再生混凝土抗冻耐久性试验研究

Experimental research about the durability of concrete resist freeze

对再生混凝土抗冻耐久性做了基础试验研究,再生混凝土的含再生粗骨料50%,试验通过对再生混凝土试件、添加2%LJ115液体防冻剂再生混凝土试件、普通混凝土试件做冻融循环试验,分析三种试件的失重率和动弹性模量。结果表明掺防冻剂的再生混凝土的抗冻耐久性有了较大提高。

Basic experimental research in frost-resistant durability of recycled concrete was carried out. This test of freezing and thawing cycle were conducted to normal concrete specimens, recycled concrete specimens and include 2%LJ115 liquid anti-freezing mixture recycled concrete specimens respectively by quickly freezing method at（ 20 ± 2） ℃.On the basis of this, to the three kinds of specimens,we analysed the mass loss rate and the dynamic modulus of elasticity.The result indicates that the frost-resistant durability of include antifreeze recycled concrete had improved greatly, little better than the normal concrete.