Procedures and Algorithms for: A 3D three-phase meso-scale model for simulation of chloride diffusion in concrete

1. Introduction
This program is associated with the paper called ‘A 3D three-phase meso-scale model for simulation of chloride diffusion in concrete’ as research data. It serves as an example to validate the proposed model in this paper based on the experimental data of the chloride diffusion test in concrete at 60 d in literature.

2. Program listing:
MATLAB:
(1) Mainroutine_Matlab.m
%% Program for generating the aggregates information including coordinates, diameters, number.
(2) fuller_3D.m
%% This is a function used to generate aggregate diameter randomly.
(3) agg_volu.m
%% Program for calculating the volume of aggregates embedded in each layer.
(4) rec_agg_volu.m
%% Program for generating the volume of mortar embedded in each layer.
(5) draw_patch.m
%% This program is used to display geometries of the propose 3D three-phase mesoscale model in this paper.
(6) mat_postprocess.m
% This program is used to draw the results of the proposed model against the experimental data and analytical solution.

ANSYS APDL:
!! FEM programming regarding simulating the chloride diffusion in mesoscopic concrete through the redevelopment of APDL in the ANSYS software
(1) Mainroutine.mac
(2) Datapre.mac
!! Initiation of parameters and variables
(3) Preprocess.mac
!! Preprocessor (generate geometries, elements and materials; meshing)
(4) Solve.mac
!! Solve (impose boundary conditions and loads (the initial chloride concentration); Finite element solution)
(5) Postprocess.mac
!! Postprocessor (postprocessing)

Txt files:
(1) coordinates.txt
Record aggregates information: the first column is for serial numbers; the second, third, fourth columns are for the coordinates of x, y, z (m), respectively; the fifth column is for aggregate radii (m).
(2) ratio_exp.txt
Experimental data in literature. The first column corresponds to depth/mm. The second, third, fourth, fifth, sixth columns correspond to measured chloride concentration (%) at 60 days, 120 days, 240 days, 360 days and 480 days respectively in literature.