论文部分内容阅读
文章通过双掺适量的引气减水剂和超细矿渣,对普通路面水泥混凝土进行耐久性优化设计。试验结果表明,随着矿渣掺量的增加,保证混凝土具备适当工作性和引气量所需的引气减水剂掺量增大,在选定合适的配比后,改性混凝土的抗弯拉强度和变形能力提高,抗冻和抗塑性开裂能力也有明显改善。改性混凝土的力学性能和耐久性能均较普通混凝土有大幅度改善,呈现出向高性能水泥混凝土转化的趋势。
This article optimizes the durability of ordinary pavement concrete by double admixture of air-entraining superplasticizer and ultra-fine slag. The experimental results show that with the increase of slag content, the amount of air-bleed water-reducing admixture required to ensure proper workability and air-entraining capacity of concrete increases. After the proper proportion is selected, the flexural resistance of the modified concrete Strength and deformation capacity increased, antifreeze and resistance to plastic cracking has also been significantly improved. The mechanical properties and durability of modified concrete are significantly improved compared with ordinary concrete, showing a trend of high performance concrete conversion.