PSI - Issue 23

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Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2019) 000 – 000 Structural Integrity Procedia 00 (2019) 000 – 000

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 23 (2019) 113–118

© 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the scientific committee of the ICMSMF organizers © 201 9 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the scientific committee of the IC MSMF organizers. The research s of or ars shrinkag tested by shrinkage gutter method will be presented in the article. This method allows automatic measurement any volume changes (expansion nd shrinkage) f om the moment th mortar is laid in the gutter. Reclaimed aggregate was ade fro the fresh unused mor ar subjected to gra ulation and accelerated binding. This effect was obtained by the use of c emical admixture package co sisting of two components: a superabso bent nd a setting accelerator. The control mortar and three types of mortars containing reclaimed ggregate (granulate) in variable mount : 15%, 25% nd 50% were tested. The a of the applied granulate was 1 and 14 d ys. Reclaimed a gregate (granulate) was dosed by mass conversion of natural aggr gate into granules. The conducted research allowed es imating the influence of the age and quantity of reclaimed aggregate on th mic o structure f te ted mortars and on shrinkage of the tested c mposites. The s rinkage f mortars containi g 1 day ranulate is larger than mortars c ntaining 14 day granules. The shrinkage of th mortar with 50% content of 1 day gr nulate is greater by about 20% than the mortar with 50% content of 14 day granulate after 40 days of measurements in automatic gutters. © 201 9 The Authors. Published by Elsevier B.V. This is an ope acces article under CC BY-NC-ND lic nse (http://creativecommon org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the scientific committee of the IC MSMF organizers. 9th International Conference on Materials Structure and Micromechanics of Fracture The research of mortars shrinkage made with reclaimed aggregate Małgorzata Lenart a *, Maciej Gruszczyński a a Cracow University of Technology, ul.Warszawska 24, 31- 155 Kraków, Poland The researches of mortars shrinkage tested by shrinkage gutters method will be presented in the article. This method allows automatic measurement any volume changes (expansion and shrinkage) from the moment the mortar is laid in the gutter. Reclaimed aggregate was made from the fresh unused mortar subjected to granulation and accelerated binding. This effect was obtained by the use of chemical admixture package consisting of two components: a superabsorbent and a setting accelerator. The control mortar and three types of mortars containing reclaimed aggregate (granulate) in variable amounts: 15%, 25% and 50% were tested. The age of the applied granulate was 1 and 14 days. Reclaimed aggregate (granulate) was dosed by mass conversion of natural aggregate into granules. The conducted research allowed estimating the influence of the age and quantity of reclaimed aggregate on the micro structure of tested mortars and on shrinkage of the tested composites. The shrinkage of mortars containing 1 day granulate is larger than mortars containing 14 day granules. The shrinkage of the mortar with 50% content of 1 day granulate is greater by about 20% than the mortar with 50% content of 14 day granulate after 40 days of measurements in automatic gutters. 9th International Conference on Materials Structure and Micromechanics of Fracture The research of mortars shrinkage made with reclaimed aggregate Małgorzata Lenart a *, Maciej Gruszczyński a a Cracow University of Technology, ul.Warszawska 24, 31- 155 Kraków, Poland Abstract Abstract

Keywords: reclaimed aggregate; recycled aggregate; mortar; shrinkage test; sustainable development. Keywords: reclaimed aggregate; recycled aggregate; mortar; shrinkage test; sustainable development.

1. Introduction 1. Introduction

The contemporary development of civilization has a significant impact on the surrounding environment. Therefore, environment and human friendly construction includes, among others: saving of natural resources, preventing of soil, air and water pollution, reducing the amount of waste (including post-production waste) and their The contemp rary development of civilization has a significant impact on the surrounding environment. Ther fore, environment and human friendly onstruction i cludes, among others: saving of atural resourc s, preventing of soil, air and water pollution, reducing the amount of waste (including post-production waste) and their

* Corresponding author. Tel.: +48 12 628 23 63; fax: +48 12 628 23 10 E-mail address: mlenart@pk.edu.pl * Correspon ing author. Tel.: +48 12 628 23 63; fax: +48 12 628 23 10 E-mail address: mlenart@pk.edu.pl

2452-3216 © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the scientific committee of the IC MSMF organizers. 2452-3216 © 2019 The Authors. Published by Elsevier B.V. This is an ope acces article under CC BY-NC-ND lic nse (http://creativecommon org/licenses/by-nc-nd/4.0/)

Peer-review under responsibility of the scientific committee of the IC MSMF organizers.

2452-3216 © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the scientific committee of the ICMSMF organizers 10.1016/j.prostr.2020.01.072