The Effect of Using Naphthalene and Local Soil with Concrete Mixture on Thermal Conductivity, Case of Mafraq City - Jordan
The Effect of Using Naphthalene and Local Soil with Concrete Mixture on Thermal Conductivity, Case of Mafraq City - Jordan
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DOI：
10.12911/22998993/102615
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发表时间：
2019-04
影响因子：
1.3
通讯作者：
Hussain H. Alzoubi;Duha J. Al-Olaimat
中科院分区：
文献类型：
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作者：
Hussain H. Alzoubi;Duha J. Al-Olaimat
本研究探讨了直接掺入不同比例的萘与土壤到混凝土中使用的马夫拉克-约旦的混凝土混合物的导热系数的影响。该方法涉及测试72个混凝土立方体样本。基本样品仅由水、硅砂和水泥的混合物制备，不含添加剂。在试验样品中分别加入2.5%、5%、7%、10%和15%的当地土壤添加剂和萘。根据大小和尺寸将样品分为两组; 36个5×5×5 cm的立方体仅测试热导率，36个3×3×3 cm的立方体测试抗压强度和热导率。根据混凝土标准，在浇注28天后对所有样品进行测试。结果表明，加入萘和土壤的水泥混合物大大降低了混凝土元件的导热系数。与基本情况样品相比，实现了热导率的合理降低。然而，从结构工程的角度来看，样品的抗压强度保持在可接受的值内。这种混凝土热性能的增强可以应用于建筑系统中，如用于内墙和外墙的混凝土块。
This study explores the effect of direct incorporation of different ratios of naphthalene with soil into the concrete used in Mafraq-Jordan on the thermal conductivity of concrete mixtures. The methodology involved testing 72 concrete cube samples. The basic samples were prepared only from a mixture of water, silica sand, and cement without additives. The additives of local soil and naphthalene of different ratios: 2.5%, 5%, 7%, 10% and 15%, were added to the tested samples. The samples were classified into two groups in terms of size and dimensions; 36 cubes with 5×5×5 cm were tested only for thermal conductivity, and 36 cubes with 3×3×3 cm were tested for compressive strength and thermal conductivity. All samples were tested after 28 days of casting, according to the concrete standards. The results show that adding naphthalene and soil to the cementitious mixtures substantially decreases the thermal conductivity of concrete elements. A reasonable reduction in thermal conductivity was achieved compared with the basic case samples. However, the compressive strength of samples remained within the acceptable values from the stand point of structural engineering. This enhancement in the thermal properties of concrete can be applied in building systems as concrete blocks used in internal and external walls.