邵成健, 徐永福, 陈兵. 2016: 水胶比对泡沫混凝土力学性能的影响. 工程地质学报, 24(s1): 180-185. DOI: 10.13544/j.cnki.jeg.2016.s1.027
    引用本文: 邵成健, 徐永福, 陈兵. 2016: 水胶比对泡沫混凝土力学性能的影响. 工程地质学报, 24(s1): 180-185. DOI: 10.13544/j.cnki.jeg.2016.s1.027
    SHAO Chengjian, XU Yongfu, CHEN Bing. 2016: EFFECT OF WATER-BINDER RATIO ON THE MECHANICAL PROPERTIES OF FOAMED CONCRETE. JOURNAL OF ENGINEERING GEOLOGY, 24(s1): 180-185. DOI: 10.13544/j.cnki.jeg.2016.s1.027
    Citation: SHAO Chengjian, XU Yongfu, CHEN Bing. 2016: EFFECT OF WATER-BINDER RATIO ON THE MECHANICAL PROPERTIES OF FOAMED CONCRETE. JOURNAL OF ENGINEERING GEOLOGY, 24(s1): 180-185. DOI: 10.13544/j.cnki.jeg.2016.s1.027

    水胶比对泡沫混凝土力学性能的影响

    EFFECT OF WATER-BINDER RATIO ON THE MECHANICAL PROPERTIES OF FOAMED CONCRETE

    • 摘要: 以水泥、粉煤灰、矿粉为主要原材料,按照质量比16:3:1分别制得了不同水胶比(0.43、0.5、0.6)不同气泡含量的泡沫混凝土。对试样进行单轴压缩试验,得到了泡沫混凝土的应力-应变曲线和峰值应力,试验研究了不同水胶比的泡沫混凝土其应力-应变曲线变化规律、水胶比对抗压强度和弹性模量的影响。结果表明:不同水胶比的泡沫混凝土其应力-应变曲线变化规律基本一致,均经历密实、弹性、屈服、破坏4个阶段。水胶比对低气泡率泡沫混凝土的抗压强度和弹性模量影响较大,而对于高气泡率泡沫混凝土的抗压强度和弹性模量影响较小,且对于不同水胶比的泡沫混凝土,其抗压强度和弹性模量均与气泡率呈指数关系。

       

      Abstract: Cement, fly ash and mineral powder were used as the main raw materials, according to the mass ratio 16:3:1,foamed concrete with different content of bubbles was prepared under different water-binder ratio(0.43, 0.5, 0.6) respectively. The uniaxial compression tests for samples were conducted and obtained the stress-strain curve, peak stress of foamed concrete. The change rules of foamed concrete stress-strain curve with different water-binder ratio, the influence of water-binder ratio on compressive strength and elasticity modulus were experimentally researched. The experimental results indicate that the change rules of stress-strain curve of foamed concrete with different water-binder ratio are basically coincide and all foamed concrete do experience four stages under uniaxial compression: close-grained, elasticity, yield, destroy. Water-binder ratio has a big influence on the compressive strength and elasticity of foamed concrete with low porosity, while has a small effect on foamed concrete with high porosity. Though with different water-binder ratio, the relationships between compressive strength, elasticity and porosity are exponential with porosity.

       

    /

    返回文章
    返回