[1]冀欣,盛燕萍,路再红,等.掺加钢渣的半刚性基层材料性能[J].长安大学学报(自然科学版),2021,41(4):21-31.
　JI Xin,SHENG Yan ping,LU Zai hong,et al.Properties of semirigid base material with steel slag[J].Journal of Chang’an University (Natural Science Edition),2021,41(4):21-31.
点击复制

掺加钢渣的半刚性基层材料性能()
分享到：

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
第41卷
期数:
2021年4期
页码:
21-31
栏目:
道路工程
出版日期:
2021-07-15

文章信息/Info

Title:
Properties of semirigid base material with steel slag
作者:
冀欣1; 2; 盛燕萍1; 2; 路再红3; 辛德军4; 龙云飞5; 陈华鑫1; 2
（1. 长安大学 材料科学与工程学院,陕西 西安 710061； 2. 长安大学 交通铺面材料教育部工程研究中心,陕西 西安 710064； 3. 内蒙古交通设计研究院,内蒙古 呼和浩特 010000； 4. 包头交通投资集团有限公司,内蒙古 包头 014030； 5. 包头市公路规划勘察设计有限公司,内蒙古 包头 014040）
Author(s):
JI Xin1; 2;  SHENG Yanping1; 2;  LU Zaihong3;  XIN Dejun4; LONG Yunfei5;  CHEN Huaxin1; 2
（1. School of Material Science and Engineering, Changan University, Xian 710061, Shaanxi, China； 2. Ministry ofEducation Engineering Center for Traffic Pavement Materials, Changan University, Xian 710064, Shaanxi, China；3. Inner Mongolia Transportation Design and Research Institute, Huhhot 010000, Inner Mongolia, China；4. Baotou Transportation Investment Group, Baotou 014030, Inner Mongolia, China）
关键词:
道路工程; 钢渣; 半刚性基层; 力学性能; 抗收缩性能; 抗冲刷性能
Keywords:
road engineering;  steel slag;  semirigid base;  mechanical property;  shrinkage resistance;  antierosion performance
文献标志码:
A
摘要:
为了实现固体废弃物钢渣在半刚性基层材料中的合理利用，首先选用CB3型骨架密实型级配进行击实试验，根据7 d无侧限抗压强度结果优选出适宜的水泥掺量和钢渣掺量组合。其次，对优选组合的混合料进行了无侧限抗压强度、间接抗拉强度、抗压回弹模量以及抗收缩和抗冲刷性能测试。最后，分析不同养护龄期下水泥掺量和钢渣掺量对基层材料性能的影响，揭示水泥和钢渣在基层材料中的强度形成机理。研究结果表明：水泥掺量一定时，钢渣基层材料无侧限抗压强度随钢渣掺量的增加呈现先增大后减小的趋势。水泥掺量（质量分数，下同）为5%时，与未掺钢渣基层材料相比，养护7、14、28 d的45%钢渣掺量基层材料抗压强度分别提高6.8%、9.6%、6.0%；65%钢渣掺量基层材料则分别提高11.3%、15.4%、12.1%。5%水泥掺量下，养护28 d的45%和65%钢渣掺量基层混合料较未掺钢渣基层混合料冲刷质量损失率减小0.031%和0.046%；6%水泥掺量下则分别减小0.034%和0.041%。5%水泥掺量下，65%钢渣掺量的混合料较未掺钢渣时干缩系数减小52.4%，温缩系数提高26.9%；6%水泥掺量下则分别减小49.4%和提高31.6%。因此，在合理掺量下，钢渣基层力学性能和抗冲刷性能明显优于普通水泥稳定碎石，钢渣在一定程度上可改善基层材料的抗干燥收缩性能，但却不利于抗温度收缩性能。
Abstract:
In order to realize the rational utilization of solid waste steel slag in semirigid base material, the CB3 type skeleton compaction gradation was selected, firstly, the compaction test was carried out, and the appropriate combination of cement and steel slag dosage was selected based on the results of the 7 d unconfined compressive strength test.Furthermore, following the unconfined compressive strength test, other parameters such as the indirect tensile strength, compressive resilience modulus, shrinkage and water erosion resistance of the chosen mixture were tested. Finally, the influence of cement dosage and steel slag content on the properties of base material at different curing ages were analyzed for revealing the strength formation mechanism, and influence that varying the proportions of cement and steel slag had on the base material.The results show that when cement dosage is kept constant, the unconfined compressive strength of steel slag base material increases at first, but then decreases with further increase steel slag content. Compared with the base material without steel slag, when the cement dosage and steel slag dosages (mass fraction, the same below) are 5% and 45% respectively, the compressive strength of the base material after 7,14 and 28 d curing increased by 6.8%, 9.6% and 6.0%respectively. Meanwhile, when steel slag content is increased to 65%, the compressive strength under the same conditions is increased by 11.3%, 15.4% and 12.1% respectively. In the water erosion resistance test,at 5% cement dosage,the post 28 d curing mass loss rate of the base material with 45% and 65% steel slag contents are 0.031% and 0.046% respectively, lower than that of the base mixture without steel slag content, and it is 0.034% and 0.041% respectively when cement dosage is increased to 6%. When compared with the mixture without steel slag, the dry shrinkage coefficient and temperature shrinkage coefficient of the mixture with 65% and 5%steel slag and cement contents decreased by 52.4% and 26.9% respectively, and when cement content is increased to 6%, it decreased by 49.4% and increased by 31.6% respectively.Therefore, it is obvious that at the appropriate dosage, the mechanical properties and antiscouring properties of steel slag base are better than those of ordinary cement stabilized macadam. In conclusion, steel slag can improve the antidrying shrinkage property of steel slag base material to some extent, even though it has no significant influence on the antitemperature shrinkage property. 9 tabs, 10 figs, 35 refs.

