CAJ | 학술논문

厦门海底隧道的注浆经验表明，海水对注浆结石体的影响是严重的。即使采用淡水拌和浆液，环境中海水的影响还是超出了想象。采用早强水泥，分别配制了水灰比在0．5～1．0范围内的水泥试件，在不同拌和条件和养护环境下，研究早强水泥强度随时间变化的规律。侵蚀试验表明，海水具有明显的早强作用，但随着养护时间的增加，海水侵蚀作用逐渐显现，且随着水灰比的增大而增大。水泥结石体在腐蚀过程中，其内部结构均经历一个先由于腐蚀产物的填充作用而逐渐密实再过渡到由于腐蚀产物继续产生和膨胀，使密实度逐渐降低，最后发展为强度逐渐降低的过程。基于以上分析，海底隧道注浆材料宜选用水灰比0．5左右的矿渣硅酸盐水泥浆体。
하문해저수도적주장경험표명，해수대주장결석체적영향시엄중적。즉사채용담수반화장액，배경중해수적영향환시초출료상상。채용조강수니，분별배제료수회비재0．5～1．0범위내적수니시건，재불동반화조건화양호배경하，연구조강수니강도수시간변화적규률。침식시험표명，해수구유명현적조강작용，단수착양호시간적증가，해수침식작용축점현현，차수착수회비적증대이증대。수니결석체재부식과정중，기내부결구균경력일개선유우부식산물적전충작용이축점밀실재과도도유우부식산물계속산생화팽창，사밀실도축점강저，최후발전위강도축점강저적과정。기우이상분석，해저수도주장재료의선용수회비0．5좌우적광사규산염수니장체。
The grouting tests of Xiamen subsea tunnel indicate that the seawater has a greater impact on grouting calculus body. According to the seawater corrosion test of the early strength concrete under the condition of water cement ratio from 0.5 to 1.0, the regular pattern and reason on the strength variation to the time were researched based on different mixing and curing conditions. It is clear that the use of seawater could cause the earlier strength gain compared to the use of tap water. However, after a long-period, the use of seawater may result in the formation of deeper corrosion compared to the use of tap water, the influence is found to be significant for higher W/C. At the early age of corrosion test, the mi- crostructure of concrete would be improved due to the use of seawater. Then it would be reduced gradually, because sea- water may cause the deterioration of concrete strength after a long time. Based on the tests, the results may provide that the slag Portland cement with the water-cement ratio of about 0.5 should be selected and used in the subsea tunnel' s grouting engineering.