Mix Proportion Optimization and Anti-scouring Performance of No-Fines Concrete Base
LIU Hongfu
TAN Fangling
YE Runxin
CAI Jun
HUANG Yunyong
Abstract：To improve the anti-scouring performance of no-fines concrete base material,the optimal mix proportion of no-fines concrete was determined by the response surface method,using 7-day unconfined compressive strength,permeability coefficient,and compressive resilient modulus as the evaluation indices.The scouring test of no-fines concrete was carried out to analyze the effects of scouring time,scouring frequency,and impact strength on anti-scouring performance and to reveal the attenuation law of strength and modulus of no-fines concrete after different scouring conditions.The results show that the optimal mix ratio of no-fines concrete is gradation Ⅰ,with a water-cement ratio of 0.35 and a target porosity of 18%.Compared to cement-stabilized gravel,no-fines concrete exhibits better mechanical properties and anti-scouring performance.
Keywords：no-fines concreteresponse surface methodmix proportionanti-scouring performancemechanical property
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：8( 518-525 )