关于加强疫情防控合理有序复工复产促进建材行业高质量发展的指导意见#br#

当前，抗击新冠肺炎疫情正处在关键时期，各地建材企业克服市场需求不足、生产销售与物流受限、人员返岗不足，资金供应短缺等诸多困难，积极采取多种灵活有效的措施，应对当前疫情对行业、企业造成的冲击。为深入贯彻落实习近平总书记关于坚决打赢疫情防控阻击战的重要指示精神和党中央、国务院关于在做好疫情防控工作同时统筹抓好“六稳”工作的有关决策部署，引导建材行业广大企业坚定信心，有效采取各种措施，在切实加强疫情防控工作的前提下，因地制宜，因业、因企施策，根据上下游市场需求变化，全面筹划、合理有序部署好全年的改革发展，有效组织好当前的复工复产，努力推进行业发展和经济稳增长，保障生产经营顺利进行，继续扎实推进行业结构调整和高质量发展，确保全年各项发展任务和经济增长目标顺利实现。现提出如下指导意见

Orthogonal test research of co mbined devel opment and utilization of steel slag and GGBS

The properties of cementitious materials with different steel slag and blast furnace slag ratio were researched. Base on that result, the orthogonal test was designed to add different excitant and changing specific surface area of steel slag powder. The results indicated that compared with the Portland cement, the setting time increased and compressive strength decreased with increasing of steel slag and blast furnace slag ratio. The water requirement for normal consistency had lowest point of 25.8% when the steel slag and blast furnace slag ratio was 3：7. The best designed proposal was that the ratio of steel slag and blast furnace slag was 3：7, the excitation was NS, specific surface area of steel slag was 500m2/kg, the total adding amount of steel slag and blast furnace slag was 40%, on the other hand, 50% admixture was also acceptable, to extend the utilization of steel slag.