In-situ strength estimation of polypropylene fibre reinforced recycled aggregate concrete using Schmidt rebound hammer and point load test

Kazemi, Mostafa; Hajforoush, Mohammad; Khakpour Talebi, Pouyan; Daneshfar, Mohammad; Shokrgozar, Ali; Jahandari, Soheil; Saberian, Mohammad; Li, Jie

doi:10.1080/21650373.2020.1734983

Article (Scientific journals)

In-situ strength estimation of polypropylene fibre reinforced recycled aggregate concrete using Schmidt rebound hammer and point load test

Kazemi, Mostafa; Hajforoush, Mohammad; Khakpour Talebi, Pouyan et al.

2020 • In Journal of Sustainable Cement-Based Materials

Peer reviewed

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https://hdl.handle.net/2268/250288

DOI
10.1080/21650373.2020.1734983

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Keywords :

In-situ strength estimation; Recycled coarse aggregate; Polypropylene fibres; Point load test; Schmidt rebound hammer

Abstract :

[en] An appropriate amount of polypropylene fibre (PF) content is generally able to compensate for the low compressive strength of the recycled aggregate concrete. This mechanical strength is required to reliably estimate at the building site using partially and non-destructive testing methods. Therefore, in the present study, the compressive strength of concrete with PF at 0.1% by volume and different replacement levels of recycled coarse aggregate (RCA) was assessed using point load test (PLT) and Schmidt rebound hammer. According to the results, the sensitivity of the core specimens to the concentrated point load and the short size of PF in the failure zone of the PLT caused to appear a difference among the enhancement trends of PLI values by increasing the age. In addition, a two-variable equation between the rebound number and point load index (PLI) reliably predicted either strength of coarse natural concrete or recycled aggregate concrete or PRAC.

Disciplines :

Civil engineering

Author, co-author :

Kazemi, Mostafa ; Université de Liège - ULiège > Département ArGEnCo > Département ArGEnCo

Hajforoush, Mohammad

Khakpour Talebi, Pouyan

Daneshfar, Mohammad

Shokrgozar, Ali

Jahandari, Soheil

Saberian, Mohammad

Li, Jie

Language :

English

Title :

In-situ strength estimation of polypropylene fibre reinforced recycled aggregate concrete using Schmidt rebound hammer and point load test

Publication date :

2020

Journal title :

Journal of Sustainable Cement-Based Materials

ISSN :

2165-0373

eISSN :

2165-0381

Publisher :

Taylor & Francis, United Kingdom

Peer reviewed :

Peer reviewed

Available on ORBi :

since 25 August 2020

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