关键词: 低温;橡胶混凝土;水胶比;抗压强度;抗拉强度

Abstract: Concrete with 4 rubber proportions were prepared when the water-binder ratio was 0.35, 0.40 and 0.45 respectively.Experimental study was carried out on cube compressive strength and splitting tensile strength under low temperature-30 ℃, ambient temperature 20 ℃ and 0 ℃.The results show the follows: under low temperature conditions, the compressive strength and splitting tensile strength of crumb rubber concrete of different water-binder ratios all increase.However, the strength changes are obviously different.The larger the water-binder ratio is, the more obvious it will be affected by low temperature.When the temperature is 0 ℃, the strength of reference concrete decreases slightly compared with that under ambient temperature.With the increase of rubber proportion, the change of strength transform from reduction to increase.When the low temperature is-30 ℃, the water-binder ratio is 0.35, the mechanical property of crumb rubber concrete is comparatively good.

Key words: low temperature;rubber concrete;water-binder ratio;compressive strength;tensile strength