mso-hansi-font-family:"Times New Roman"">一、孔洞率及孔洞结构吊架产品简介：

mso-hansi-font-family:"Times New Roman"">该吊架是测量砌墙砖孔洞率及孔洞结构的专用吊架，满足《GBT2542-2012砌墙砖试验方法》。

mso-hansi-font-family:"Times New Roman"">二、孔洞率及孔洞结构吊架使用方法：

1、设备

mso-hansi-font-family:"Times New Roman"">（1 "Times New Roman"">）台秤：分度值不应大于5g "Times New Roman"">。

mso-hansi-font-family:"Times New Roman"">（2 "Times New Roman"">）水池或水箱或水桶。

mso-hansi-font-family:"Times New Roman"">（3 "Times New Roman"">）吊架。

mso-hansi-font-family:"Times New Roman"">（4 "Times New Roman"">）砖用卡尺：分度值为0.5mm "Times New Roman"">。.

2、试样数量为5 mso-hansi-font-family:"Times New Roman"">块。

3、试验步骤

mso-hansi-font-family:"Times New Roman"">（1 "Times New Roman"">）按规定方法测量试样的长度L "Times New Roman"">、宽度B、高度H mso-hansi-font-family:"Times New Roman"">尺寸各2 "Times New Roman"">个，分别取其算术平均值，**至1mm "Times New Roman"">。

mso-hansi-font-family:"Times New Roman"">（2 "Times New Roman"">）将试样浸入室温的水中，水面应高出试样20mm "Times New Roman"">以上，24h后将其分别移到水中，称出试样的悬浸质量m1 mso-hansi-font-family:"Times New Roman"">；

mso-hansi-font-family:"Times New Roman"">（3 "Times New Roman"">）称取悬浸质量的方法如下：将秤置于平稳的支座上，在支座的下方与磅秤中线重合处放置水池或水箱或水桶。