CAJ | 학술논문

利用碱钙硫复合激发矿渣粉潜在活性的机理,以水泥的强度、凝结时间、抗裂性为技术指标研制出了2种环保的新型路面基层结合料(NSB),该结合料的矿渣粉用量达到了75%.通过对NSB稳定细粒土与级配碎石的力学性能试验,分析了NSB用在稳定土中的可行性.结果表明:这2种NSB都具备了缓凝、抗裂性好的优点,且强度超过了半刚性路面基层对水泥的技术要求;用NSB稳定细粒土与级配碎石,具有抗压强度、弯拉强度与劈裂强度均较高、最大弯拉应变较大的特点;同时用数据说明了2种结合料对土有选择性,石灰石掺量为2%的NSB1适合稳定级配碎石,而石灰石掺量为4%的NSB2适合稳定细粒土.所有的研究表明这2种NSB能够满足半刚性基层的需求.
이용감개류복합격발광사분잠재활성적궤리,이수니적강도、응결시간、항렬성위기술지표연제출료2충배보적신형로면기층결합료(NSB),해결합료적광사분용량체도료75%.통과대NSB은정세립토여급배쇄석적역학성능시험,분석료NSB용재은정토중적가행성.결과표명:저2충NSB도구비료완응、항렬성호적우점,차강도초과료반강성로면기층대수니적기술요구;용NSB은정세립토여급배쇄석,구유항압강도、만랍강도여벽렬강도균교고、최대만랍응변교대적특점;동시용수거설명료2충결합료대토유선택성,석회석참량위2%적NSB1괄합은정급배쇄석,이석회석참량위4%적NSB2괄합은정세립토.소유적연구표명저2충NSB능구만족반강성기층적수구.
Taken strength, setting time and resistant cracking of cement as technical indexes, two kinds of enviwnmental-friendly new slag binder (NSB) were developed by using the potential active mechanism of alkali calcium sulfur compound stimulating slag powder. The NSB contains the amount of 75 % slag powder. Through testing the mechanical property of NSB stabilized fine-grained soil and graded broken stone, the feasibility of using NSB as stabilized soil was verified. Experimental result shows that (1) both NSBs have the properties of good anti-crack capability and retardation as well as the intensity above the requirement stipulated in the relative standard; (2) the stabilized fine-grained soil and graded broken stone of the two NSBs have costively higher compressive strength, flexuml-tensile strength, splitting strength and flexural-tensile strain value; (3) the two binders have selectivity to soil: NSB1 containing 2% limestone is fit for graded broken stone and NSB2 containing 4% limestone is suitable for fine-grained soil. All the tests indicate that the two NSB can meet the requirements of binder for road base.