摘要
为探讨粉煤灰对膨胀土膨胀及强度特性的改良效果,对粉煤灰改良膨胀土进行无侧限抗压强度等一系列试验。研究结果表明,掺入粉煤灰能有效抑制膨胀土的膨胀特性;未经养护土样,粉煤灰掺量对其无侧限抗压强度影响不明显,而在7d和28d的养护条件下,随粉煤灰掺量增大,均呈增大趋势;以粉煤灰掺量6%为例,研究龄期为0~180天8个试样的无侧限抗压强度,发现龄期与抗压强度呈良好乘幂关系。
In order to dicuss the effect of fly ash on the expansion and strength characteristics of expansive soil, a series of tests on unconfined compressive strength of fly ash modified expansive soil were carded out. The results show that the incorporation of fly ash can effectively inhibit the swelling characteristics of expansive soils. The effect of fly ash content on unconfined compressive strength is not obvious under the condition of 7 days and 28 days And the content of fly ash increased with the increase of fly ash content. With the addition of 6% of fly ash as an example, the unconfined compressive strength of 8 samples with age of 0-180 days was studied, And it is a good power relationship between age and compressive strength.
出处
《陕西水利》
2017年第6期143-145,156,共4页
Shaanxi Water Resources
关键词
膨胀土
粉煤灰
膨胀率
改良
强度
The expansion soil, fly ash, expansion ratio, to improve and the strength
