Research on modification of wear resistant materials for inner lining structure of reinforced concrete coal silos
To solve the problem of cracks and"white spots"in the wear-resistant layer of the reinforced concrete coal silo lining structure after reinforcement,based on the research project on the service performance of the wear-resistant layer of the reinforced concrete coal silo lining in Huanghua Port,by incorporating silane based powder,water absorbing resin(SAP),and nano silica fume into existing wear-resistant materials,hydrophobic and maintenance free effects can be achieved by adjusting the dosage.The results were as follows,the 28 d compressive strength was 67.3 MPa when the optimal dosage of silane based powder was 0.3%,and the strength was 68.9 MPa when the optimal dosage of SAP was 0.2%+2.0%nano silica fume.It can be obtained by compounding silane based powder and SAP+nano silica fume,with 0.2%silane based powder+0.2%SAP+2.0%nano silica fume.The compressive strength,table jumping flowability,wear resistance,impact resistance,crack resistance,and permeability are all excellent.The microstructure hydration crystal phase arrangement has the highest density and the highest number of crystal phases in the pores.