摘要
红粘土置换式水泥土桩具有独特的优越性而在昆明泥炭及泥炭质土中得以应用,各地红粘土的物质组成和工程特性存很大差异。本文通过室内试验对昆明水泥红粘土强度特性做了初步研究,重点分析了掺入比和龄期对其强度的影响。试验结果显示,随掺入比的提高水泥红粘土强度呈现出先快后慢的二次曲线增长规律;其龄期-强度曲线服从常用对数增长关系,前期强度(7 d、14 d或28 d)与90 d强度的比值随掺入比减小而增大。
Red clay replaced cement-soil pile has its unique advantages in application of peat and peat soil in Kunming, while the material compositions and engineering properties of red clay around the different places exist too much difference. This article conducted preliminary research through indoor test of cement strength properties of red clay in Kunming, and emphatically analyzed the influence of strength versus the mixing ratio and ages. Experimental results show that the strength of red clay cement presents a quadratic curve-law of fast followed by slow; while the curing age-strength curves submit to common logarithm relationship, and the ratio of the early of 7 d, 14 d, 28 d strength and the 90 d strength increases following the decrease of the mixing ratio.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2013年第11期2319-2324,共6页
Bulletin of the Chinese Ceramic Society
基金
国家自然科学基金(51108217)
关键词
置换式水泥土桩
红粘土
强度
掺入比
龄期
replaced cement-soil pile
red clay
strength
mixing ratio
curing age
