碱含量影响钢渣黏土的力学特性试验研究
Journal: Building Technology Research DOI: 10.12238/btr.v7i2.4268
Abstract
目的：研究碱含量变化对钢渣黏土混合土样力学性能变化的影响,探讨钢渣代替水泥在工程中用于软弱土加固的可行性。方法：设计正交实验,将不同配合比的碱加入钢渣黏性土混合料中,养护规定龄期后,进行无侧限抗压试验,对比不同水平下试验结果R值并和水泥固化土对比。结果：一定配合比下的碱激发剂可以使钢渣的水化速度加快,使混合土样的无侧限抗压强度在早期快速增长,在后期相较于单一激发剂作用强度损失少。结论:通过与10%水泥黏土混合料的试验结果比较,一定配合比下的碱激发钢渣黏土混合料的无侧限抗压强度与其相似,在相同养护龄期时,碱激发钢渣可以代替一定掺量的水泥用于地基处理。
Keywords
钢渣；黏土；无侧限抗压；正交实验
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[3] Chen J S,Wei S H.Engineering properties and perform ance of asphalt mixtures incorporating steel slag[J]. Constru ction and Building Materials,2016,128:148-153.
[4] Pasetto M, Baldo N. Mix design and performance analy sis of asphalt concretes with electric arc furnace slag[J]. Construction and Building Materials,2011,25(8):3458-3468.
[5] Sas W, Głuchowski A, Radziemska M, et al. Environmental and geotechnical assessment of the steel slags as a material for road structure[J].Materials,2015,8(8):4857-4875.
[6] Li W, Lang L, Wang D, et al. Investigation on the dynamic shear modulus and damping ratio of steel slag sand mixtures [J].Construction and Building Materials, 2018,162:170-180.
[7] 吴燕开,胡晓士,胡锐,等.烧碱激发钢渣粉在淤泥质土中的试验研究[J].岩土工程学报,2017,39(12):2187-2194.
[8] 胡锐.钢渣粉外掺激发剂改良水泥土力学特性试验研究[D].山东:山东科技大学,2017.
[9] 张浩,王林,龙红明.碱激发剂对钢渣胶凝材料抗压强度的影响[J].过程工程学报,2018,18(2):382-386.
[10] 丁铸,王淑平,张鸣,等.钢渣水硬活性的激发研究[J].山东建材,2008,(4):47-51.
[11] GB/T20491-2017,用于水泥和混凝土中的钢渣粉[S].
[12] GB/T50123-2019,土工试验方法标准[S].
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