粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2011NO.1 专趣研 粉煤灰混凝土抗酸雨侵蚀的研究* Research on Acid Rain Erosion Resistance of Fly Ash Concrete 陈树东，费治华2 (1.南京航空航天大学土木系，南京210016；2.杭州华浙预制构件有限公司，杭州311256) 摘要：不同粉煤灰擦量(0 20%，40%，60%)高性能混凝土经不同H值(1、2、4)硫酸溶液浸泡后，研究其相对动 弹性模量和质量损失规律.试验表明，随着溶液酸性的增加，混凝土破坏严重；粉煤灰掺量为20%~60%时，混凝土抗酸 性能有所增加；高掺量粉煤灰混凝土在酸性环境中浸泡，当粉煤灰量为60%时，混凝土以相对动弹性模量损失形式遭 到破坏，粉煤灰掺量为0~40%时都是以质量损失形式遭到破坏.粉煤灰混凝土的抗酸性研究对混凝土结构耐久性和 寿命预测具有现实意义. 关键词：粉煤灰混凝土；酸雨；相对动弹性模量；质量损失 中图分类号：TU528 文献标识码：A 文章编号：1005-8249(2011)01-0003-04 Chen Shu-dong' Fei Zhi-hua? (1 Department of Civil Engineering Nanjing University of Aeronautics and Astronautics Nan jing 210016 China 2 Hangzhou Huazhe Prefabrication Component Co;Lad Hangzhou 311256 China) Abstract:The relative dynamic modulus of elasticity and mass loss of high performance conerete with different fly ash proportion(0% 20%. 40% 60%after being soaked in sulfuric acid solution of different pH value(1 2.4)are studied.Experiment results show that the concrete is seriously damaged with the higher strong of acidie solution.The performance of acid resistant increased when the concrete add 20%-60%fly ash. The destructional form of high value fly ash conerete dip in acid solution is relative dynamic modulus of elasticity loss when the concrete add 60% fly ash and the destructional form is mase loss when the concrete add 0-40%fly ash.The research of the acid rain erosion resistance of concrete has redity meaning for the structure durability and life prediction of concrete. Ke...
粉煤灰混凝土抗酸雨侵蚀的研究.pdf
