Experimental Evaluation of Compressive Strength and Gas Permeability of Glass- Powder-Containing Mortar  

作　　者：Yue Liang Wenxuan Dai Wei Chen 

机构地区：[1]School of Civil Engineering,Architecture and Environment,Hubei University of Technology,Wuhan,430068,China

出　　处：《Fluid Dynamics & Materials Processing》2023年第10期2639-2659,共21页流体力学与材料加工（英文）

基　　金：This work is supported by the National Natural Science Foundation of China(No.51709097).

摘　　要：Glass powder of various particle sizes(2,5,10 and 15μm)has been assessed as a possible cement substitute for mortars.Different replacement rates of cement(5%,10%,15%,and 20%)have been considered for all particle sizes.The accessible porosity,compressive strength,gas permeability and microstructure have been investigated accordingly.The results have shown that adding glass powder up to 20%has a significantly negative effect on the porosity and compressive strength of mortar.The compressive strength initially rises with a 5%replacement and then decreases.Similarly,the gas permeability of the mortar displays a non-monotonic behavior;first,it decreases and then it grows with an increase in the glass powder content and particle size.The porosity and gas permeability attain a minimum for a 5%content and 10μm particle size.Application of a Nuclear magnetic resonance(NMR)technique has revealed that incorporating waste glass powder with a certainfineness can reduce the pore size and the number of pores of the mortar.Compared with the control mortar,the pore volume of the waste glass mortar with 5%and 10μm particle size is significantly reduced.When cement is partially replaced by glass powder with a particle size of 10μm and a 5%percentage,the penetration resistance and compressive strength of the mortar are significantly improved.

关 键 词：Waste glass powder MORTAR POROSITY gas permeability compressive strength NMR 

分 类 号：TQ171.1[化学工程—玻璃工业]