摘要
为了更好的将钢渣进行有效利用,研究钢渣替代天然骨料制备钢渣混凝土与普通混凝土的力学性能对比、检验钢渣骨料的碱活性并进一步检验钢渣混凝土的耐水性。试验结果表明:钢渣混凝土的抗压强度总体上在不同水灰比和各养护龄期内均比普通混凝土要高,且钢渣水灰比在0.38时抗压强度最大;两者的抗压强度增长率随着水灰比的减小而减小且在3~7 d、水灰比在0.43时,钢渣混凝土较普通混凝土增幅最快,在7~28 d、水灰比在0.58时,普通混凝土较钢渣混凝土增幅度最快;钢渣经过陈化处理后可以使其碱活性降低,其碱活性整体随着水灰比的减小而减小且水灰比在0.58时碱活性最小;钢渣混凝土具有良好的耐水性,其28 d耐水系数均大于0.85,且水灰比在0.53时耐水性最好。
In order to better will be effective utilization of steel slag,the research of steel slag to replace natural aggregate preparation,the mechanical properties of steel slag concrete and ordinary concrete contrast,inspection of steel slag aggregate alkali activity and further inspection of the steel slag concrete water resistance.Test results show that the compressive strength of steel slag concrete on the whole in different water cement ratio and curing age were higher than normal concrete,steel slag and water cement ratio during 0.38 maximum compressive strength.Both compressive strength growth rate decreases with the decrease of the water cement ratio and in 3 d to 7 d,water cement ratio 0.43,the fastest growth than those of normal concrete,steel slag concrete in 7~28 d,water cement ratio in 0.58,ordinary concrete with steel slag concrete increase amplitude fastest.Steel slag after aging treatment can reduce the alkali activity,the alkali activity overall decreases with the decrease of the water cement ratio and water cement ratio in minimum 0.58 alkali activity.Steel slag concrete has good resistance to water,the water resistant coefficient of 28 d were greater than 0.85,and the water cement ratio during 0.53 water resistance is the best.
出处
《混凝土》
CAS
北大核心
2017年第5期75-78,81,共5页
Concrete
基金
新疆维吾尔自治区2015年自然科学基金项目(2015211A018)
关键词
钢渣
抗压强度
碱-骨料反应
耐水性
steel slag
compressive strength
alkali-aggregate reaction
resistance to water
作者简介
张忠哲（1991-），男，硕士研究生，研究方向：新型建筑材料。联系地址：新疆乌鲁木齐新疆农业大学农大东路311号（830052）联系电话：15276672472
