Classification Evaluation and Response Threshold of Pore Structure of Pumice Concrete in Cold Regions
WANG Xiaoxiao
DONG Peisen
YAN Changwang
LIU Shuguang
ZHANG Ju
Abstract：Gain coefficient(Ygp)and damage coefficient(Cgp)were calculated based on the porosity,pore size distribution and fractal dimension of pumice concrete.The critical points of hydration degree and damage degree were obtained through the classification of threshold index,and the gain threshold and damage threshold were determined according to the classification evaluation and macro performance.The results show that 0.947<Ygp≤1.000 indicates adequate hydration,0.927<Ygp≤0.947 indicates average hydration,and 0.912≤Ygp≤0.927 indicates poor hydration.1.00≤Cgp≤1.07 indicates minor injury,1.07<Cgp≤1.16 indicates moderate injury,and 1.16<Cgp≤1.51 indicates severe injury.This work provides a method for grading and quantitative evaluation of hydration degree and damage degree of pumice concrete in cold regions.
Keywords：pumice concretecuring phasefreeze-thaw cyclepore predictionthreshold analysis
Publication Date：2025-06-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 526-535 )