橡胶颗粒对再生混凝土抗压强度影响试验研究

Influence Experimental Research of Rubber Particles on Compressive Strength of Recycled Concrete

通过在再生混凝土中加入不同掺量的橡胶颗粒和纳米材料,分析了橡胶颗粒、纳米材料和龄期对再生混凝土的抗压强度影响。试验表明,抗压强度随着再生混凝土中橡胶颗粒的掺量的增加而降低,当再生混凝土中的橡胶颗粒掺量为3%时,混凝土的立方体抗压强度和轴心抗压强度降低量最不明显,分别降低7.73%和6.19%;掺入纳米材料可以较大幅度的提高再生混凝土的抗压强度,尤其可以提高再生混凝土的早期强度;再生混凝土的早期强度增长速度较大,而后期增长效果并不明显。

Through adding different contents of rubber particles and nano-materials into the recycled concrete, the influences of rubber particles, nano-materials and ages on the compressive strength of recycled concrete are analyzed. The results show that the compressive strength of recycled concrete reduces with the increasing of rubber content, and when the rubber content is 3% in the recycled concrete, the cube compressive strength and axial compressive strength of concrete reduce by 7.73% and 6.19% respectively; Nano-materials can significantly increase the compressive strength of recycled concrete, especially for the early strength of recycled concrete, but it’s not obvious effect on the later strength growth of recycled concrete.