摘要
通过试验研究了粉煤灰掺量和硅粉掺量对再生混凝土力学性能的影响,并初步探讨了其影响机理。试验结果表明,随着粉煤灰掺量的增加,再生混凝土抗压、抗拉强度逐渐降低,但对抗折强度影响不大,粉煤灰再生混凝土早期强度增长速率较普通再生混凝土低。硅粉的复合掺入,使再生混凝土抗压强度、抗折强度显著增长,并提高了其早期强度增长速率,但抗拉强度增长较为有限。
The influence on mechanic properties of recycled concrete by the content of silica furna and fly ash is studied.And the mechanism of action is researched at the preliminary step.The results show that, with the increase in the content of fly ash, the compressive strength and tensile strength of recycled concrete gra6ually decrease,but it has little effect on the ftexural strength.Growth rate of early strength of recycled concrete with fly ash is lower than normal recycled concrete.Compound mixed with silica fuma, the compressive strength and folding strength of recycled concrete obviously increased, and its growth rate of early strength has been improved, but the growth of tensile strength is relatively limited.
出处
《混凝土》
CAS
CSCD
北大核心
2011年第12期53-55,共3页
Concrete
基金
国家自然科学基金重大研究计划(90715003)
国家自然科学基金资助项目(10972168)
教育部高等学校博士学科点专项科研基金(200807030002
20096120120005)
陕西省工业攻关项目(2008K07-31)
陕西省重点实验室项目(08JZ35
09JS022)
国家重点实验室开放项目(08KF02)
陕西省教育厅重点实验室访问学者项目(09JS023
09JS024)
中国煤炭地质总局航测遥感局科技创新基金
陕西省社发攻关项目(2010K01-127)
关键词
粉煤灰
硅粉
再生混凝土
强度
fly ash
silica fuma
recycled concrete
strength
