UHPFRCs feature high performance in terms of compressive strength (> 150 MPa – 21755 psi) and tensile strength (> 5 MPa – 725 psi). Compared to normal concrete, their matrix is designed with lower water/cement ratios (  0.25), higher cement content and smaller aggregate size. Since their crack pattern is typically characterized by small cracks, the use of short fibers to reinforce the matrix is more appropriate. In general, UHPFRC production requires plenty of non-renewable natural raw materials with polluting emissions mainly related to the high dosage of cement. In this framework, the presented work proposes the usage of porcelain stoneware waste powders from rectification, as part of fine-grained components. The paper presents preliminary results of an experimental campaign aimed at optimizing the flexural and compressive performances of concrete admixtures with porcelain stoneware waste materials, using design of experiments. All the admixtures contained the same quantity of PVA fibers. The performances of the mixes were evaluated by means of four point bending and compressive tests, performed after 28 and 60 days. Introducing stoneware waste powders it was possible to obtain high strength materials with a reduced cement content.

Clementina Del Prete, A.V. (2021). High Performance Fibre Reinforced Concrete: optimization of the concrete matrix with porcelain stoneware powder. Arezki Tagnit-Hamou.

High Performance Fibre Reinforced Concrete: optimization of the concrete matrix with porcelain stoneware powder

Clementina Del Prete;Anna Vinciguerra;Nicola Buratti;Claudio Mazzotti
2021

Abstract

UHPFRCs feature high performance in terms of compressive strength (> 150 MPa – 21755 psi) and tensile strength (> 5 MPa – 725 psi). Compared to normal concrete, their matrix is designed with lower water/cement ratios (  0.25), higher cement content and smaller aggregate size. Since their crack pattern is typically characterized by small cracks, the use of short fibers to reinforce the matrix is more appropriate. In general, UHPFRC production requires plenty of non-renewable natural raw materials with polluting emissions mainly related to the high dosage of cement. In this framework, the presented work proposes the usage of porcelain stoneware waste powders from rectification, as part of fine-grained components. The paper presents preliminary results of an experimental campaign aimed at optimizing the flexural and compressive performances of concrete admixtures with porcelain stoneware waste materials, using design of experiments. All the admixtures contained the same quantity of PVA fibers. The performances of the mixes were evaluated by means of four point bending and compressive tests, performed after 28 and 60 days. Introducing stoneware waste powders it was possible to obtain high strength materials with a reduced cement content.
2021
11th ACI/RILEM International Conference on Cementitious Materials and Alternative Binders for Sustainable Concrete
1
13
Clementina Del Prete, A.V. (2021). High Performance Fibre Reinforced Concrete: optimization of the concrete matrix with porcelain stoneware powder. Arezki Tagnit-Hamou.
Clementina Del Prete, Anna Vinciguerra, Nicola Buratti, Claudio Mazzotti
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/869433
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact