CAJ | 학술논문

针对南水北调工程泵站最常用的C25等级混凝土,按照配合比优化原则,通过原材料筛选,采用掺加优质粉煤灰降低水泥用量、添加高效减水剂降低水胶比、掺优质引气剂提高抗冻性等措施,设计出优化的混凝土配合比.物理力学性能和耐久性试验研究表明,优化配制几组的混凝土性能均能满足设计要求.综合试验结果,提出了泵站C25W6F100混凝土优化配制措施和控制参数,包括水泥和粉煤灰选用、粉煤灰掺量、水胶比、用水量、含气量、高效减水剂和引气剂掺量等.
침대남수북조공정빙참최상용적C25등급혼응토,안조배합비우화원칙,통과원재료사선,채용참가우질분매회강저수니용량、첨가고효감수제강저수효비、참우질인기제제고항동성등조시,설계출우화적혼응토배합비.물리역학성능화내구성시험연구표명,우화배제궤조적혼응토성능균능만족설계요구.종합시험결과,제출료빙참C25W6F100혼응토우화배제조시화공제삼수,포괄수니화분매회선용、분매회참량、수효비、용수량、함기량、고효감수제화인기제참량등.
C25 concrete was widely used in pump station of the south-north water diversion, an optimized mix proportion was designed based on principle of mix proportion optimization, with methods including the screening of raw material, the supplement of fly ash and super plasticizer to reduce the cement content and water-binder ratio and using air entraining agent to improve frost resistance. Experiments of physical and mechani-cal properties and durability showed that,properties of optimized concrete could meet the design requirement Measures of optimization and con-trol parameters on C25W6F100 concrete of pump station are proposed, including the selection of cement and fly ash, the content of fly ash and air entraining agent, water-binder ratio, water consumption, Air Content, super plasticizer and so on.