CAJ | 학술논문

研究了生活垃圾焚烧炉渣(简称炉渣)用作混合材对水泥性能的影响,同时考察了相应制品的环境安全性.结果表明:炉渣不具有放射性,为非活性混合材,其掺入对水泥的安定性、标准稠度用水量及凝结时间影响不大,但随掺量的增加,强度下降;水洗炉渣对强度的影响较小;掺量为7.5%时,能满足P·O42.5水泥的生产要求;炉渣对水泥的外加剂相容性影响不大,能降低干缩率,不会引起钢筋锈蚀;掺15%～40%炉渣时,水泥制品的重金属极限溶出达到Ⅲ类地下水的要求,掺80%时达到Ⅳ类要求;掺15%炉渣时的重金属表面浸渍溶出达到Ⅲ类地下水的要求.说明掺入炉渣作混合材,不会对环境及人类健康带来危害.
연구료생활랄급분소로사(간칭로사)용작혼합재대수니성능적영향,동시고찰료상응제품적배경안전성.결과표명:로사불구유방사성,위비활성혼합재,기참입대수니적안정성、표준주도용수량급응결시간영향불대,단수참량적증가,강도하강;수세로사대강도적영향교소;참량위7.5%시,능만족P·O42.5수니적생산요구;로사대수니적외가제상용성영향불대,능강저간축솔,불회인기강근수식;참15%～40%로사시,수니제품적중금속겁한용출체도Ⅲ류지하수적요구,참80%시체도Ⅳ류요구;참15%로사시적중금속표면침지용출체도Ⅲ류지하수적요구.설명참입로사작혼합재,불회대배경급인류건강대래위해.
The properties of cement with the incineration bottom ash of municipal solid waste as the admixture were investigated, and the environmental safety of the cement product was analyzed. The results show that (1) the bottom ash is an inactive admixture without radioactivity, which has no obvious influence on the cement soundness, the water consumption of standard consistence and the cement setting time;(2) the compressive strength of the cement decreases with the increase of bottom ash dosage;(3) washed bottom ash has a relatively slight influence on the compressive strength;(4) a bottom ash dosage of 7.5% is suitable for the production of P·O42.5 cement;(5) though the bottom ash has no obvious influence on the compatibility with superplasticizer, it reduces the shrinkage rate without arousing a steel corrosion;(6) at a bottom ash dosage of 15%~40% or 80%, the leaching limit of heavy metals in mortar reaches the standard of groundwater type Ⅲ or type Ⅳ, respectively;and (7) at a bottom ash dosage of 15%, the surface leaching of heavy metals in mortar also reaches the standard of groundwater type Ⅲ. It is thus concluded that the addition of bottom ash in cement does not bring about any harm to the environment and human health.