一、產(chǎn)品簡介：
混凝土壓力泌水儀測試泵送砼在一定壓力狀態(tài)下的泌水量。用于骨料粒徑不大于40mm的混凝土拌合物壓力泌水測定。并進(jìn)而計(jì)算泌水率比。混凝土壓力泌水儀由液壓千斤頂、壓力表及上蓋活塞、試料筒、底座等組成。具有測值準(zhǔn)確、操作簡便、體積小、重量輕、脫模方便等特點(diǎn)。
Product introduction of SY-2 concrete pressure bleed meter:
The concrete pressure bleed meter measures the bleeding volume of pumped concrete under a certain pressure state. It is used to measure pressure bleeding of concrete mixture with aggregate particle size not larger than 40mm. And then calculate the bleeding ratio. The concrete pressure bleeding instrument is composed of a hydraulic jack, a pressure gauge, an upper cover piston, a sample cylinder, and a base. It has the characteristics of accurate measurement value, easy operation, small size, light weight, and convenient demoulding.
二、技術(shù)參數(shù)：
★壓力表A大量程：6MPa
★A小分度離值：不大于0.1 MPa
★缸體內(nèi)徑：125±0.02mm
★缸體內(nèi)高：200±0.2mm
★工作活塞直徑：125mm
★工作活塞壓強(qiáng)：3.2MPa
★篩網(wǎng)孔徑：0.315mm
★包裝尺寸：52×37×78cm
★凈 重：≈20kg
Second, SY-2 concrete pressure bleeding instrument technical parameters:
★ Large range of pressure gauge A: 6MPa
★ A small division value: not more than 0.1 MPa
★ Cylinder inner diameter: 125 ± 0.02mm
★ Height inside the cylinder: 200 ± 0.2mm
★ Working piston diameter: 125mm
★ Working piston pressure: 3.2MPa
★ Screen mesh aperture: 0.315mm
★ Packing size: 52 × 37 × 78cm
★ Net weight: ≈20kg
三、操作規(guī)程：
★混凝土拌合物應(yīng)分兩層裝入壓力泌水儀的缸體容器內(nèi)
★每層的插搗次數(shù)應(yīng)為20次。搗棒由邊緣向中均勻地插搗
★插搗底層時搗棒應(yīng)貫穿整個深度
★插搗A層時
★搗棒應(yīng)插透本層至下一層的表面
★每一層搗完后用橡皮鍾輕松沿容器外壁打5-10次
★并使拌合物表面低于容器口約30毫米處
★用抹刀將表面抹平
★將容器外表擦干凈
★混凝土壓力泌水儀按規(guī)定安裝完畢后應(yīng)立即給混凝土試樣施加壓力至3.2Mpa。并打泌力閥門同
★時開始計(jì)時
★保持壓力
★泌力的水接入200毫米量筒：加壓至10秒時讀取泌水量V10，14、 加壓至140s時讀取泌水量V140
★脫模：將下底座取走
★上部放在脫模架上
★加壓
Third, the operating procedures of concrete pressure bleeding instrument
★ Concrete mix should be put into the cylinder container of pressure bleeder in two layers
★ The number of plucks per floor should be 20 times. The plunger is inserted evenly from the edge to the center
★ The plunger should penetrate the entire depth when plunging the bottom layer
★ When inserting A layer
★ The tamper should be inserted through the surface of this layer to the next layer
★ After each layer is punched, use the rubber bumper to easily hit the outer wall of the container 5-10 times.
★ Make the surface of the mixture about 30 mm below the mouth of the container
★ Smooth the surface with a spatula
★ Wipe the surface of the container clean
★ The concrete pressure bleeding instrument should be applied with pressure to 3.2Mpa immediately after installation according to the regulations. And hit the secret valve with
★ Time starts
★ keep stress
★ Breathing water is connected to 200mm graduated cylinder: Read the bleeding volume V10 when pressurized to 10 seconds, 14. Read the bleeding volume V140 when pressurized to 140s
★ Demoulding: take off the lower base
★ The upper part is placed on the release frame
★ Pressure
四、故障原因：
混凝土的水灰比越大，水泥凝結(jié)硬化的時間越長，自由水越多，水與水泥分離的時間越長，混凝土越容易泌水；混凝土中外加劑摻量過多，或者緩凝組分摻量過多，會造成新拌混凝土的大量泌水和沉析，大量的自由水泌出混凝土表面，影響水泥的凝結(jié)硬化，混凝土保水性能下降，導(dǎo)致嚴(yán)重泌水。
Fourth, SY-2 concrete pressure bleeding apparatus failure reasons:
The greater the water-cement ratio of concrete, the longer the cement hardens and hardens, the more free water, the longer the water and cement are separated, and the more easily the concrete will bleed; the concrete contains too much admixture, or the retarder components Too much amount will cause a lot of bleeding and sedimentation of the fresh concrete, a lot of free water will leak out of the concrete surface, affect the setting and hardening of the cement, and reduce the water retention performance of the concrete, resulting in serious bleeding.
五、維護(hù)與保養(yǎng)：
★每次試驗(yàn)結(jié)束后，要將儀器用水沖洗并擦干，如長期不用，用將無油漆的零件表面涂油防銹。
★在安裝時，試料筒不得倒置，其下端外側(cè)涂少許潤滑脂，以使其能順利插入底座，并與“0”形圈密封。
★如油泵卻油致使壓力上不去，可將油泵后蓋打開，按下內(nèi)六角螺栓，加入20號機(jī)油，重新裝好即可。
Fifth, the maintenance and maintenance of concrete pressure bleeding instrument:
★ After each test, the instrument should be rinsed with water and wiped dry. If not used for a long time, the surface of the unpainted parts should be oiled to prevent rust.
★ During installation, the sample cylinder must not be upside down, and a small amount of grease is applied to the outside of the lower end so that it can be smoothly inserted into the base and sealed with the "0" ring.
★ If the oil pump does not allow the pressure to go up, open the back cover of the oil pump, press the hexagonal bolt, add the 20th oil, and reinstall it.
