葡萄糖酸钠对混凝土强度的影响  

Influence of glucose-acid Na to the strength of concrete

作　　者：李家辉[1] 胡延燕[1] 范海宏[1] 

机构地区：[1]西安建筑科技大学,陕西西安710055

出　　处：《混凝土》2009年第6期67-69,共3页Concrete

基　　金：国家自然科学基金(50872105)

摘　　要：研究葡萄萄糖酸钠对混凝土强度的影响，结果表明：在同水灰比条件下，葡萄糖酸钠掺量较低（O.03％～0.08％）时其对于凝土有明显的辅助塑化效应。且随着掺量的增加逐渐增强。在高性能混凝土中，葡萄糖酸钠与高效减水剂复配，还可提高混凝土的后期强度。葡萄糖酸钠的适宜掺量掺量为水泥用量的O.03％～0.07％。当葡萄糖酸钠掺量超过O.1％后，由于过度缓凝使混凝土强度严重降低。Influence of glucose-acid Na to the strength of concrete was introduced.It indicates that at the same W/C,the dosage of 0.03%~0.07% of cement of glucose-acid Na has plasticize to concrete and then proceeds to accelerate the setting of concrete with the increase of its doses.In addi- tion,in HPC,the promoting of glucose-acid Na added into the superplasticizers can highly improve the strength of concrete.The appropriate dosage is 0.03%~0.07% of cement.When the dosage is more than 0.1%, strength can＇t improve due to grave retarding.

关 键 词：葡萄糖酸钠 强度 混凝土 缓凝 

分 类 号：TU528.042[建筑科学—建筑技术科学]