Radon gas has been recognized as one of the health hazards to humans. Building materials used for the construction of houses, which are considered as one of the major sources of this gas in indoor environments. The radon exhalation rate, radon concentration as well as the annual effective dose for 46 samples of building materials (granite, ceramic, marble, mosaic, rocks, gypsum, block and red brick) used in Yemen were measured using two methods. The can technique, containing CR-39 solid-state detector, and active method containing AlphaGuard detector were used. The results obtained from passive and active techniques were found in good agreement. The results showed that the highest values of radon exhalation rate, radon concentration and the annual effective dose indoor and outdoor were 0.93 ± 0.020 Bqm⁻² h⁻¹, 186.48 ± 3.73 Bqm⁻³, 4.7 ± 0.141 and 1.76 ± 0.053 mSvy⁻¹ for granite samples, whereas the lowest values were 0.0076 ± 0.001 Bqm⁻² h⁻¹, 1.51 ± 0.03 Bqm⁻³, 0.04 ± 0.001 and 0.01 ± 0.001 mSvy⁻¹ for the ceramic samples. The results also showed that the radon exhalation rate, as well as the annual effective dose, was found below the world average values of 57.600 Bq m⁻² h⁻¹, 1100 μSv y⁻¹ with exception of some samples. The values of radon concentrations for granite samples were in the range of activity levels from 200 to 600 Bq m⁻³ recommended by (ICRP, 1994).

氡气已被公认为对人类的健康危害之一。用于建造房屋的建筑材料，被认为是室内环境中这种气体的主要来源之一。使用两种方法测量了也门使用的 46 种建筑材料样品（花岗岩、陶瓷、大理石、马赛克、岩石、石膏、砌块和红砖）的氡呼出率、氡浓度和年有效剂量。使用了包含 CR-39 固态探测器的罐技术和包含 AlphaGuard 探测器的主动方法。发现从被动和主动技术获得的结果非常一致。结果表明，室内外氡呼出率、氡浓度和年有效剂量的最高值为0.93±0.020 Bqm ^-2  h^-1，186.48±3.73 BQM ^-3，4.7±0.141和1.76±0.053 mSvy ^-1花岗岩样本，而最低值分别为0.0076±0.001 BQM ^-2  ħ ^-1，1.51±0.03 BQM ^-3，0.04±0.001和对于陶瓷样品，0.01 ± 0.001 mSvy ^-1。结果还表明，氡呼出率以及年有效剂量低于世界平均值 57.600 Bq m ^-2  h ^-1和 1100 μSv y ^-1，但一些样品除外。花岗岩样品的氡浓度值在（ICRP，1994 年）推荐的200 到 600 Bq m ^-3的活性水平范围内。