摘要
针对钢渣的资源化利用问题,进行钢渣替代近海水工混凝土骨料的可行性研究。以宝钢滚筒渣部分替代天然粗、细骨料进行钢渣混凝土配合比设计,通过室内试验研究钢渣混凝土的各项性能,并进行试点工程应用。结果表明:随着钢渣掺入量的提高,混凝土的坍落度逐渐降低,抗压强度、抗渗等级、耐磨度逐步提高,电通量和扩散系数略有增大,抗氯盐侵蚀性能略有下降,能够满足近海水工结构对混凝土的质量要求。试点工程结构表观质量与普通混凝土无异,结构强度达到设计要求,为沿海地区钢渣的消纳与利用提供了一种新途经。
Feasibility study on steel slag substitution for offshore hydraulic concrete aggregates is conducted for the resource utilization of steel slag.The steel slag concrete ratio design is carried out by partially replacing natural coarse and fine aggregates with Baosteel roller slag,and various properties of steel slag concrete are studied through indoor tests and pilot project applications.The results indicate that with the increase of the portion of steel slag,concrete slump decreases gradually,the compressive strength,impermeability grade,and abrasion index increase,the electric flux and diffusion coefficient increase slightly,and the chloride resistance deteriorates slightly,and it can meet the quality requirements for the concrete applied in offshore hydraulic structure.The surface quality of the concrete applied in the pilot project is the same as that of the ordinary concrete,and the structural strength meets the design requirements,which provides a new way for the disposal and utilization of steel slag in coastal areas.
作者
黄东海
杨一琛
夏超群
田鹏
HUANG Dong-hai;YANG Yi-chen;XIA Chao-qun;TIAN Peng(Shanghai Waterway Engineering Design and Consulting Co.,Ltd.,Shanghai 200120,China)
出处
《水运工程》
北大核心
2021年第7期27-31,共5页
Port & Waterway Engineering
关键词
钢渣
混凝土
骨料
配合比
性能
水工结构
steel slag
concrete
aggregate
mix proportion
property
hydraulic structure
