内陆干旱区平原水库防蒸发的EPS轻质混凝土试验研究  

A Light-weighted Concrete Made of EPS to Prevent Reservoir Evaporation in Inland Arid Plain Area

作　　者：宋兴亮[1] 侍克斌[1] 严新军[1] 信玉良[1] 董秀斌[1] 

机构地区：[1]新疆农业大学水利与土木工程学院,乌鲁木齐830052

出　　处：《长江科学院院报》2015年第4期125-128,共4页Journal of Changjiang River Scientific Research Institute

基　　金：新疆科技支撑计划项目(201233132);新疆水利水电工程重点学科基金资助项目(XJZDXK20100212)

摘　　要：内陆干旱区年蒸发量大,通过研制一种干硬后可漂浮于水面的轻质混凝土,后期将其制成板状结构覆盖于水库水体之上,将大大减少平原水库的无效蒸发,以期达到节水目的。EPS(聚苯乙烯泡沫塑料Expanded polystyrene sphere)是一种稳定的、不吸水的、憎水性的、封闭式的超轻颗粒,用以取代混凝土的粗集料和细集料,通过加入适量的粉煤灰、高效引气减水剂和对施工工艺的改良,可改善EPS颗粒与水泥浆体的黏结性,按照试验前事先制定好的要求,可制得表观密度<500 kg/m3、抗折强度>1.5 MPa的EPS轻质混凝土。该混凝土制成板可应用于内陆干旱区平原水库的防蒸发节水技术上。A light-weighted concrete is developed to reduce the invalid evaporation and save water in inland arid plain areas.It could float on water surface after drying and so is made into plate-like structure overlying on the wa-ter surface in reservoir.EPS （expanded polystyrene sphere）is a super-light closed particle which is stable,non-water-absorbent,and hydrophobic.It is used to replace the coarse and fine aggregates in concrete,and by adding an appropriate amount of fly ash,efficient air-entraining water-reducing agent and improving the production tech-nique,the cohesiveness between EPS particles and cement mortar is improved.According to requirements set be-fore the test,the light-weighted concrete with apparent density less than 500 kg/m3 and flexural strength larger than 1.5MPa is produced.Plates made of this light-weighted concrete could be applied to preventing the evaporation in reservoirs in inland arid plain areas.

关 键 词：内陆干旱区 EPS 轻质混凝土 防蒸发 节水 

分 类 号：TV431[水利工程—水工结构工程]