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目前这项工作的目的是要说明城市固体废物焚化炉(MSWI)底灰是否可用来生产建筑混凝土的替代骨料.该混凝土28天可达25MPa的抗压强度.用于研究的骨料是用20mm的筛子筛过后,在4mm的筛子上留下来的.它们比天然砾石密度低,吸水性强,强度低.它们被看作是在混凝土中使用的普通质量的骨料.如果直接用于混凝土,由于水泥和金属铝之间的反应,会导致试件的膨胀和裂缝.因此,建议使用烧碱来防止这种反应.这种处理方法可能使其部分取代(直到50%)混凝土中的砾石而不影响耐久性.
The purpose of the current work is to indicate whether MSWI bottom ash can be used to produce alternative aggregates for building concrete. The concrete can withstand compressive strength of 25 MPa for 28 days. The aggregate used for the study is After the 20mm sieve is sifted, it is left on the 4mm sieve. They have lower density than natural gravel, strong water absorption and low strength. They are regarded as ordinary mass aggregates used in concrete. If used directly for concrete Due to the reaction between cement and aluminum metal, it can cause expansion and cracking of the test piece. Therefore, it is recommended to use caustic soda to prevent this reaction. This treatment may make it partially replace (up to 50%) gravel in concrete. Does not affect durability.