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首页> 外文期刊>Materials and structures >Factors affecting the strength of structural lightweight aggregate concrete with and without fibers in the 1,200-1,600 kg/m(3) density range
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Factors affecting the strength of structural lightweight aggregate concrete with and without fibers in the 1,200-1,600 kg/m(3) density range

机译：影响1,200-1,600 kg / m（3）密度范围内有纤维和无纤维的结构轻质骨料混凝土强度的因素

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摘要

Concrete compressive strength decreases significantly with decreasing density and therefore, there are few examples of structural grade concretes with densities below 1,600 kg/m(3). Here we show the development of structural lightweight aggregate concrete in the 1,200-1,600 kg/m(3) density range. Compressive strengths of up to 36 MPa are obtained at 28 days. By using fibers, mixes with flexural strengths of up to 7 MPa and high ductility in flexure are obtained at 28 days. These results are significantly better than those in existing literature at comparable densities. Compressive strength of lightweight concrete depends on both paste and aggregate properties, while the flexural strength depends mostly on the volume fraction of fibers used.
机译：混凝土的抗压强度随着密度的降低而显着降低，因此，很少有密度低于1600 kg / m 3的结构级混凝土的实例。在这里，我们显示了1,200-1,600 kg / m（3）密度范围内的结构轻质骨料混凝土的发展。在28天时可获得高达36 MPa的抗压强度。通过使用纤维，在28天时可获得抗弯强度高达7 MPa和高延展性的混合物。在可比较的密度下，这些结果明显优于现有文献。轻质混凝土的抗压强度取决于糊状和集料性质，而抗弯强度主要取决于所用纤维的体积分数。

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