Open AccessInfluence of Aluminum Powder Content on Expansion Rate of Foamed Concrete
Author(s) -
Jiaqi Li,
Guangri Jin,
Hechun Quan,
Xin Jin,
Ming Jin
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/783/1/012065
Subject(s) - materials science , foaming agent , expansion ratio , cement , composite material , aluminium , aluminium powder , water–cement ratio , porosity
Foamed concrete is a heat preservation and noise reduction material made of cement and aluminum powder as foaming agent. The experiment mainly studies the influence of different water-cement ratio, foaming agent dosage and cement dosage on the expansion rate of foamed concrete test block. The experimental results show that when the water-cement ratio increases from 0.4 to 0.6, the expansion rate decreases gradually. When the content of aluminum powder foaming agent increased from 0.05% to 0.40%, the expansion rate showed a trend of “increasing first and then decreasing”. When other conditions are the same, the expansion rate of cement increases from 500kg/m 3 to 800kg/m 3 , showing a trend of “decreasing first and then increasing”.