ˑmine ˑtailings, ˑon ˑthe ˑother ˑhand, is primarily composed ˑof ˑsilicon, ˑaluminum, ˑand ˑcalcium ˑoxides, ˑwith ˑa ˑpercentage ˑranging ˑfrom ˑ60 ˑto ˑ90% ˑ [11].…”

Section: Introductionmentioning

confidence: 99%

Mine tailings-based geopolymers: Mechanical and physical properties

Ahmed¹

2022

Preprint

View full text Add to dashboard Cite

<p> </p> <p>The mining sector generates a substantial quantity of stone waste and tailings, which constitutes an environmental risk. The most prevalent method for disposing of this industrial waste is dumping, which contributes to soil deterioration and water contamination while acquiring precious land. It can be recycled using a number of processes, such as the promising geopolymerization technique, which transforms waste into value. This study reviews current developments in the manufacturing of mine tailings-based geopolymer composites from industrial waste as a possible sustainable building material. This paper also gives in-depth studies on the characteristics and behaviors of mine tailings composites used in geopolymer manufacturing, including physical and mechanical properties. This review also identifies knowledge gaps that must be filled in order to advance mine tailings composites for geopolymers.</p>

show abstract

“…Furthermore, from the standpoint of rational ˑ natural ˑ resource ˑ management, ˑ mine ˑ tailings ˑ should ˑ be ˑ seen ˑ as ˑ a ˑ mineral ˑ source ˑ that ˑ has been extracted from the ˑ earth's ˑ subsurface, ˑ transported, ˑ and ˑ underutilized. ˑ The ˑ tailings ˑ can ˑ comprise ˑ trace ˑ amounts ˑ of ˑ target ˑ material ˑ as ˑ well ˑ as ˑ previously ˑ unclaimed ˑ elements ˑ that ˑ can ˑ be ˑ restored ˑ via ˑ more ˑ effective mining ˑ procedures ˑ [5][6][7][8][9][10], ˑ which ˑ is ˑ one ˑ reason ˑ for ˑ this ˑ viewpoint. ˑ The ˑ chemical ˑ composition ˑ of ˑ mine ˑ tailings, ˑ on ˑ the ˑ other ˑ hand, is primarily composed ˑ of ˑ silicon, ˑ aluminum, ˑ and ˑ calcium ˑ oxides, ˑ with ˑ a ˑ percentage ˑ ranging ˑ from ˑ 60 ˑ to ˑ 90% ˑ [1-4, 11, 12].…”

Section: Introductionmentioning

confidence: 99%

Mine Tailings-Based Geopolymers: Durability, Microstructure, Thermal and Leaching Properties

He¹

2022

Preprint

View full text Add to dashboard Cite

The mining sector generates a substantial quantity of stone waste and tailings, which constitutes an environmental risk. The most prevalent method for disposing of this industrial waste is dumping, which contributes to soil deterioration and water contamination while acquiring precious land. It can be recycled using a number of processes, such as the promising geopolymerization technique, which transforms waste into value. This study reviews current developments in the manufacturing of mine tailings-based geopolymer composites from industrial waste as a possible sustainable building material. This paper also gives in-depth studies on the characteristics and behaviors of mine tailings composites used in geopolymer manufacturing, including durability, microstructure, thermal and leaching properties. This review also identifies knowledge gaps that must be filled in order to advance mine tailings composites for geopolymers.

show abstract

Influence of nano TiO2 on strength and durability properties of geopolymer concrete

Cited by 59 publications

References 8 publications

Corrosion assessment of ferrocement element with nanogeopolymer for marine application

Corrosion assessment of ferrocement element with nanogeopolymer for marine application

Mine tailings-based geopolymers: Mechanical and physical properties

Mine Tailings-Based Geopolymers: Durability, Microstructure, Thermal and Leaching Properties

Contact Info

Product

Resources

About