CAJ | 학술논문

水泥砾质土具有变形模量大、压缩性小和防渗性能好等优点，可以有效减小高土石坝心墙变形，改善高土石坝心墙应力状态。通过击实试验，研究在不同水泥掺入比和不同掺砾量下水泥砾质土的压实特性。结果表明：不同水泥掺入比下水泥砾质土的最大干密度和最优含水率均低于相同掺砾量下的砾质土；随着水泥掺入比的增大，相同掺砾量下水泥砾质土的最大干密度呈递减趋势，但减小幅度均小于1%；水泥砾质土的最优含水率随水泥掺入比的增大而增大，但增大幅度较小且始终小于相同掺砾量下砾质土的最优含水率。
수니력질토구유변형모량대、압축성소화방삼성능호등우점，가이유효감소고토석패심장변형，개선고토석패심장응력상태。통과격실시험，연구재불동수니참입비화불동참력량하수니력질토적압실특성。결과표명：불동수니참입비하수니력질토적최대간밀도화최우함수솔균저우상동참력량하적력질토；수착수니참입비적증대，상동참력량하수니력질토적최대간밀도정체감추세，단감소폭도균소우1%；수니력질토적최우함수솔수수니참입비적증대이증대，단증대폭도교소차시종소우상동참력량하력질토적최우함수솔。
Because cement-gravel soil has the advantages of high deformation modulus, low compressibility and high anti-permeability performance, it can effectively reduce the core wall deformation and improve the core wall stress state of high earth-rockfill dam. But little attention pays on compaction characteristics of the material now. This paper studied the compaction characteristics of cement-gravel soil with different cement mixing ratios and gravel contents through compaction test. The test results show that under the same gravel content maximum dry density and the optimum water content of cement-gravel soil with different cement contents is lower than that of gravelly soil. The maximum dry density of cemented-gravel soil shows a decreasing tendency with cement mixing ratio increasing. However, the decreased degree of the maximum dry density is less than one percent. The optimum water content of cemented-gravel soil shows a growing tendency with cement mixing ratio increasing. However, the optimum water content of cemented-gravel soil is always lower than that of gravelly soil.