Related Experiment Video
Updated: Aug 29, 2025
11:07
Preparation of Aligned Steel Fiber Reinforced Cementitious Composite and Its Flexural Behavior
Published on: June 27, 2018
11.2K
Properties of 3D Printed Concrete-Geopolymer Hybrids Reinforced with Aramid Roving
Joanna Marczyk1, Celina Ziejewska1, Kinga Korniejenko1
1Faculty of Materials Engineering and Physics, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland.
Materials (Basel, Switzerland)
|September 9, 2022
Summary
Three-dimensional concrete printing (3DCP) enables novel concrete-geopolymer hybrids reinforced with aramid roving. These 3D-printed materials show promising durability and thermal properties compared to conventional methods.
Area of Science:
- Materials Science
- Civil Engineering
- Additive Manufacturing
Background:
- Three-dimensional concrete printing (3DCP) offers significant potential for revolutionizing construction processes.
- The integration of geopolymer binders and advanced reinforcement presents new avenues for material development.
Purpose of the Study:
- To investigate the feasibility of 3D printing concrete-geopolymer hybrids reinforced with aramid roving.
- To compare the properties of 3D-printed and conventionally cast samples under various environmental stresses.
Main Methods:
- Production of reference concrete and concrete-geopolymer hybrid samples (95% concrete, 5% geopolymer).
- Incorporation of 0.5% (wt.) aramid roving for reinforcement.
- Evaluation of frost resistance, UV radiation resistance, thermal conductivity, and compressive strength.
Main Results:
- 3D-printed samples exhibited slightly better strength retention after frost resistance tests compared to cast samples.
- Concrete-geopolymer hybrids demonstrated a higher thermal conductivity coefficient than concrete reinforced with aramid roving.
- Both 3D printing and geopolymer incorporation influenced material properties.
Conclusions:
- 3DCP of concrete-geopolymer hybrids reinforced with aramid roving is feasible.
- The developed materials show comparable or improved performance in durability and thermal properties.
- This technology holds promise for advanced construction applications.
Related Concept Videos
01:22Fiber Reinforced Concrete
125
Fiber-reinforced concrete significantly enhances the structural and nonstructural properties of traditional concrete by incorporating fibers like steel, glass, and polymers. These fibers, varying from natural ones such as sisal and cellulose to manufactured ones like polypropylene and Kevlar, are mixed into hydraulic cement with aggregates. Steel fibers, often preferred for their robustness, contribute to improved ductility, toughness, and post-cracking performance. The concrete is classified...
125
01:25Accelerated Curing of Concrete
233
Accelerating concrete curing is achieved by applying heat and additional moisture. This process accelerates the hydration of the cement, resulting in an earlier strength gain in the concrete. Steam curing is a method wherein the concrete products are either transported through a chamber on a conveyor belt or encased in plastic, allowing steam at atmospheric pressure to circulate freely around them. This process begins with a phase of moist curing that typically lasts between 3 to 5 hours, after...
233
01:16Tensile Strength Considerations of Concrete
189
Considering the tensile strength of concrete involves recognizing that the theoretical strength of cement paste can be up to a thousand times higher than what is observed in practical applications. This significant discrepancy is largely attributed to the presence of microscopic cracks within the concrete. These cracks tend to amplify stress at their tips when a load is applied, a phenomenon explained by Griffith's theory of brittle fracture.
The dimensions and shape of a concrete specimen...
The dimensions and shape of a concrete specimen...
189
01:23Abrasion Resistance of Concrete
189
Abrasion resistance is an essential characteristic of concrete that determines its durability and longevity under various wear conditions. Concrete surfaces are vulnerable to different types of abrasion. For instance, surfaces may wear down due to the constant movement of vehicles or be eroded by solids carried in water, as seen in concrete canal linings. Specific tests are conducted to measure the abrasion resistance of concrete.
One such test is the revolving disc test, where three plates...
One such test is the revolving disc test, where three plates...
189
01:29Additives and Fillers in Concrete
124
Additives and fillers are integral to enhancing the properties of concrete. Pozzolans and blast-furnace slag are additives or admixtures due to their reactions with calcium hydroxide released during cement hydration. Fillers, which are finely ground and similar in fineness to Portland cement, improve concrete attributes such as workability density, and reduce capillary bleeding or cracking. Some fillers possess hydraulic properties or participate in benign reactions within the cement paste.
The...
The...
124
01:20Prestressed Concrete
245
Prestressed concrete is a construction technique designed to enhance the strength and durability of concrete structures. This method involves the application of a pre-set tension to high-strength steel strands used as reinforcement before the concrete is subjected to its working loads. The primary aim of prestressing is to place the concrete in a state of compression, in order to counteract the tensile forces it will experience in service. This pre-compression helps prevent crack formation in...
245