Static and dynamic modulus and micro-structure studies of highly elastic polymers fiber foamed concrete
LIANG Jizhe
TAO Jianli
JIAN Yijun
WANG Yanzi
LI Cunsheng
ZHANG Xinyi
ZHANG Hongbo
Abstract：The article replaces part of cement with rubber particles in foam light soil,and add polypropylene fiber,and ana-lyzes the effects of rubber substitution rate,rubber particle size,fiber content,and wet density on the compressive strength,static and dynamic modulus of Highly Elastic Polymers Fiber Foamed Concrete(EPFFC),and analyzes the influencing mechanism.The results show that the rubber substitution rate is negatively related to the strength and stiffness of EPFFC,and its substitution rate should be controlled within 10%,but it has the ability to enhance the deformation and vibration damping of EPFFC;the rubber particle size helps to form the skeleton structure,and at the same time,it will impede the occurrence of the hydration reaction,and the optimal rubber particle size is 0.85 mm;When the fiber content is 0.2%,a three-dimensional network structure is formed,at which the compressive strength is the highest,and the static and dynamic elastic moduli are significantly enhanced.Because the pore structure tends to be stable,the wet density is positively correlated with the stiffness of the EPFFC,and the modulus increase is the largest when the wet density increases from 600 to 800 kg/m3.
Keywords：foam concreterubber particlespolypropylene fiberstatic modulusdynamic modulus
Publication Date：2025-02-24
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 59-65 )