相似文献/References:

[1]武建民,祝伟,马士让,等.应用加权密切值法评价基质沥青抗老化性能[J].长安大学学报(自然科学版),2012,32(01):0.
[2]张宜洛,袁中山.SMA混合料结构参数的影响因素[J].长安大学学报(自然科学版),2012,32(01):0.
[3]陈璟,袁万杰,郝培文,等.微观指标对沥青热稳定性能的影响[J].长安大学学报(自然科学版),2012,32(01):0.
[4]周兴业,刘小滔,王旭东,等.基于轴载谱的沥青路面累计当量轴次换算[J].长安大学学报(自然科学版),2012,32(01):0.
[5]李祖仲,王伯禹,陈拴发,等.轴载对复合式路面应力吸收层荷载应力的影响[J].长安大学学报(自然科学版),2012,32(01):0.
[6]关博文,刘开平,陈拴发,等.水镁石纤维路面混凝土路用性能[J].长安大学学报(自然科学版),2012,32(01):0.
[7]翁效林,王玮,张留俊,等.拓宽路基荷载下管桩复合地基沉降变形模式[J].长安大学学报(自然科学版),2012,32(01):0.
[8]穆柯,王选仓,柳志军,等.基于非饱和渗流原理的路基含水率预估[J].长安大学学报(自然科学版),2012,32(01):0.
[9]李振霞,陈渊召.不同类型半刚性基层材料性能的试验与分析[J].长安大学学报(自然科学版),2012,32(01):0.
[10]马 骉,马 晋,周宇鹏.沥青混合料降温收缩断裂特性[J].长安大学学报(自然科学版),2012,32(03):1.
　MA Biao,MA Jin,ZHOU Yu-peng.Cooling shrinkage fracture characteristic of asphalt mixture[J].Journal of Chang’an University (Natural Science Edition),2012,32(4):1.
[11]黄优,刘朝晖,柳力,等.钢渣-水泥稳定碎石性能及环境影响试验[J].长安大学学报(自然科学版),2021,41(5):43.
　HUANG You,LIU Zhao hui,LIU Li,et al.Experimental study on properties and environmental impacts of steel slagcement stabilized aggregates[J].Journal of Chang’an University (Natural Science Edition),2021,41(4):43.

更新日期/Last Update: 2021-08-12