%0 Journal Article
%T INFLUENCE OF SIMULATED ACID RAIN ON STRENGTH, CRYSTAL AND PORE STRUCTURES OF SAND LIME SLURRY<br>模拟酸雨对砂浆的强度、物相和孔结构影响的研究
%A Xie Shaodong
%A Zhou Ding
%A Yue Qixian
%A Liu Huiling
%A <br>谢绍东
%A 周定
%A 岳奇贤
%A 刘惠玲
%J 环境科学学报
%D 1997
%I 
%X Influence of simulated acid rain of different acidity and SO2+-4 concentration on sand lime slurry was examined by using two erosion accelerating methods (periodical immersion and periodical spraying). It was found that the strength of sand lime slurry reduces by the erosion, and the reduction is a bilinear function of CaO content and the ratio of SO3 to CaO in the eroded test samples. The erosion effect of H+ results in the loss of CaO, MgO, Al2O3 and Fe2O3 in sand lime slurry. The coordinate erosion of H+ and SO2+- 4 causes to increase in the ratio of SO3 to CaO. The main reason for significant decrease in sand lime slurry strength is that the crystal structures such as 408, KAl2Si2O8 and 0.62NaAl2SiO8·0.38CaAl2 transform to CaSO4·2H2O, CaAl2Si2O8, Ca-Fe-Al-S-Si-O, and even more voluminous Ca3Al6O12 ·CaSO4 as the result of erosion, leading to an increase in porosity and bad pore size distribution. Therefore, the main cause of erosion of sand lime slurry by acid rain is dissolving erosion by H+ and expanding erosion by SO2+- 4.
%K acid rain
%K sand
%K lime slurry
%K erosion
%K damage<br>酸雨
%K 砂浆
%K 腐蚀
%K 危害
%K 强度
%K 物相
%K 孔结构
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=9F39D9C2FCF5BD1CD49D4D2E0A0F3CAA&yid=5370399DC954B911&vid=BCA2697F357F2001&iid=CA4FD0336C81A37A&sid=C5154311167311FE&eid=4AD960B5AD2D111A&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=17&reference_num=6