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上海榮計(jì)達(dá)儀器科技有限公司
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更新時(shí)間：2022-10-07 12:13:14瀏覽次數(shù)：147次
聯(lián)系我時(shí)，請(qǐng)告知來自 環(huán)保在線CBR承載比試驗(yàn)儀
CBR承載比試驗(yàn)儀適用于各種土和混合料（粒徑小于40mm的土）在規(guī)定的試筒模內(nèi)壓實(shí)后進(jìn)行承載比試驗(yàn)，以確定所設(shè)計(jì)的路面、路面基層，底基層，路基材料層的承載能力，儀器由主機(jī)、量力環(huán)及貫入桿、加栽板、百分表、膨脹量測(cè)定裝置等組成。儀器具有體積小，出力大，操作方便等特點(diǎn)。
The CBR load ratio tester is suitable for various soils and mixtures (soils with a particle size of less than 40mm) to carry out the load ratio test after compacting in the specified cylinder mold to determine the designed road surface, pavement base layer, subbase layer, and subgrade The bearing capacity of the material layer, the instrument consists of the host, the force ring and the penetrating rod, the planting plate, the dial indicator, the expansion measuring device and so on. The instrument has the characteristics of small size, large output and easy operation.
CBR承載比試驗(yàn)儀主要參數(shù)：
★速度：1mm/min 大壓力3T
★貫入桿：端面直徑φ50mm。內(nèi)徑φ52mm 長100mm
★多孔板：兩塊
★百分表：0~10mm，三只φ
★載荷板：6塊（外徑φ150mm，內(nèi)徑φ52mm，每塊1.25Kg）.
★試筒：內(nèi)徑φ125mm，高170mm，墊塊φ151mm,高50mm同重型擊實(shí)試驗(yàn)試筒。
★外形尺寸：310X310X930mm
★重量：100kg
CBR load ratio tester main parameters:
★ speed: 1mm / min much pressure 3T
★ penetration rod: end face diameter φ50mm. Long 100mm inside diameter φ52mm
★ Multi-well plate: two pieces
★ Dial indicator: 0 ~ 10mm, three φ
★ Load board: 6 (outer diameter φ150mm, inner diameter φ52mm, each 1.25Kg).
★ Cylinder: inner diameter φ125mm, height 170mm, spacer φ151mm, height 50mm. Same as heavy-duty compaction test cylinder.
★ Dimensions: 310X310X930mm
★ Weight: 100kg
CBR承載比試驗(yàn)儀使用方法:
★打開電源開關(guān)，儀器運(yùn)轉(zhuǎn)，檢查儀器的工作狀況是否正常，檢查手柄進(jìn)出，轉(zhuǎn)動(dòng)是否正常，如一切正?？蓽?zhǔn)備開始試驗(yàn)。
★按《公路路面基層材料試驗(yàn)規(guī)程》JTJ075-85承載比試驗(yàn)方法制取試件。
★測(cè)量飽水膨脹量：
★測(cè)量飽水膨脹量：將經(jīng)過濕氣養(yǎng)生的試件放在裝有調(diào)節(jié)桿的多孔板，在板上加足夠的載荷板，使試件面上的壓力等于該材料層上路面的壓力，
★將試筒與多孔板一起放在水槽內(nèi)（先不放水）并用拉桿將模具拉緊，安裝百分表，讀取初始讀數(shù)。
★向水槽內(nèi)放水，使自由進(jìn)到試件的頂部，在飽水期間，槽內(nèi)水應(yīng)保持在試件的頂面以上25mm，通常試件要泡96小時(shí)，
★在泡水時(shí)間到時(shí)，讀取百分表讀數(shù)，計(jì)算膨脹量。
=泡水后試件高度的變化/原試件高（120mm）×**
★從水槽中取出試樣，倒出試樣上的水，靜置15分鐘讓其排水然后卸去附加載荷和多孔板，底板及濾紙，并承重M，以計(jì)算試件的深度及密度的變化。
★貫入試驗(yàn)：將飽和水試驗(yàn)終了的試件放到試驗(yàn)儀升降盤上，調(diào)整貫入桿與測(cè)力環(huán)對(duì)中，在貫入桿周圍放置預(yù)定數(shù)量的載荷板。
★先將貫入桿用手輪施加45N載荷，然后將測(cè)力環(huán)，測(cè)形變的百分表調(diào)整到零點(diǎn)。
★加荷壓人手輪，記錄測(cè)力百分表某些讀數(shù)（20、40…..）時(shí)的貫入量，并注意貫入量為2.5mm，能有8各以上的讀數(shù)，總貫入量為2.5、50mm時(shí)的承載比：
承載比C=單位壓力/7或10.5×**
Bearing ratio CBR tester using the method:
★ Turn on the power switch, the instrument is running, check whether the instrument is working normally, check whether the handle is in and out, and whether the rotation is normal. If everything is normal, you can prepare to start the test.
Press ★ "Base material testing procedures Pavement" JTJ075-85 carrier ratio test specimens taken methods.
★ Measure the amount of water-swelling:
Saturated ★ measuring the amount of expansion: After the test piece was placed with health moisture adjusting lever perforated plate, the plate plus sufficient load plate, the pressure surface of the test piece is equal to the pressure on the material layer of the road surface,
★ Put the test tube with the perforated plate in the water tank (without water first) and tighten the mold with the pull rod, install the dial indicator, and read the initial reading.
★ Put water into the water tank, so that it can freely enter the top of the test piece. During the saturation period, the water in the tank should be kept 25mm above the top surface of the test piece. Usually, the test piece should be soaked for 96 hours.
★ When the soaking time is up, read the dial indicator and calculate the expansion.
= Change of test piece height after soaking water / original test piece height (120mm) × **
★ Remove the sample from the water tank, pour out the water on the sample, let it stａnd for 15 minutes to allow it to drain, then remove the additional load and the perforated plate, the bottom plate and the filter paper, and load M to calculate the depth and density change of the test piece. .
★ Penetration test: Place the test piece after the saturated water test on the tester lifting plate, adjust the penetrating rod and the force measuring ring, and place a predetermined number of load plates around the penetrating rod.
★ Apply a 45N load to the penetrating lever with the hａnd wheel, and then adjust the force gauge and the deformation indicator to zero.
★ Press the human handwheel, record the penetration of some readings (20, 40… ..) of the dial indicator, and pay attention to the penetration of 2.5mm, which can have more than 8 readings, total penetration Load ratio when the amount is 2.5, 50mm:
Load ratio C = Unit pressure / 7 or 10.5 × **
CBR承載比試驗(yàn)儀保養(yǎng)：
1、每次使用后，應(yīng)立即將儀器擦干凈。
2、使用一年后應(yīng)把變速箱內(nèi)潤滑油脂換上新的潤滑油脂，一會(huì)定期保養(yǎng)。
Bearing ratio CBR Tester Maintenance:
1, after each use, immediately clean the instrument.
2, one year after the gearbox grease should be replaced with a new grease for a regular maintenance.
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