The role of early age structural build-up in digital fabrication with concrete

By L. Reiter, T. Wangler, Nicolas Roussel, Robert J. Flatt. Cement and Concrete Research, 2018

373 citations recorded by the source corpus.

Abstract The advent of digital fabrication for concrete calls for advancing our understanding of the entanglement of processing technology, rheology, admixture use and hydration control, in addition to developing novel measurement and control techniques. We provide an overview of recently proposed building processes, defining the type and range of yield stress evolution that they require for successful building. In doing so, we explain which mechanisms are at stake and how their consequences can be measured. Controlling the structural build-up of concrete with the precision required by digital processes will be at the heart of future progress. For this, chemically controlling cement hydration of concrete is essential and we provide an overview of admixtures, focusing on “set on demand” solutions, concluding that activators should be added as closely to the delivery point as possible. Advantages and limitations are discussed and showcased using recent successes in process scaling and material and process control.

Subfields: Building and Construction, Civil and Structural Engineering, Earth-Surface Processes

View Paper: https://www.semanticscholar.org/paper/4a25355305dc10fd4c2a577a0deae9491fba1150

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Citations in the corpus

Improving printability of limestone-calcined clay-based cementitious materials by using viscosity-modifying admixture (2020, background): “[30], VMA could enhance flocculation of cement grains through providing more contacts and bridges between cement particles, which will promote the evolution of green strength for the deposited layers.”
Structural behaviour of 3D printed concrete beams with various reinforcement strategies (2021, background): “The chemical principles and strategies for set on-demand processes can be found elsewhere [47,48].”
Concrete material science: Past, present, and future innovations (2018, background): “This shows that, apart from a kinetic benefit (which is very important in current construction practice and even more in several digital fabrication technologies with concrete [172,173]), homogeneous seeding did not succeed in increasing the average density of the hydrate paste.”
Method of enhancing interlayer bond strength in construction scale 3D printing with mortar by effective bond area amplification (2019, background): “As the phase change requirements of the 3D printed concrete are succumbed to shape retention and the sequential loading of fresh layers, the interlayer strength quality becomes a balancing act of the drying rate [16,17].”
The role of deep learning in urban water management: A critical review. (2022, background): “Computer simulations have been playing an increasingly significant role in water management since they were pioneered for the planning and design of water resources systems in the Harvard Water Programme in 1955 (Reuss, 2003).”