试验仪器自检自校规程
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吉黑高速公路北安至黑河段工程建设项目
试验仪器自检自校规程
北黑高速公路建设指挥部中心试验室 制
2010年4月28日目 录
一 环刀校验方法 ············································································· 1
二 比重瓶校验方法·········································································· 3
三 液塑限联合测定仪校验方法 ·························································· 6
四 相对密度仪校验方法 ··································································· 8
五 击实仪校验方法·········································································· 10
六 灌砂法容重测定仪校验方法 ·························································· 12
七 称量盒（铝盒）校验方法 ····························································· 15
八 电热干燥箱校验方法 ··································································· 17
九 针片状规准仪校验方法 ································································ 19
十 压碎指标测定仪校验方法 ····························································· 22
十一 石料压碎值测定仪校验方法 ························································· 24
十二 水泥净浆搅拌机校验方法 ···························································· 26
十三 水泥稠度与凝结时间测定仪校验方法 ············································· 29
十四 水泥胶砂搅拌机校验方法 ·························································· 32
十五 水泥抗压夹具校验方法 ····························································· 35
十六 雷氏夹校验方法 ······································································ 37
十七 水泥标准筛校验方法 ································································ 41
十八 胶砂试验体成型振实台校验方法 ················································· 43
十九 水泥沸煮箱校验方法 ································································ 46
二十 水泥胶砂流动度测定仪校验方法 ················································· 48
二十一 水泥标准养护箱校验方法 ······················································· 50
二十二 水泥试模校验方法 ································································ 52
二十三 混凝土、砂浆搅拌机校验方法 ················································· 54
二十四 混凝土坍落度筒及捣捧校验方法 ·············································· 56
二十五 混凝土及砂浆试模验校验方法 ················································· 58
二十六 气压式含量测定仪校验方法 ···················································· 60
二十七 集料试验筛校验方法 ····························································· 64
二十八 密度筒校验方法 ··································································· 71
二十九 容量瓶校验方法 ··································································· 73
三十 取芯机校验方法 ··································································· 76
三十一 脱模器校验方法 ··································································· 78
三十二 马歇尔试模校验方法 ····························································· 80
三十三 抽提仪校验方法 ··································································· 82 一 环刀校验方法
本方法适用于直径为58mm、62mm、64mm、70mm、79.8mm五种规格环刀的校验。
（一）概述
环刀是按GB/T50123-1999、SL237-1999、JTJ051-93进行粘土密度测定的专用器具。
（二）技术要求
2.1 外观检查无缺口、卷刃和明显变形。
2.2 剪切试样用环刀直径为64.0±0.4mm，高20±0.4mm。
2.3 压缩试样用环刀直径为79.8±0.5mm，高20±0.4mm。
2.4 膨胀试样用环刀直径为58.0±0.4mm，高25±0.4mm。
2.5 渗透试样用环刀直径为62.0±0.4mm，高40±0.4mm。
2.6 含水率、密度测定用环刀直径为70.0±0.4mm，高52±0.4mm。
（三）校验用标准器具
3.1 游标卡尺：最大量程150mm，分度值为0.02mm；
3.2 电子天平：称量200g，感量0.01g。
（四）环境条件
温度：20℃~24℃；相对湿度：≤75℅。
（五）校验方法
5.1 将环刀洗净、烘干、冷却后称其质量，准确至0.01g。
5.2 环刀直径用游标卡尺在环刀平面两个垂直方向上测量，取算术平均值。
5.3 环刀高度用游标卡尺在环刀平面每隔120°方向上测量高度一次，共测三次，取算术平均值。
（六）校验结果处理
校验结果符合技术要求为合格，合格者方可使用。
（七）校验周期
一年。
（八）附录
校验记录表格式。 环 刀 校 验 记 录
仪器管理编号： 校验编号：
出厂编号、型号： 校验日期： 年 月 日
仪器制造厂：_______________________ 环境条件：温度
℃；相对湿度 %
计量器具名称 管理编号 最近检定日期 测量范围 分辨力 备注
环 刀
编 号 校 验 数 据
结 果 直径（mm） 高h（mm） 质量
(g) 体积
cm3 Φ1 Φ2 h1 h2 h3
结 论：
主管： 核验： 校验： 二 比重瓶校验方法
本方法适用于新的或使用中的比重瓶。
（一）概述
比重瓶用于粒径小于5mm的土及其他粉状物料比重（密度）测定。
（二）技术要求
2.1 外观：无裂纹或其它明显变形。
2.2 容积：经测量得出不同温度下的瓶水质量，准确至1mg，两次差值。0.02g
（三）校验用标准工具
3.1 电子天平：称量1100g，感量0.01g。
3.1 温度计：刻度范围0~50℃，精确至1℃。
（四）环境条件
温度：20℃~24℃；相对湿度：≤75%。
（五）校验方法
5.1 外观：目测。
5.2 比重瓶计算校正法：
5.2.1 将比重瓶洗净、烘干，在干燥器内冷却称量m01，准确至0.01g，再次烘干冷却后称量m02。两次差值不大于0.02g，取其算术平均值m0。
5.2.2 将事先煮沸并冷却至室温的纯水注入比重瓶至满，塞上瓶塞，使多余的水沿瓶塞毛细管中溢出，擦干瓶外表面的水，称其瓶、水总质量m11，准确至0.01g，重复上述步骤，取其算术平均值m1，两次差值不得大于0.02g。
5.3 按公式计算m2：
m2=mmmPPTTwwv01021211()[()]
式中：Ｔ１──比重瓶内纯水温度℃
Ｔ２──比重瓶内纯水任意温度℃
ｍ１──温度为Ｔ１时的瓶水总质量
ｍ２──温度为Ｔ２时的瓶水总质量
ｍ０──比重瓶的质量
ＰＷ１──温度Ｔ1时水的密度
ＰＷ２──温度Ｔ2时水的密度
ωＶ──玻璃的膨胀系数，国产瓶可取2.4×10-5/℃
（六）校验结果处理
校验结果符合技术要求为合格，合格者方可使用。
（七）校验周期
一年。
（八）附录
校验记录表格式。
