Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Prediction model of compressive strength of foamed concrete considering pore size distribution
Highlights A prediction model of compressive strength considering pore size distribution have been proposed. The parameter of the “Pore Synthesis Impact Factor” considering both porosity and pore size have been proposed. The effects of dry density, water-cement ratio and oaming agent type. on porosity, pore size distribution and compressive strength have been studied.
Abstract To more accurately evaluate the relationship between pores and compressive strength of foamed concrete, the effects of density, water-cement ratio, and foaming agent type on porosity, pore size distribution, and compressive strength were studied. It was found that as the density decreased and the water-cement ratio increased, the number of larger-sized pores increased and the pore size distribution became wider and more non-uniform. Further, the pore structure of lower-density foamed concrete was more susceptible to the influence of density and water-cement ratio more likely to produce larger size pores. Particularly, foaming agent type had a significant effect on the pore size distribution. The pore size variation of foamed concrete was primarily attributed to the initial size of fresh foam and the complex merging and escape phenomena occurring in the foam in the slurry, the process of preparation and forming. It was also found that smaller porosity and more concentrated and uniform pore size distribution were more beneficial for strength. Additionally, to quantify the combined effect of porosity and pore size distribution on compressive strength, this paper innovatively proposes the parameters of the “pore synthesis impact factor”. Finally, a new empirical model relating the porosity, size distribution, and compressive strength is presented.
Prediction model of compressive strength of foamed concrete considering pore size distribution
Highlights A prediction model of compressive strength considering pore size distribution have been proposed. The parameter of the “Pore Synthesis Impact Factor” considering both porosity and pore size have been proposed. The effects of dry density, water-cement ratio and oaming agent type. on porosity, pore size distribution and compressive strength have been studied.
Abstract To more accurately evaluate the relationship between pores and compressive strength of foamed concrete, the effects of density, water-cement ratio, and foaming agent type on porosity, pore size distribution, and compressive strength were studied. It was found that as the density decreased and the water-cement ratio increased, the number of larger-sized pores increased and the pore size distribution became wider and more non-uniform. Further, the pore structure of lower-density foamed concrete was more susceptible to the influence of density and water-cement ratio more likely to produce larger size pores. Particularly, foaming agent type had a significant effect on the pore size distribution. The pore size variation of foamed concrete was primarily attributed to the initial size of fresh foam and the complex merging and escape phenomena occurring in the foam in the slurry, the process of preparation and forming. It was also found that smaller porosity and more concentrated and uniform pore size distribution were more beneficial for strength. Additionally, to quantify the combined effect of porosity and pore size distribution on compressive strength, this paper innovatively proposes the parameters of the “pore synthesis impact factor”. Finally, a new empirical model relating the porosity, size distribution, and compressive strength is presented.
Prediction model of compressive strength of foamed concrete considering pore size distribution
Bian, Pengfei (Autor:in) / Zhang, Meng (Autor:in) / Yu, Qijun (Autor:in) / Zhan, Binggen (Autor:in) / Gao, Peng (Autor:in) / Guo, Binglin (Autor:in) / Chen, Yuyang (Autor:in)
05.10.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
On entrained pore size distribution of foamed concrete
| Elsevier | 2014
On entrained pore size distribution of foamed concrete
| Online Contents | 2015