摘要
为解决沿海地区缺乏填料的问题,将海砂海泥按质量比1.5∶1进行掺合,将混合料作为填筑材料,采用石灰作为固化剂,开展了一系列室内试验,包括无侧限抗压强度试验、直剪试验以及压缩试验。结果表明,固化混合料的无侧限抗压强度随着石灰掺量增加不断提高,掺量5%-7%之间时,强度变化最明显;7 d养护龄期的混合料的强度约为28 d养护龄期的50%左右,强度增长较为缓慢;石灰掺量大于7%之后,其强度增长速率明显减缓,甚至有减小的趋势;石灰掺量低于5%时固化效果不明显,在7%-9%之间时接近低压缩性土。
The sea sand and mud are blended as the mass ratio of 1.5：1 and the mixture are planning to use as a kind of filling material. Using lime as curing agent, a series of laboratory tests were carried out, including uncon- fined compressive strength test, direct shear test and compression test. The results showed that： the unconfined compressive strength of curing mixture increases with the rising content of lime, the strength change most as the lime content between 5% -7% ; The 7 d strength of the mix is about 50% of 28 d and it grows slow; After lime content greater than 7%, the strength of the growth rate has slowed down significantly, and even a decreasing trend; The curing effect is not obvious when the lime content less than 5 %, and it is almost a low compression soil when the lime content are between 7% -9%.
作者
陈庆
张福海
左庆松
袁赛峰
CHEN Qing ZHANG Fu-hai ZUO Qing-song YUAN Sai-feng(Key Laboratory for Geotechnical Engineering of Ministry of Water Resource, P. R. China Research Institute of Geotechnical Engineering, Hohai University, Nanjing 210098, R. P, China)
出处
《科学技术与工程》
北大核心
2016年第31期261-264,共4页
Science Technology and Engineering
