Crack healing performance of PVA-coated granules made of cement, CSA, and Na2CO3 in the cement matrix

Yong Soo Lee, Jae Suk Ryou

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Various self-healing methods for concrete, such as the use of supplementary cementitious materials, adhesive agents, mineral admixtures, and bacteria, have been suggested to date, and each of these has merits and demerits. Among these, however, the use of cementitious materials may be appropriate due to their good healing efficiency, low cost, and compatibility with the cement matrix. In this study, granulation and coating methods were applied to a new cementitious composite material. The self-healing property of these materials was controlled by the polyvinyl alcohol (PVA) coating until cracks were created. Water dissolved the PVA coating after entering through the cracks, and reacted with the healing materials to generate healing products. The self-healing performance was evaluated at various elapsed times through the measurement of the crack widths, visual observation, and examination of the microscopic images. Simultaneously, a water permeability test was performed and the dynamic modulus of elasticity was measured to verify the recovery of the cracks. In addition, the healing products that had been formed in the cracks were analyzed via X-ray diffraction (XRD) and scanning electron microscopy (SEM).

Original languageEnglish
Article number555
JournalMaterials
Volume9
Issue number7
DOIs
StatePublished - 2016 Jan 1

Fingerprint

Polyvinyl Alcohol
Polyvinyl alcohols
Cements
Cracks
Coatings
Granulation
Water
Minerals
Adhesives
Bacteria
Elastic moduli
calcium sulfoaluminate
Concretes
Recovery
X ray diffraction
Scanning electron microscopy
Composite materials
Costs

Keywords

  • Cementitious materials
  • Coating
  • Granulation
  • PVA film
  • Self-healing

Cite this

@article{baf9ab1fe5b04652876c1296620c4fc8,
title = "Crack healing performance of PVA-coated granules made of cement, CSA, and Na2CO3 in the cement matrix",
abstract = "Various self-healing methods for concrete, such as the use of supplementary cementitious materials, adhesive agents, mineral admixtures, and bacteria, have been suggested to date, and each of these has merits and demerits. Among these, however, the use of cementitious materials may be appropriate due to their good healing efficiency, low cost, and compatibility with the cement matrix. In this study, granulation and coating methods were applied to a new cementitious composite material. The self-healing property of these materials was controlled by the polyvinyl alcohol (PVA) coating until cracks were created. Water dissolved the PVA coating after entering through the cracks, and reacted with the healing materials to generate healing products. The self-healing performance was evaluated at various elapsed times through the measurement of the crack widths, visual observation, and examination of the microscopic images. Simultaneously, a water permeability test was performed and the dynamic modulus of elasticity was measured to verify the recovery of the cracks. In addition, the healing products that had been formed in the cracks were analyzed via X-ray diffraction (XRD) and scanning electron microscopy (SEM).",
keywords = "Cementitious materials, Coating, Granulation, PVA film, Self-healing",
author = "Lee, {Yong Soo} and Ryou, {Jae Suk}",
year = "2016",
month = "1",
day = "1",
doi = "10.3390/MA9070555",
language = "English",
volume = "9",
journal = "Materials",
issn = "1996-1944",
number = "7",

}

Crack healing performance of PVA-coated granules made of cement, CSA, and Na2CO3 in the cement matrix. / Lee, Yong Soo; Ryou, Jae Suk.

In: Materials, Vol. 9, No. 7, 555, 01.01.2016.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Crack healing performance of PVA-coated granules made of cement, CSA, and Na2CO3 in the cement matrix

AU - Lee, Yong Soo

AU - Ryou, Jae Suk

PY - 2016/1/1

Y1 - 2016/1/1

N2 - Various self-healing methods for concrete, such as the use of supplementary cementitious materials, adhesive agents, mineral admixtures, and bacteria, have been suggested to date, and each of these has merits and demerits. Among these, however, the use of cementitious materials may be appropriate due to their good healing efficiency, low cost, and compatibility with the cement matrix. In this study, granulation and coating methods were applied to a new cementitious composite material. The self-healing property of these materials was controlled by the polyvinyl alcohol (PVA) coating until cracks were created. Water dissolved the PVA coating after entering through the cracks, and reacted with the healing materials to generate healing products. The self-healing performance was evaluated at various elapsed times through the measurement of the crack widths, visual observation, and examination of the microscopic images. Simultaneously, a water permeability test was performed and the dynamic modulus of elasticity was measured to verify the recovery of the cracks. In addition, the healing products that had been formed in the cracks were analyzed via X-ray diffraction (XRD) and scanning electron microscopy (SEM).

AB - Various self-healing methods for concrete, such as the use of supplementary cementitious materials, adhesive agents, mineral admixtures, and bacteria, have been suggested to date, and each of these has merits and demerits. Among these, however, the use of cementitious materials may be appropriate due to their good healing efficiency, low cost, and compatibility with the cement matrix. In this study, granulation and coating methods were applied to a new cementitious composite material. The self-healing property of these materials was controlled by the polyvinyl alcohol (PVA) coating until cracks were created. Water dissolved the PVA coating after entering through the cracks, and reacted with the healing materials to generate healing products. The self-healing performance was evaluated at various elapsed times through the measurement of the crack widths, visual observation, and examination of the microscopic images. Simultaneously, a water permeability test was performed and the dynamic modulus of elasticity was measured to verify the recovery of the cracks. In addition, the healing products that had been formed in the cracks were analyzed via X-ray diffraction (XRD) and scanning electron microscopy (SEM).

KW - Cementitious materials

KW - Coating

KW - Granulation

KW - PVA film

KW - Self-healing

UR - http://www.scopus.com/inward/record.url?scp=85010748401&partnerID=8YFLogxK

U2 - 10.3390/MA9070555

DO - 10.3390/MA9070555

M3 - Article

AN - SCOPUS:85010748401

VL - 9

JO - Materials

JF - Materials

SN - 1996-1944

IS - 7

M1 - 555

ER -