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@article{5f6fbf00a54b4f189af6a2269745b24e,
title = "Limestone and Calcined Clay-Based Sustainable Cementitious Materials for 3D Concrete Printing: A Fundamental Study of Extrudability and Early-Age Strength Development",
abstract = "The goal of this study is to investigate the effects of different grades of calcined clay on the extrudability and early-age strength development under ambient conditions. Four mix designs were proposed. Three of them contained high, medium, and low grades of calcined clay, respectively, and one was the reference without calcined clay. In terms of extrudability, an extrusion test method based on the ram extruder was introduced to observe the quality of extruded material filaments, and to determine the extrusion pressure of tested materials at different ages. For evaluating the very early-age strength development, the penetration resistance test, the green strength test, and the ultrasonic pulse velocity test were applied. Furthermore, the mechanical properties of the developed mix designs were determined by the compressive strength test at 1, 7 and 28 days. Finally, the main finding of this study was that increasing the metakaolin content in calcined clay could significantly increase the extrusion pressures and green strength, shorten the initial setting time and enhance the compressive strength at 1, 7, and 28 days.",
keywords = "3D concrete printing, Early-age strength, Extrudability, Limestone and calcined clay, Sustainable",
author = "Yu Chen and Zhenming Li and {Chaves Figueiredo}, Stefan and Oguzhan Copuroglu and Fred Veer and E. Schlangen",
note = "Part of the Special Issue Low Binder Concrete and Mortars",
year = "2019",
doi = "10.3390/app9091809",
language = "English",
volume = "9",
journal = "Applied Sciences",
issn = "2076-3417",
publisher = "MDPI",
number = "9",

}

RIS

TY - JOUR

T1 - Limestone and Calcined Clay-Based Sustainable Cementitious Materials for 3D Concrete Printing

T2 - A Fundamental Study of Extrudability and Early-Age Strength Development

AU - Chen, Yu

AU - Li, Zhenming

AU - Chaves Figueiredo, Stefan

AU - Copuroglu, Oguzhan

AU - Veer, Fred

AU - Schlangen, E.

N1 - Part of the Special Issue Low Binder Concrete and Mortars

PY - 2019

Y1 - 2019

N2 - The goal of this study is to investigate the effects of different grades of calcined clay on the extrudability and early-age strength development under ambient conditions. Four mix designs were proposed. Three of them contained high, medium, and low grades of calcined clay, respectively, and one was the reference without calcined clay. In terms of extrudability, an extrusion test method based on the ram extruder was introduced to observe the quality of extruded material filaments, and to determine the extrusion pressure of tested materials at different ages. For evaluating the very early-age strength development, the penetration resistance test, the green strength test, and the ultrasonic pulse velocity test were applied. Furthermore, the mechanical properties of the developed mix designs were determined by the compressive strength test at 1, 7 and 28 days. Finally, the main finding of this study was that increasing the metakaolin content in calcined clay could significantly increase the extrusion pressures and green strength, shorten the initial setting time and enhance the compressive strength at 1, 7, and 28 days.

AB - The goal of this study is to investigate the effects of different grades of calcined clay on the extrudability and early-age strength development under ambient conditions. Four mix designs were proposed. Three of them contained high, medium, and low grades of calcined clay, respectively, and one was the reference without calcined clay. In terms of extrudability, an extrusion test method based on the ram extruder was introduced to observe the quality of extruded material filaments, and to determine the extrusion pressure of tested materials at different ages. For evaluating the very early-age strength development, the penetration resistance test, the green strength test, and the ultrasonic pulse velocity test were applied. Furthermore, the mechanical properties of the developed mix designs were determined by the compressive strength test at 1, 7 and 28 days. Finally, the main finding of this study was that increasing the metakaolin content in calcined clay could significantly increase the extrusion pressures and green strength, shorten the initial setting time and enhance the compressive strength at 1, 7, and 28 days.

KW - 3D concrete printing

KW - Early-age strength

KW - Extrudability

KW - Limestone and calcined clay

KW - Sustainable

UR - http://www.scopus.com/inward/record.url?scp=85065719520&partnerID=8YFLogxK

U2 - 10.3390/app9091809

DO - 10.3390/app9091809

M3 - Article

VL - 9

JO - Applied Sciences

JF - Applied Sciences

SN - 2076-3417

IS - 9

M1 - 1809

ER -

ID: 53672449