自(zi)密實(shi)(shi)混凝土(tu)拌合物穩定性(xing)試筒、自(zi)密實(shi)(shi)混凝土(tu)沉降趨向性(xing)檢(jian)測筒是滄州森眾試驗儀器有限公司依據標準(zhun)《自(zi)密(mi)實混凝(ning)(ning)土應(ying)用(yong)(yong)技(ji)術規程》JGJ/T283-2012要求研發生產的。A.4.1 本方法適用(yong)(yong)于測(ce)(ce)試(shi)新拌(ban)(ban)(ban)自(zi)密(mi)實混凝(ning)(ning)土拌(ban)(ban)(ban)合(he)物穩(wen)定性(xing)。A.4.2 儀器應(ying)符合(he)下(xia)(xia)列要求：1 拌(ban)(ban)(ban)合(he)物穩(wen)定性(xing)檢(jian)測(ce)(ce)筒(tong)(tong)(tong)(tong)由硬質(zhi)、光(guang)滑(hua)、平(ping)整(zheng)的金(jin)屬板(ban)制(zhi)成，檢(jian)測(ce)(ce)筒(tong)(tong)(tong)(tong)內(nei)徑為(wei)115mm，外(wai)徑為(wei)135mm，分(fen)三節(jie)(jie)(jie)，每節(jie)(jie)(jie)高(gao)度均為(wei)100mm，并(bing)用(yong)(yong)活動(dong)扣件固定，見圖(tu)A.4.2。圖(tu)A.4.2 穩(wen)定性(xing)檢(jian)測(ce)(ce)筒(tong)(tong)(tong)(tong)尺(chi)寸2 跳(tiao)桌(振(zhen)幅為(wei)25mm士(shi)2mm)、抹(mo)(mo)(mo)(mo)刀、5mm篩(shai)(shai)子、臺秤、天平(ping)、海綿和(he)料(liao)(liao)(liao)(liao)斗等輔助工具。使(shi)用(yong)(yong)方法：1 首先將自(zi)密(mi)實混凝(ning)(ning)土拌(ban)(ban)(ban)合(he)物用(yong)(yong)料(liao)(liao)(liao)(liao)斗裝(zhuang)入穩(wen)定性(xing)檢(jian)測(ce)(ce)筒(tong)(tong)(tong)(tong)內(nei)，平(ping)至(zhi)料(liao)(liao)(liao)(liao)斗口，垂直(zhi)移走料(liao)(liao)(liao)(liao)斗，靜置l min，用(yong)(yong)抹(mo)(mo)(mo)(mo)刀將多(duo)余(yu)的拌(ban)(ban)(ban)合(he)物除(chu)去并(bing)抹(mo)(mo)(mo)(mo)平(ping)，要輕抹(mo)(mo)(mo)(mo)，不允許壓抹(mo)(mo)(mo)(mo)。2 將穩(wen)定性(xing)檢(jian)測(ce)(ce)筒(tong)(tong)(tong)(tong)放置在跳(tiao)桌上，每秒鐘轉動(dong)一次(ci)搖柄(bing)，使(shi)跳(tiao)桌跳(tiao)動(dong)25次(ci)。3 分(fen)節(jie)(jie)(jie)拆(chai)除(chu)穩(wen)定性(xing)檢(jian)測(ce)(ce)筒(tong)(tong)(tong)(tong)，并(bing)將每節(jie)(jie)(jie)筒(tong)(tong)(tong)(tong)內(nei)拌(ban)(ban)(ban)合(he)物裝(zhuang)人(ren)孔(kong)徑為(wei)5mm的圓孔(kong)篩(shai)(shai)子中(zhong)(zhong)，用(yong)(yong)清(qing)水(shui)沖(chong)洗拌(ban)(ban)(ban)合(he)物，篩(shai)(shai)除(chu)漿體和(he)細(xi)骨(gu)料(liao)(liao)(liao)(liao)，將剩余(yu)的粗(cu)骨(gu)料(liao)(liao)(liao)(liao)用(yong)(yong)海綿拭干表面的水(shui)分(fen)，用(yong)(yong)天平(ping)稱(cheng)其質(zhi)量，精確到(dao)1g，分(fen)別得到(dao)上、中(zhong)(zhong)、下(xia)(xia)三段(duan)(duan)拌(ban)(ban)(ban)合(he)物中(zhong)(zhong)粗(cu)骨(gu)料(liao)(liao)(liao)(liao)的濕重：m1、m2和(he)m3。A.4.4 粗(cu)骨(gu)料(liao)(liao)(liao)(liao)振(zhen)動(dong)離(li)析(xi)率(lv)應(ying)按下(xia)(xia)式計算(suan)：式中(zhong)(zhong)：m——粗(cu)骨(gu)料(liao)(liao)(liao)(liao)振(zhen)動(dong)離(li)析(xi)率(lv)(%)；——三段(duan)(duan)混凝(ning)(ning)土拌(ban)(ban)(ban)合(he)物中(zhong)(zhong)濕骨(gu)料(liao)(liao)(liao)(liao)質(zhi)量的平(ping)均值(g)；m1——上段(duan)(duan)混凝(ning)(ning)土拌(ban)(ban)(ban)合(he)物中(zhong)(zhong)濕骨(gu)料(liao)(liao)(liao)(liao)的質(zhi)量(g)；m3——下(xia)(xia)段(duan)(duan)混凝(ning)(ning)土拌(ban)(ban)(ban)合(he)物中(zhong)(zhong)濕骨(gu)料(liao)(liao)(liao)(liao)的質(zhi)量(g)。北京自密實混凝土拌合物穩定性試驗筒

北京自密實混凝土拌合物穩定性試驗筒