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针对水工混凝土高耐久性要求,研究了优质粉煤灰、萘系减水剂、松香热聚物类引气剂以及粗集料品质对水工混凝土抗渗性、抗碳化性和抗冻融性的影响。研究表明:粗集料的表观密度、吸水率在超出DL/T5144-2001规范的要求时也能配置出高耐久性水工混凝土;粉煤灰掺量为10%、萘系减水剂掺量为1.0%、松香热聚物类引气剂掺量为0.01%时,低质粗集料混凝土抗渗性、抗碳化性和抗冻融性可满足高耐久性水工混凝土的使用要求。
According to the requirements of high durability of hydraulic concrete, the effects of high-quality fly ash, naphthalene superplasticizer, rosin hot-polymer air-entraining agent and coarse aggregate on impermeability, carbonization resistance and freeze- Sexual effects. The results show that the apparent density and water absorption of coarse aggregate can be configured with high durability hydraulic concrete when exceeding the requirements of DL / T5144-2001 specification. The content of fly ash is 10%, the content of naphthalene superplasticizer When the amount of rosin hot-polymer air-entraining agent is 0.01%, the impermeability, carbonization resistance and freeze-thaw resistance of low-quality coarse aggregate concrete can meet the requirements of high durability hydraulic concrete.