混凝土
混凝土
혼응토
CONCRETE
2014年
2期
54-56,60
,共4页
粉煤灰%轻骨料混凝土%硫酸盐腐蚀%浸烘循环
粉煤灰%輕骨料混凝土%硫痠鹽腐蝕%浸烘循環
분매회%경골료혼응토%류산염부식%침홍순배
fly ash%lightweight aggregate concrete%sulphate attack%soaking-drying circulation
进行了硫酸钠溶液腐蚀与浸烘循环的双因素共同作用下轻骨料混凝土耐久性试验，研究结果表明：在腐蚀环境中，轻骨料混凝土性能的总体趋势随时间推移而衰减，溶液浓度与腐蚀的力度成正向关系。在其他条件相同的情况下，随着粉煤灰掺量的增加，混凝土强度耐蚀系数和相对动弹性模量逐渐提高，在粉煤灰掺量为40%时，出现从增至减的转折点。
進行瞭硫痠鈉溶液腐蝕與浸烘循環的雙因素共同作用下輕骨料混凝土耐久性試驗，研究結果錶明：在腐蝕環境中，輕骨料混凝土性能的總體趨勢隨時間推移而衰減，溶液濃度與腐蝕的力度成正嚮關繫。在其他條件相同的情況下，隨著粉煤灰摻量的增加，混凝土彊度耐蝕繫數和相對動彈性模量逐漸提高，在粉煤灰摻量為40%時，齣現從增至減的轉摺點。
진행료류산납용액부식여침홍순배적쌍인소공동작용하경골료혼응토내구성시험，연구결과표명：재부식배경중，경골료혼응토성능적총체추세수시간추이이쇠감，용액농도여부식적력도성정향관계。재기타조건상동적정황하，수착분매회참량적증가，혼응토강도내식계수화상대동탄성모량축점제고，재분매회참량위40%시，출현종증지감적전절점。
Durability experiments of lightweight aggregate concrete under interaction of double factors were conducted ,and the factors were sulphate attack and soaking-drying circulation.The research results showed that the general trend of performances of lightweight aggregate concrete attenuate with time,and there was a positive relationship between the concentration of the sulphate solution and the corrosion degree to the lightweight aggregate concrete.Other being equal,the coefficient of strength resistance corrosion and the relative dynamic elastic modulus of lightweight aggregate concrete improve with the increasing of the amount of fly ash ,and the turning point of the both two properties from increment to reduction occured when the amount of fly ash was 40%.
