Review of Rheology in Cement-Based Materials and Its Application to 3D Printing Using Concrete

Abstract

This review briefly summarizes introductory understandings of concrete rheology and applications in which rheology plays an important role. A mixture of cement and water is the rheological material classified as dispersed systems involving chemical reactions, and it has been considered the most challenging research subject in the field of rheology. This review introduces the most crucial chemical admixture for fresh concrete controlling rheological properties (so-called superplasticizer) after summarizing the fundamental knowledge of concrete rheology. In addition, recent research trends on 3D printing using concrete, riddled with rheological challenges, are introduced.

Analysis of Non-Gaussian Diffusion of Hydrogen and Oxygen in Cement Paste Using a Two-State Fluctuating Diffusivity Model

“…The probability density of the molecule displacement obeys the diffusion equation with the fluctuating diffusivity as described in Equation. (1). The time dependence of G(r; t) is determined when the stochastic process of the time-dependent diffusion coefficient D(t) is provided.…”

“…Cementitious materials are recognized globally as the second most utilized substances after water. 1) Since Joseph Aspdin's invention of Portland cement in 1824, which continues to be the most prevalent cementitious material, these substances have played a critical role in constructing infrastructure around the world. Reinforced concrete (RC) structures have characteristic member cross-sections where concrete encases steel bars.…”

Rheological behaviour, setting time, compressive strength and microstructure of mortar incorporating supplementary cementitious materials and nano-silica

“…However, with the development of concrete technologies in both construction methods and materials, the slump test alone is insufficient to represent all the properties related to the constructions. For instance, the ultra-high performance concrete (UHPC), [1][2][3] selfconsolidated concrete (SCC), 4,5 3D printing concrete, [6][7][8][9][10] shotcrete, 11 etc. all need more complex tests on the rheological behavior of the mixture.…”

Rheological properties and micro-mesoscopic mechanisms of complex particle suspensions: A review

“…, 它们的加工特性和使用性能往往与其流 变行为紧密相关. 比如, 在3D打印中需要控制被挤出材 料的黏性和弹性之间的平衡, 以达到更好的打印精 度 [4] ; 在Kavlar织物中浸入剪切增稠液制成的防弹衣, 具有更好的防弹性能和穿着舒适度 [5] . 在实际应用中, 往往通过大量的实验表征和经验建模实现流变行为的 预测, 仍缺乏广泛认可的本构模型 [6] .…”