mso-hansi-font-family:"Times New Roman"">一、適用范圍：

mso-hansi-font-family:"Times New Roman"">測定碎石、礫石及破碎礫石中軟弱顆粒含量。按顆粒大小分別加以0.15kN mso-hansi-font-family:"Times New Roman"">、0.25kN "Times New Roman"">、0.34kN "Times New Roman"">之荷載，破裂之顆粒即屬于軟弱顆粒，將其棄去，稱出未破裂顆粒的質量。

mso-hansi-font-family:"Times New Roman"">二、集料軟弱顆粒試驗機技術參數：

1、電源電壓：220V

2、最大載荷：1200N

3、分度值：1N

mso-hansi-font-family:"Times New Roman"">三、試驗方法：

mso-hansi-font-family:"Times New Roman"">稱風干試樣2 "Times New Roman"">㎏(m1)，如顆粒粒徑大于31.5 mso-hansi-font-family:"Times New Roman"">㎜，則稱4 "Times New Roman"">㎏，過篩分成4.75 "Times New Roman"">㎜～9.5㎜，9.5 mso-hansi-font-family:"Times New Roman"">㎜～16 "Times New Roman"">㎜、16㎜以上各1 mso-hansi-font-family:"Times New Roman"">份；將每份中每一個顆粒大面朝下穩(wěn)定平放在壓力機平臺中心，按顆粒大小分別加以0.15kN mso-hansi-font-family:"Times New Roman"">、0.25kN "Times New Roman"">、0.34kN "Times New Roman"">荷載，破裂之顆粒即屬于軟弱顆粒，將其棄去，稱出未破裂顆粒的質量(m2) "Times New Roman"">。

mso-hansi-font-family:"Times New Roman"">四、集料軟弱顆粒試驗機計算公式：

mso-hansi-font-family:"Times New Roman"">按式(T0320-1) "Times New Roman"">計算軟弱顆粒含量，精確至0.1% "Times New Roman"">。

P= ×100??????????????????????? (T0320-1)

mso-hansi-font-family:"Times New Roman"">式中：P "Times New Roman"">——粗集料的軟弱顆粒含量(%) "Times New Roman"">；??

m1——各粒級顆?？傎|量(g) mso-hansi-font-family:"Times New Roman"">；

m2——試驗后各粒級完好顆?？傎|量(g) mso-hansi-font-family:"Times New Roman"">。

mso-hansi-font-family:"Times New Roman"">五、儀表使用方法：

mso-hansi-font-family:"Times New Roman"">（1 "Times New Roman"">）電源安裝：把電源適配器輸入端插在AC220V "Times New Roman"">（或AC110V "Times New Roman"">）插座上，輸出端插頭插在儀表盒右側插座上，并打開電源開關，是否通電。

mso-hansi-font-family:"Times New Roman"">（2 "Times New Roman"">）開機：打開電源開關，開機時出現(xiàn)開機畫面，并隨即轉為“0.00 "Times New Roman"">”，此時可進行稱重。如開機不為“0.00 "Times New Roman"">”可按“置零”鍵進行清零，待顯示“0.00 "Times New Roman"">”和右下角“”不閃動時進行稱重。

mso-hansi-font-family:"Times New Roman"">（3 "Times New Roman"">）選擇：設有牛頓（KN "Times New Roman"">）和英鎊（1b "Times New Roman"">）兩種重量單位，按下“轉換”鍵，液晶屏右上角“??? ”指向選擇的重量單位。

mso-hansi-font-family:"Times New Roman"">（4 "Times New Roman"">）試驗：液晶屏顯示“0.00 "Times New Roman"">”時可進行試驗。

mso-hansi-font-family:"Times New Roman"">（5 "Times New Roman"">）鎖定：按下“鎖定”鍵可將重量鎖定，此時重量不變化，以便記錄。反復按“鎖定”鍵將在鎖定和釋放間轉換。

mso-hansi-font-family:"Times New Roman"">（6 "Times New Roman"">）超重：稱重超過最大稱量時，將顯示“OF "Times New Roman"">”，并發(fā)出連續(xù)警報聲。出現(xiàn)超重請移去承重面板上的重物，以保護傳感器不致?lián)p壞。

mso-hansi-font-family:"Times New Roman"">（7 "Times New Roman"">）置零：試驗前將裝集料的圓盤放上后，可按“置零”鍵清零后進行壓力試驗。移去試桶后，將顯示負的皮重，可按“置零”鍵恢復零位。

mso-hansi-font-family:"Times New Roman"">（8 "Times New Roman"">）出錯指示：秤顯示“Er "Times New Roman"">”，表示出錯，需重新稱重或對秤進行修理。

mso-hansi-font-family:"Times New Roman"">（9 "Times New Roman"">）關機：關掉電源開關。較長時間不用時，請拔掉電源適配器。