Strength Prediction of Hybrid Slag Mortars Containing Chopped Carbon Fibers Through Pore Features

Küçük Resim Yok

Tarih

2022

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Springer Int Publ Ag

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

Fiber inclusion has gained great attention in recent years due to the possibility of enhanced mechanical performance in cementitious materials. Fiber distribution, orientation, bundle areas, etc. are proved effective factors on determining the strength properties of fiber-incorporated mortars. In this work, the pore structure-based mechanical behavior of hybrid slag (HS) mortars containing chopped carbon fiber (CCF) was investigated with the aim of building a bridge between the pore structure features and strength properties including all the strength-affecting factors mentioned above. The mechanism of strength gain with the depending changes on pore structure was discussed both at early and later ages of hydration. Results show that a higher amount of 50-100 nm pore proportion resulted in a desirable matrix without fiber bundle areas and a strong correlation between the 50 and 100 nm pore content, and the 28-day compressive strength was detected with R-2 of 0.98. Moreover, measurement of critical pore contents plays a remarkable role for the prediction of both flexural and compressive strengths of mortars after 7 and 28 days of curing. Based on the relations determined, the measurement of the strength- governing pore formation seems as a key factor in order to get a clear understanding of the total influence of the individual strength-affecting factors experienced in fiber inclusive cementitious materials.

Açıklama

Anahtar Kelimeler

Pore structure, Critical pores, Slag, Micro-CT, Strength prediction

Kaynak

Iranian Journal Of Science And Technology-Transactions Of Civil Engineering

WoS Q Değeri

Q3

Scopus Q Değeri

Q3

Cilt

46

Sayı

6

Künye