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为改良上海黏土强度低、易变形的特性,将纤维素纤维和石灰粉以不同的质量加筋率加入到上海黏土中并在不同养护龄期下养护,然后对试样进行无侧限抗压强度试验,来探究纤维素纤维和石灰粉对上海黏土抗压强度的影响。试验结果表明:石灰粉能够有效的提高上海黏土的抗压强度,同时也提高了土体的脆性;纤维素纤维对提高黏土抗压强度效果不明显,但提高了土体的延性;同时掺加纤维素纤维石灰粉时,土的抗压强度显著提高,土的脆性降低,延性增加;抗压强度最适宜的加筋率为0.8%纤维素纤维和10%石灰粉。
In order to improve the low strength and deformation characteristics of Shanghai clay, cellulose fibers and lime powder were added into Shanghai clay at different quality reinforcement rates and cured at different curing ages. Then the unconfined compressive strength Strength test to investigate the influence of cellulose fiber and lime powder on the compressive strength of clay in Shanghai. The results show that limestone can effectively improve the compressive strength of Shanghai clay and also improve the brittleness of soil. The effect of cellulose fiber on compressive strength of clay is not obvious, but the ductility of soil is increased. Cellulose fiber lime powder, the soil compressive strength significantly increased soil brittleness decreased ductility increased; compressive strength of the most appropriate reinforcement rate of 0.8% cellulose fiber and 10% lime powder.