Properties of Composite Modified with Limestone Powder for 3D Concrete Printing

Skibicki, Szymon; Kaszyńska, Maria; Wahib, Nawid; Techman, Mateusz; Federowicz, Karol; Zieliński, A.; Wróblewski, Tomasz; Olczyk, Norbert; Hoffmann, Marko

doi:10.1007/978-3-030-49916-7_13

Cited by 17 publications

(14 citation statements)

References 15 publications

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“…Looking at the mixes modified with the limestone powder, it can be said that its addition improves the development of the compressive strength for longer cycle times t p . The limestone powder improves overall mechanical performance of the mixes which concurs with other studies [80,[85][86][87].…”

supporting

confidence: 91%

“…The ratio of load-bearing capacity σ sr,0.04 /σ sr,kol for mixes ranges between 1.48 and 1.97 which constitutes to a mean of 1.77; CoV = 0.0739. Similar results for printed columns and samples in the squeezing test were obtained in [80]. Comparison of the results is presented in Figure 17.…”

Section: Evaluation Of Load-bearing Capacity During the Printing Processsupporting

confidence: 75%

“…The initial adjustments for each mix were performed to determine the required amount of superplasticizer to reach the assumed slump flow of 160 ± 5 mm. Such value of the slump flow is recommended for 3D printing mixes and was established based on our own research [26,80] and other studies [45,81]. The slump flow in accordance with [82] was determined after 15, 30, and 45 min after adding the water.…”

Section: Workability Of Mixesmentioning

confidence: 99%

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3D Concrete Printing for Sustainable Construction

2020

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Despite the rapid development of 3D printing technology for cement composites, there are still a number of unsolved issues related to extrusion printing. One of them is proper mix design that allows for meeting criteria related to the printing of cementitious materials, such as pumpability, buildability, consistency on the materials, flowability and workability, simultaneously incorporating sustainable development ideas. In the case of mixes for 3D printing, the modification of the composition which increases the overall performance does not always go hand in hand with the reduction of negative environmental impact. The article presents the results of tests of eight mixtures modified with reactive and inert mineral additives designed for 3D printing. The mixes were evaluated in terms of their rheological and mechanical properties as well as environmental impact. Initial test results were verified by printing hollow columns up until collapse. Later, the differences between the compressive strength of standard samples and printed columns were determined. In order to summarize the results, a multi-faceted analysis of the properties of the mixes was carried out, introducing assessment indicators for its individual parameters. The article proves that appropriate material modification of mixes for 3D printing can significantly reduce the negative impact on the environment without hindering required 3D printing properties.

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confidence: 91%

Section: Evaluation Of Load-bearing Capacity During the Printing Processsupporting

confidence: 75%

Section: Workability Of Mixesmentioning

confidence: 99%

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3D Concrete Printing for Sustainable Construction

2020

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“…Additional binders and admixtures are commonly used in 3DPC to modify the thixotropy of the mixture, which improve the properties of extrudability, pumpability and buildability. Moreover, supplementary cementitious materials (SCMs) such as silica fume or limestone powder are used to modify the rheological properties of mixtures along with decreasing the cement content in the mixtures Skibicki et al 2020). Additionally, nanomaterials have gathered particular attention due to their unique physical properties as well as significant chemical reactivity, which is the result of their ultra-fine size and high-specific surface area (Sikora et al 2018).…”

Section: Design Formulations For 3d Printable Cementitious Compositesmentioning

confidence: 99%

The effects of nano- and micro-sized additives on 3D printable cementitious and alkali-activated composites: a review

et al. 2021

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Additive manufacturing (AM), also referred as 3D printing, is a technology that enables building automated three-dimensional objects in a layer-by-layer manner. AM of cement-based and alkali-activated composites has gathered attention over the last decade and is one of the most rapidly developing civil engineering fields. Development of proper mixture compositions which are suitable in fresh and hardened state is one of the key challenges of AM technology in construction. As the behaviour of cement-based materials (CBM) and alkali-activated materials (AAM) is determined by chemical and physical processes at the nano-level, incorporation of nano- and micro-sized admixtures has great influence on the performance of printable composites. These modifications are attributed to the unique reactivity of nanoparticles associated with their small size and large surface area. This review paper summarizes recent developments in the application of nano- and micro-particles on 3D printable cementitious composites and how they influence the performance of 3D-printed construction materials. The research progress on nano-engineered CBM and AAM is reviewed from the view of fresh and hardened properties. Moreover, comparison between nano- and micro-sized admixtures including nanosilica, graphene-based materials, and clay nanoparticles as well as chemical admixtures such as viscosity-modifying admixtures and superplasticizers is presented. Finally, the existing problems in current research and future perspectives are summarized. This review provides useful recommendations toward the significant influence of nano- and micro-sized admixtures on the performance of 3D printable CBMs.

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“…For technological reasons, mixes usually only contain fine aggregate [ 38 , 47 , 48 , 49 , 50 , 51 ]. The fine aggregate used is often modified with various micro-fillers to improve the rheological properties [ 52 , 53 , 54 , 55 , 56 ]. The preservation of the required parameters is also achieved by using combinations of chemical admixtures [ 39 , 46 , 47 , 49 , 57 , 58 ]: accelerating, slowing down, modifying viscosity, or other.…”

Section: Introductionmentioning

confidence: 99%

Foundation Piles—A New Feature for Concrete 3D Printers

et al. 2021

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Foundation piles that are made by concrete 3D printers constitute a new alternative way of founding buildings constructed using incremental technology. We are currently observing very rapid development of incremental technology for the construction industry. The systems that are used for 3D printing with the application of construction materials make it possible to form permanent formwork for strip foundations, construct load-bearing walls and partition walls, and prefabricate elements, such as stairs, lintels, and ceilings. 3D printing systems do not offer soil reinforcement by making piles. The paper presents the possibility of making concrete foundation piles in laboratory conditions using a concrete 3D printer. The paper shows the tools and procedure for pile pumping. An experiment for measuring pile bearing capacity is described and an example of a pile deployment model under a foundation is described. The results of the tests and analytical calculations have shown that the displacement piles demonstrate less settlement when compared to the analysed shallow foundation. The authors indicate that it is possible to replace the shallow foundation with a series of piles combined with a printed wall without locally widening it. This type of foundation can be used for the foundation of low-rise buildings, such as detached houses. Estimated calculations have shown that the possibility of making foundation piles by a 3D printer will reduce the cost of making foundations by shortening the time of execution of works and reducing the consumption of construction materials.

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Properties of Composite Modified with Limestone Powder for 3D Concrete Printing

Cited by 17 publications

References 15 publications

3D Concrete Printing for Sustainable Construction

3D Concrete Printing for Sustainable Construction

The effects of nano- and micro-sized additives on 3D printable cementitious and alkali-activated composites: a review

Foundation Piles—A New Feature for Concrete 3D Printers

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