活性炭储能骨料对相变混凝土压拉强度和导热性能影响的试验与分析

为了制备具有保温储热能力,同时具有一定强度的新型混凝土材料,对不同活性炭储能骨料掺量的相变混凝土进行了抗压强度、劈裂抗拉强度和导热系数试验,并对试验结果进行了分析。试验结果表明,掺入活性炭储能骨料降低了相变混凝土的抗压、劈裂抗拉强度,活性炭储能骨料掺量在15%以内,相变混凝土的强度损失率不超过10%。相变材料为液态时相变混凝土的导热系数略大于相变材料为固态时的导热系数,增加幅度低于5%。随着活性炭储能骨料掺量的增加,相变混凝土的导热系数增大明显,满足保温要求,活性炭储能骨料的掺量应在15%以内。

Experiment and Analysis on Compressive and Tensile Strength and Thermal Conductivity of Phase Change Concrete with Active Carbon Energy Storage Aggregate

In order to manufacture a new type of concrete material with both good heat preservation and storage capacity and certain strength, compressive strength test, splitting tensile strength test and thermal conductivity test have been carried out for phase change concrete with different contents of active carbon energy storage aggregate, and test results have also been analyzed. Test results show that both compressive strength and splitting tensile strength of phase change concrete are reduced after adding active carbon energy storage aggregate. When content of active carbon energy storage aggregate is within 15%, the lost rate of strength for phase change concrete is less than 10%. When phase change materials are in liquid state, thermal conductivity of phase change concrete is slightly larger than that in solid state, and the increase rate of thermal conductivity is less than 5%. Thermal conductivity of phase change concrete increases with content of active carbon energy storage aggregate increase. In order to meet the requirements of heat preservation, content of active carbon energy storage aggregate should be controlled within 15%.