Evolutionary lattice model for the compaction of pervious concrete in the fresh state

Pieralisi, Ricardo; Cavalaro, Sérgio Henrique Pialarissi; Aguado, Antonio

doi:10.1016/j.conbuildmat.2015.08.143

Cited by 18 publications

(8 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A bi-phasic spherical particle shown in Fig. 4a was used [14,15,32,33]. It was formed by an inner core with radio R ag surrounded by an external layer with thickness t eq .…”

Section: Compaction Modelmentioning

confidence: 99%

“…The porosity is achieved by reducing the amount of fines provided by the sand, as well as by the precise control of the level of compaction applied during execution. The compaction process governs the spatial distribution and sizes of the pores [14,15], having a crucial influence in the final permeability [11,16]. Slight variations in the compaction applied may render a highly permeable PC into an almost watertight material.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Advanced numerical assessment of the permeability of pervious concrete

Pieralisi

Cavalaro

Aguado

2017

Cement and Concrete Research

Self Cite

View full text Add to dashboard Cite

The most singular characteristic of pervious concrete is its interconnected porosity that allows water to flow through at high rates. The objective of this paper is to develop and validate an advanced DEM-CFD model to assess the permeability of pervious concrete numerically, taking into account the influence of the composition and of the compaction process. An extensive experimental program with 1 aggregate grading size, 4 paste contents and 3 degrees of compaction was conducted to validate the numerical approach. Results show that the DEM-CFD model is capable of predicting the permeability depending on the variables considered here. Moreover, flow parameters derived from the numerical simulations help understand the experimental results. The study confirms that, instead of relying on trial and error experiments, it is possible to use advanced numerical models to accelerate the definition of mixes and the production process, reducing the time, efforts and costs required.Peer ReviewedPostprint (author's final draft

show abstract

“…A bi-phasic spherical particle shown in Fig. 4a was used [14,15,32,33]. It was formed by an inner core with radio R ag surrounded by an external layer with thickness t eq .…”

Section: Compaction Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Advanced numerical assessment of the permeability of pervious concrete

Pieralisi

Cavalaro

Aguado

2017

Cement and Concrete Research

Self Cite

View full text Add to dashboard Cite

show abstract

“…Few alternatives are available in the literature to simulate the compaction process of pervious concrete. An alternative to the approach proposed here is the Evolutionary Lattice Model (ELM) developed by Pieralisi et al [30]. This has only been applied for 2D simulations of the process and assumes circular particles as well as a simplified constitutive law for the interaction between particles.…”

Section: Comparison With the Evolutionary Lattice Model (Pieralisi Etmentioning

confidence: 99%

“…The calibration of the parameters needed to simulate the compaction with the ELM [30] were performed with the experimental and numerical results obtained from the The results suggest that the ELM may be used for a rough approximation of the compaction process of pervious concrete. However, if more realistic estimations are necessary, the combination of the proposed constitutive law and DEM is a better option.…”

Section: Comparison With the Evolutionary Lattice Model (Pieralisi Etmentioning

confidence: 99%

Discrete element modelling of the fresh state behavior of pervious concrete

Pieralisi

Cavalaro

Aguado

2016

Cement and Concrete Research

Self Cite

View full text Add to dashboard Cite

The objective of this paper is to propose a novel numerical approach to evaluate the fresh state behavior of pervious concrete (PC). A new constitutive law applied to Discrete Element Method was developed for the simulation of the interaction between aggregates connected by fresh cement paste. Several innovative aspects regarding the type of contact model, the consideration of the contact bridge and the inclusion of the rheology coefficients were proposed. A calibration was performed with data from the literature. Furthermore, an extensive experimental program considering different shapes of aggregates, grading curves and aggregate-to-cement paste ratios was conducted to evaluate the fresh state behavior and validate the numerical models. The good fit obtained between numerical and experimental results confirm the model and the constitutive law reproduce the under uniaxial compaction, thus representing a step forward in the design and application of pervious concrete mixes.Peer ReviewedPostprint (author's final draft

show abstract

“…The permeability of the hardened PC is assessed by meshing the porous phase and the surface of the solids since the water flow is governed by the voids. More details on the mesh generation and mesh refinement can be found in [37]. The proper consideration of the CB's geometry is paramount given its influence in the total volume of voids and the tortuosity of the system, thus affecting the porosity and permeability.…”

Section: Pervious Concretementioning

confidence: 99%

Holistic modelling approach for special concrete: from fresh- to hardened-state

2019

View full text Add to dashboard Cite

In the construction industry, the design of dimensions and material properties is generally separated from the design of material composition and of the production processes used. Such divide is enabled by robust construction materials (like concrete) little affected by production processes if minimum precautionary measures are in place. The same does not hold true for special concrete types; whose higher sensibility compels a shift towards more comprehensive approaches that assimilate the production process in a holistic design. The design driven by integrated numerical simulations encompassing from production to the long-term performance is already ordinary in the manufacturing of plastic and metallic parts. Nevertheless, it remains an alien to the construction industry. The objective of this paper is to review existing studies that might underpin this holistic design approach in construction and show some of its capabilities. Advanced modelling strategies available to simulate the behaviour from the fresh- to the hardened-state are discussed for the cases of pervious concrete and fibre reinforced concrete. This approach provides a deeper insight about the material behaviour and aids to a new level of numerical optimisation of their compositions and production processes, unlocking a potential transformation of the modus operandi of the construction industry.

show abstract

Evolutionary lattice model for the compaction of pervious concrete in the fresh state

Cited by 18 publications

References 37 publications

Advanced numerical assessment of the permeability of pervious concrete

Advanced numerical assessment of the permeability of pervious concrete

Discrete element modelling of the fresh state behavior of pervious concrete

Holistic modelling approach for special concrete: from fresh- to hardened-state

Contact Info

Product

Resources

About