碱（Na_2O）对道路水泥的煅烧及性能的影响

道路水泥具有较好的耐磨、抗干缩、抗硫酸盐侵蚀和早期强度较高等性能，是一种优越的多功能胶凝材料。本文应用化学分析方法、力学强度测试、干缩率及耐磨性测试等手段，研究了碱（Ｎａ２Ｏ）对道路水泥的煅烧及性能的影响。试验表明：适量的碱（Ｎａ２Ｏ）可以明显改善道路水泥的易烧性，较大幅度地降低煅烧温度，并能提高早期强度和减小干缩率，但对后期强度和耐磨性有不利影响。

The Effect of Alkali (Na_2O) on the Calcination and Properties of Highway Cement

Highway cement is a high-guality multifunctional cementing material,which is of fine abrasion resistance,dry shrinkage resistance and sulfate resistance as wellas high early strength. By means of chemical analysis and testing of mechanical properties,dry shrinkage and abrasion resistance, the effect of aldali (Na2O) on the calcination and theproperties of highway cement haw been systematically studied , The results show that optimum dosage of alkali(Na2O) can evidently improve the burnability and reduce greatly theburning temperature of highway cement clinker,as well as increse the early strength andreduce dry shrinkage. But the incorporation of alkali (Na2O) is disadvantage to the laterstrength and the abrasion resistance of highway cement.