中华放射医学与防护杂志
中華放射醫學與防護雜誌
중화방사의학여방호잡지
Chinese Journal of Radiological Medicine and Protection
2015年
11期
851-853,874
,共4页
邓君%翟贺争%宋延超%王拓%安晶刚%刘晓惠%张永贵%苏旭
鄧君%翟賀爭%宋延超%王拓%安晶剛%劉曉惠%張永貴%囌旭
산군%적하쟁%송연초%왕탁%안정강%류효혜%장영귀%소욱
加气混凝土试块%氡射气系数%含水率%温度%相对湿度
加氣混凝土試塊%氡射氣繫數%含水率%溫度%相對濕度
가기혼응토시괴%동사기계수%함수솔%온도%상대습도
Aerated concrete block%Radon emanation coefficient%Moisture content%Temperature%Relative humidity
目的 研究加气混凝土试块氡射气系数随含水率、温度和相对湿度的变化规律.方法 采用连续测氡仪和密闭累积腔体,测量加气混凝土试块在不同含水率(0～60％)、温度(10～40℃)和相对湿度(12％～95％)条件下的氡射气系数;并对测量结果进行回归分析,探讨氡射气系数(ε)与含水率(s)、温度(T)和相对湿度的变化规律.结果 加气混凝土试块的氡射气系数随着其含水率的增加呈对数型增长,ε=0.096·ln(s+2.43) +0.037,R2=0.952;加气混凝土试块的氡射气系数随着其温度的增加丽增加,并呈线性增长关系,ε=0.002 45· T+0.060 1,R2 =0.987;不同相对湿度下,加气混凝土试块的氡射气系数测量结果差异无统计学意义(P＞0.05).结论 含水率、温度变化对加气混凝土试块氡射气系数影响较大,在建材氡放射性危害评价与控制体系中应注意这些因素对加气混凝土试块氡射气系数的影响.
目的 研究加氣混凝土試塊氡射氣繫數隨含水率、溫度和相對濕度的變化規律.方法 採用連續測氡儀和密閉纍積腔體,測量加氣混凝土試塊在不同含水率(0～60％)、溫度(10～40℃)和相對濕度(12％～95％)條件下的氡射氣繫數;併對測量結果進行迴歸分析,探討氡射氣繫數(ε)與含水率(s)、溫度(T)和相對濕度的變化規律.結果 加氣混凝土試塊的氡射氣繫數隨著其含水率的增加呈對數型增長,ε=0.096·ln(s+2.43) +0.037,R2=0.952;加氣混凝土試塊的氡射氣繫數隨著其溫度的增加麗增加,併呈線性增長關繫,ε=0.002 45· T+0.060 1,R2 =0.987;不同相對濕度下,加氣混凝土試塊的氡射氣繫數測量結果差異無統計學意義(P＞0.05).結論 含水率、溫度變化對加氣混凝土試塊氡射氣繫數影響較大,在建材氡放射性危害評價與控製體繫中應註意這些因素對加氣混凝土試塊氡射氣繫數的影響.
목적 연구가기혼응토시괴동사기계수수함수솔、온도화상대습도적변화규률.방법 채용련속측동의화밀폐루적강체,측량가기혼응토시괴재불동함수솔(0～60％)、온도(10～40℃)화상대습도(12％～95％)조건하적동사기계수;병대측량결과진행회귀분석,탐토동사기계수(ε)여함수솔(s)、온도(T)화상대습도적변화규률.결과 가기혼응토시괴적동사기계수수착기함수솔적증가정대수형증장,ε=0.096·ln(s+2.43) +0.037,R2=0.952;가기혼응토시괴적동사기계수수착기온도적증가려증가,병정선성증장관계,ε=0.002 45· T+0.060 1,R2 =0.987;불동상대습도하,가기혼응토시괴적동사기계수측량결과차이무통계학의의(P＞0.05).결론 함수솔、온도변화대가기혼응토시괴동사기계수영향교대,재건재동방사성위해평개여공제체계중응주의저사인소대가기혼응토시괴동사기계수적영향.
Objective To study the variation of radon emanation coefficient of aerated concrete blocks with respect to moisture content, temperature and relative humidity.Methods By using continuous radon measurement instrument and sealed cavity, the radon emanation coefficients were obtained in conditions of different moisture (0-60％), temperature (10-40℃) and humidity (12％-95％).The variation of radon emanation coefficients (ε) with respect to noisture (s) , temperature (T) and hunidity were also studied by regression analysis.Results The study showed a logarithmic increase in radon emanation coefficient with the increased moisture [ε =0.096·ln(s +2.43) +0.03 ,R2 =0.952] , a linear increase with increased temperature (ε =0.002 45 · T + 0.060 1 , R2 =0.987) , and no significant influence on radon emanation coefficient with respect to humidity (P ＞ 0.05).Conclusions Both moisture and temperature affect the radon emanation coefficient to a larger extent.Attention should be paid to both factors in the assessment and control system of radioactive hazard from building materials.
