Reuse of waste ferrochrome slag in the production of mortar with improved thermal and mechanical performance

Khalifa Al-Jabri, H. Shoukry, Ibrahim S. Khalil, Sobhi Nasir, Hossam Hassan

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This study focuses on the reuse of waste ferrochrome (FeCr) slag as a partial replacement for sand in the production of cement mortar with improved thermal and mechanical properties. Sand was replaced by FeCr slag in different percentages ranging from 0 up to 20% (by weight). The flowability test was performed to evaluate the mortar's behavior in a fresh state. Tests for the compressive strength, flexural strength, drying shrinkage, thermal conductivity, and specific heat of the blended mortars have been conducted according to ASTM standards at 3, 7, and 28 days of curing. X-ray diffraction (XRD) was utilized to examine the phase composition. The scanning electron microscope (SEM) was used for inspecting the microstructure changes of the hardened samples. The results revealed considerable improvements in the compressive and flexural strengths; improvement ratios of about 33 and 39% were attained respectively at 20% FeCr slag replacement after 28 days of curing. The drying shrinkage generally decreased with increasing replacement of sand by FeCr slag. FeCr slag acts to increase both the thermal conductivity and specific heat effectively. FeCr slag caused remarkable modifications in the microstructure of the blended mortars.

Original languageEnglish
Article number04018152
JournalJournal of Materials in Civil Engineering
Volume30
Issue number8
DOIs
Publication statusPublished - Aug 1 2018

Fingerprint

Mortar
Slags
Sand
Bending strength
Compressive strength
Specific heat
Curing
Thermal conductivity
Drying
Microstructure
Phase composition
Hot Temperature
Cements
Electron microscopes
Thermodynamic properties
Scanning
X ray diffraction
Mechanical properties

Keywords

  • Compressive strength
  • Drying shrinkage
  • Ferrochrome (FeCr) slag
  • Flexural strength
  • Microstructure
  • Mortar
  • Thermal conductivity

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)
  • Mechanics of Materials

Cite this

Reuse of waste ferrochrome slag in the production of mortar with improved thermal and mechanical performance. / Al-Jabri, Khalifa; Shoukry, H.; Khalil, Ibrahim S.; Nasir, Sobhi; Hassan, Hossam.

In: Journal of Materials in Civil Engineering, Vol. 30, No. 8, 04018152, 01.08.2018.

Research output: Contribution to journalArticle

@article{d0b30dc1526242d68bc7903138824ac4,
title = "Reuse of waste ferrochrome slag in the production of mortar with improved thermal and mechanical performance",
abstract = "This study focuses on the reuse of waste ferrochrome (FeCr) slag as a partial replacement for sand in the production of cement mortar with improved thermal and mechanical properties. Sand was replaced by FeCr slag in different percentages ranging from 0 up to 20{\%} (by weight). The flowability test was performed to evaluate the mortar's behavior in a fresh state. Tests for the compressive strength, flexural strength, drying shrinkage, thermal conductivity, and specific heat of the blended mortars have been conducted according to ASTM standards at 3, 7, and 28 days of curing. X-ray diffraction (XRD) was utilized to examine the phase composition. The scanning electron microscope (SEM) was used for inspecting the microstructure changes of the hardened samples. The results revealed considerable improvements in the compressive and flexural strengths; improvement ratios of about 33 and 39{\%} were attained respectively at 20{\%} FeCr slag replacement after 28 days of curing. The drying shrinkage generally decreased with increasing replacement of sand by FeCr slag. FeCr slag acts to increase both the thermal conductivity and specific heat effectively. FeCr slag caused remarkable modifications in the microstructure of the blended mortars.",
keywords = "Compressive strength, Drying shrinkage, Ferrochrome (FeCr) slag, Flexural strength, Microstructure, Mortar, Thermal conductivity",
author = "Khalifa Al-Jabri and H. Shoukry and Khalil, {Ibrahim S.} and Sobhi Nasir and Hossam Hassan",
year = "2018",
month = "8",
day = "1",
doi = "10.1061/(ASCE)MT.1943-5533.0002345",
language = "English",
volume = "30",
journal = "Journal of Materials in Civil Engineering",
issn = "0899-1561",
publisher = "American Society of Civil Engineers (ASCE)",
number = "8",

}

TY - JOUR

T1 - Reuse of waste ferrochrome slag in the production of mortar with improved thermal and mechanical performance

AU - Al-Jabri, Khalifa

AU - Shoukry, H.

AU - Khalil, Ibrahim S.

AU - Nasir, Sobhi

AU - Hassan, Hossam

PY - 2018/8/1

Y1 - 2018/8/1

N2 - This study focuses on the reuse of waste ferrochrome (FeCr) slag as a partial replacement for sand in the production of cement mortar with improved thermal and mechanical properties. Sand was replaced by FeCr slag in different percentages ranging from 0 up to 20% (by weight). The flowability test was performed to evaluate the mortar's behavior in a fresh state. Tests for the compressive strength, flexural strength, drying shrinkage, thermal conductivity, and specific heat of the blended mortars have been conducted according to ASTM standards at 3, 7, and 28 days of curing. X-ray diffraction (XRD) was utilized to examine the phase composition. The scanning electron microscope (SEM) was used for inspecting the microstructure changes of the hardened samples. The results revealed considerable improvements in the compressive and flexural strengths; improvement ratios of about 33 and 39% were attained respectively at 20% FeCr slag replacement after 28 days of curing. The drying shrinkage generally decreased with increasing replacement of sand by FeCr slag. FeCr slag acts to increase both the thermal conductivity and specific heat effectively. FeCr slag caused remarkable modifications in the microstructure of the blended mortars.

AB - This study focuses on the reuse of waste ferrochrome (FeCr) slag as a partial replacement for sand in the production of cement mortar with improved thermal and mechanical properties. Sand was replaced by FeCr slag in different percentages ranging from 0 up to 20% (by weight). The flowability test was performed to evaluate the mortar's behavior in a fresh state. Tests for the compressive strength, flexural strength, drying shrinkage, thermal conductivity, and specific heat of the blended mortars have been conducted according to ASTM standards at 3, 7, and 28 days of curing. X-ray diffraction (XRD) was utilized to examine the phase composition. The scanning electron microscope (SEM) was used for inspecting the microstructure changes of the hardened samples. The results revealed considerable improvements in the compressive and flexural strengths; improvement ratios of about 33 and 39% were attained respectively at 20% FeCr slag replacement after 28 days of curing. The drying shrinkage generally decreased with increasing replacement of sand by FeCr slag. FeCr slag acts to increase both the thermal conductivity and specific heat effectively. FeCr slag caused remarkable modifications in the microstructure of the blended mortars.

KW - Compressive strength

KW - Drying shrinkage

KW - Ferrochrome (FeCr) slag

KW - Flexural strength

KW - Microstructure

KW - Mortar

KW - Thermal conductivity

UR - http://www.scopus.com/inward/record.url?scp=85047265348&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85047265348&partnerID=8YFLogxK

U2 - 10.1061/(ASCE)MT.1943-5533.0002345

DO - 10.1061/(ASCE)MT.1943-5533.0002345

M3 - Article

VL - 30

JO - Journal of Materials in Civil Engineering

JF - Journal of Materials in Civil Engineering

SN - 0899-1561

IS - 8

M1 - 04018152

ER -