海砂冲洗新工艺研究与应用  

Research and applications of a new sand wash technology

作　　者：孙炳全[1,2] 王立久[1] 陈超核[2] 王宏[2] 

机构地区：[1]大连理工大学土木水利学院,辽宁大连116000 [2]海南大学材料与化工学院,海南海口570228

出　　处：《混凝土》2011年第3期105-107,共3页Concrete

基　　金：国家自然科学基金资助项目(50868004);海南省自然科学基金资助项目(808128)

摘　　要：采用两级(或以上)双隔膜电渗析和隔膜电解相配合的方法淡化海水,生成符合冲洗海砂要求的工业淡水。所得淡化海水属于碱性电位水,有较高的pH值,可以提高清洗效果。采用堆砂冲洗法,用充足的淡化海水(碱性电位水)冲洗海砂,提高了冲洗效果,达到节约河砂与淡水的目的。冲洗后的海砂含有一定的OH-离子,有利于减小海砂混凝土液相中Cl-/OH-的比值,可进一步抑制Cl-离子侵蚀,提高海砂混凝土耐久性。With two （or more）dual diaphragm membrane electrodialysis and electrolytic desalination matching method to generate consistent with the requirements of industrial sand washing water.Income potential of seawater desalination is alkaline water, have a higher pH, can improve the cleaning effect,Of sand washing method used,with plenty of desalinated water （alkaline potential of water）washed sand to improve the wash- ing effect,to save the purpose of river sand and fresh water.After washing the sand contains a certain degree of OH- ions,which is conducive to reduce the ratio of liquid Cl-/OH-and can further inhibit the Cl ion erosion, which would improve the durability of concrete.

关 键 词：电渗析 隔膜电解槽 碱性电位水 海水淡化 海砂冲洗 

分 类 号：TU528.06[建筑科学—建筑技术科学]