首页|An extended numerical model of the first exothermic peak for three dimensional printed cement-based materials
An extended numerical model of the first exothermic peak for three dimensional printed cement-based materials
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The first exothermic peak of cement-based material occurs a few minutes after mixing,and the properties of three dimensional(3D)printed concrete,such as setting time,are very sensitive to this.Against this background,based on the classical Park cement exothermic model of hydration,we propose and construct a numerical model of the first exothermic peak,taking into account the proportions of C3S,C3A and quicklime in particular.The calculated parameters are calibrated by means of relevant published exothermic test data.It is found that this developed model offers a good simulation of the first exothermic peak of hydration for C3S and C3A proportions from 0 to 100％of cement clinker and reflects the effect of quicklime content at 8％-10％.The unique value of this research is provision of an important computational tool for applications that are sensitive to the first exothermic peak of hydration,such as 3D printing.
3D printed cement-based materialscement hydrationthe first exothermic peakliquid quick-setting agentnumerical model
Wei JIANG、Wenqian LI、Xi CHEN
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School of Materials Science and Engineering,Tongji University Shanghai 200092,China
School of Civil Engineering,Tongji University,Shanghai 200092,China
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