In this study, aggregate pumices are used to produce new construction materials with low density. Pumices are grinded and then classified according to their maximum grain diameter, namely d_max ≤ 5 mm, d_max ≤ 10 mm and d_max ≤ 20 mm. The cement is added into each group as the binder material. The pumice ratios in the specimens are estimated to be 20, 40, 60 and 80% of the total volume. Moreover, pine resin (approximately 1% of cement + pumice mixture) is added to concrete grout to generate artificial pores in each specimen group. The prepared samples are dried during 28 days at room temperature and then the thermo-mechanical measurements are carried out. It was observed that, as the pumice ratio and particle diameter increase, the porosity and water absorption increase, but density, thermal conductivity and compressive strength decrease. Some artificial pores (in addition to pumice pores) are generated in concrete blocks, leading to improvement of insulation properties of the material. The thermal concutivity respectively decreases as 8-15%, 7-12% and 5-13% for the resin-mixed samples with d_max ≤ 5 mm, d_max ≤ 10 mm and d_max ≤ 20 mm. Similarly, the compressive strength values drop 10–13%, 6–10% and 8–12% respectively for each dimeter group.

在这项研究中，骨料粉被用于生产低密度的新型建筑材料。浮石是根据其最大晶粒直径，即研磨，然后分级ð_最大≤5mm时，d_最大≤10mm且d_最大≤20毫米 将水泥作为粘合剂材料添加到每组中。样品中的浮石比例估计为总体积的20％，40％，60％和80％。此外，将松树树脂（约1％的水泥+浮石混合物）添加到混凝土灌浆中，以在每个样本组中生成人造孔隙。制备的样品在室温下干燥28天，然后进行热机械测量。观察到，随着浮石比例和粒径的增加，孔隙率和吸水率增加，但是密度，导热率和抗压强度降低。在混凝土砌块中会产生一些人造孔（除了浮石孔），从而改善了材料的隔热性能。热收缩率分别降低8-15％，d_最大≤5mm时，d_最大≤10mm且d_最大≤20mm左右。同样，每个直径组的抗压强度值分别下降10–13％，6–10％和8–12％。