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Mortar Properties

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Mortar properties encompass a range of characteristics crucial for construction and masonry work, including workability, water retention, bond strength, durability, compressive strength, volume change, and appearance. Workability refers to mortar's ability to be easily applied and manipulated without sagging or falling off surfaces, which is important for efficient masonry unit placement and alignment. Water retention is essential to prevent the mortar from losing moisture too quickly to...

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Strength tests for cement are not performed directly on neat cement paste due to difficulty in obtaining consistent, reliable specimens. Instead, cement is typically tested in the form of cement-sand mortar.
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Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing

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Testing Mortars for 3D Printing: Correlation with Rheological Behavior.

Ta Minh Phuong Bao¹, Muy Yeakleang¹, Sandra Abdelouhab²

¹Urban and Environmental Engineering, Building Materials, University of Liège, 4000 Liège, Belgium.

Materials (Basel, Switzerland)

|October 26, 2024

Summary

This study links traditional flow table tests with the rheological properties of 3D-printed concrete. This provides a simpler method for assessing concrete printability without complex equipment.

Keywords:

3D printing concrete consistency mortars rheology measurements shear level shear stress viscosity

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Published on: January 7, 2019

Area of Science:

Materials Science
Civil Engineering
Construction Technology

Background:

Three-dimensionally printed concrete offers solutions for housing shortages and architectural innovation.
Assessing the material quality and printability of 3D-printed concrete is crucial for its widespread adoption.
Traditional testing methods may not fully capture the complex rheological behavior of 3D-printed concrete.

Purpose of the Study:

To investigate the correlation between conventional testing methods and the rheological properties of 3D-printed concrete.
To propose a more precise material quality assessment using traditional techniques.
To establish a link between empirical testing and rheometer measurements for evaluating printability.

Main Methods:

Standard tests were conducted to evaluate the consistency of 3D-printed concrete materials.
A rheometer was used to accurately measure key rheological properties, including yield stress and viscosity.
The flow table test was employed and its results were correlated with rheological parameters.

Main Results:

A significant correlation was identified between the flow table test and rheological coefficients like yield stress and viscosity.
The flow table test proved effective for a preliminary assessment of 3D-printed concrete's printability.
The study successfully established a relationship between flow table tests and rheological parameters.

Conclusions:

The flow table test can serve as a practical tool for preliminary printability assessment of 3D-printed concrete.
Establishing correlations between conventional and rheometer tests simplifies material evaluation.
Further research with diverse materials and print-test experiments is needed to refine these correlations.