摘要
本文介绍了用于降低室内墙体氡析出率的871防氡涂料的研制,及其在实验室和现场实验的效果。对^(226)Ra含量在752—1341Bqkg^(-1)范围内的碳化砖样品,分别于涂刷871涂料前、后在容积6.65L的容器中密封24h,测得氢气浓度为c_0和c_1,所得防氡(析出)效率η(η=(C_0-C_1)/C_0)达90％左右;连续观察1年半,η可稳定在80％左右。在8间平衡当量氡浓度为158—1295Bqm^(-3)的碳化砖建房中,涂刷871防氡涂料四遍,防氡效率大多高于80％。295防氡涂料还具有色泽好、成膜性强、耐磨、施工方便、价格便宜、原材料广泛等优点,是一种较理想的用于住房的防氡涂料。
This paper presents the development of 871 anti-radon coati-ngfor lowering radon emanation ftom indoor walls,and the results of exper-iments in the laboratories and in houses. Carbonized bricks with ^(226)Racontent ranging from 752 to 1341 Bq/kg were realed in a container witha volume of 6.65L. for bricks withoat coating, the Rn concentrationmeasured in the container was c_0,and for bricks with coating c_1.Theanti-Rn emanation effiency,η[=(c_0-c_1)/c_0],was about 90%,and it hasstabilized at 80%after 1.5 years observation.Observation was made in 8rooms with Rn equilibrium equivalent concentration 158-1295 Bq/m^3,which were built with carbonized bricks,the walls were coated with 871coating for 4 times,the observated η was greater than 80% for mostrooms. In addition,the 871 anti-radon coating has some advantages,such as bright colour,wearresisting,strong film formation capacity,convenience for use and lower cost,and so on.
出处
《辐射防护》
CAS
CSCD
北大核心
1990年第4期248-254,共7页
Radiation Protection
关键词
防氡
涂料
住房
氡
氡子体
Anti-radon Coating
House
Radon
Radon
Daughter
