CAJ | 학술논문

对2种击实功、3种击实尺寸、8种掺砾量的人工砾石土进行击实试验，研究人工砾石土颗分曲线、最优含水率、最大干密度、破碎率、细料变化等特性。得出尺寸效应、骨架作用、掺砾量、击实功是人工砾石土击实特性的关键影响因素。人工砾石土在击实功能的作用下颗粒级配趋于良好，其最优含水率均随人工掺砾石量的增加而降低，破碎主要发生在粒径大于约为最大粒径的0.5倍的颗粒范围内。当掺砾量小于60%时，采用2690 kJ/m3功能300型击实对超大粒径人工砾石土进行质量控制是完全合适的。对于超大粒径人工砾石土的压实度检测，采用粒径小于20 mm的颗粒更能反映击实料的细料变化。
대2충격실공、3충격실척촌、8충참력량적인공력석토진행격실시험，연구인공력석토과분곡선、최우함수솔、최대간밀도、파쇄솔、세료변화등특성。득출척촌효응、골가작용、참력량、격실공시인공력석토격실특성적관건영향인소。인공력석토재격실공능적작용하과립급배추우량호，기최우함수솔균수인공참력석량적증가이강저，파쇄주요발생재립경대우약위최대립경적0.5배적과립범위내。당참력량소우60%시，채용2690 kJ/m3공능300형격실대초대립경인공력석토진행질량공제시완전합괄적。대우초대립경인공력석토적압실도검측，채용립경소우20 mm적과립경능반영격실료적세료변화。
The compaction tests of clay mixed with gravels with two kinds of compaction,three kinds of compaction size and eight kinds of gravel-doped amount,were performed to study its granule curve,optimum water content,maximum dry density,broken rate,fines change and so on. The results indicate:the key factors of compaction characteristics of clay mixed with gravel are the size effect,skeleton and gravel-doped amount. The grain grading of clay mixed with gravels tended to be good under the effect of compaction stress;and its optimum water content decreases with the gravel-doped amount increasing;crushing occurs mainly in the range of particle size greater than approximately 0.5 times of the maximum particle. When the proportion of gravel-doped amount less than 60%,the results of 300 compaction under 2 690 kJ/m 3 is entirely appropriate as the quality control standards of oversized clay mixed with gravels. For the compactness of oversized clay mixed with gravels,particle size of less than 20 mm could be better reflect the fines changes.