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砂浆竖向膨胀率测定仪

仪器用于灌浆用膨胀砂浆的竖向膨胀率的测定。根据国标GB 50119-2013 《混凝土外加剂应用设计规范》 本规范适用于普通减水剂、高效减水剂、引气剂、引气减水剂、缓凝剂、缓凝减水剂、缓凝高效减水剂、早强剂、早强减水剂、防冻剂、膨胀剂、泵送剂、防水剂及速凝剂等十四种外加剂在混凝土工程中的应用。 

  • 型号:GB50119

  • 产品参数
  • 型号:GB50119


 

砂浆竖向膨胀率测定仪概述:

仪器用于灌浆用膨胀砂浆的竖向膨胀率的测定。根据国标GB 50119-2013 《混凝土外加剂应用设计规范》 本规范适用于普通减水剂、高效减水剂、引气剂、引气减水剂、缓凝剂、缓凝减水剂、缓凝高效减水剂、早强剂、早强减水剂、防冻剂、膨胀剂、泵送剂、防水剂及速凝剂等十四种外加剂在混凝土工程中的应用。 

I. Overview:
The instrument is used for the determination of the vertical expansion rate of the expanded mortar for grouting. According to the national standard GB 50119-2013 "Concrete admixture application design specification" This specification applies to ordinary water reducing agent, high efficiency water reducing agent, air entraining agent, air entraining water reducing agent, retarder, retarding water reducing agent, retarding Application of fourteen admixtures such as high-efficiency water reducer, early strength agent, early strength water reducer, antifreeze, expansion agent, pumping agent, waterproofing agent and quick-setting agent in concrete engineering.

 

二,砂浆竖向膨胀率测定仪技术参数

★ 测试仪器工具应符合下列规定: 

★千分表:量程0-10mm; 精度:0.001mm;

★玻璃板:长140mm×宽80mm×厚5mm; 

★钢制压块:直径:70mm,厚5mm,质量:150g;

★试模:10mm×10mm×10mm立方体试模,拼装缝应填入黄油,不得漏水;

外形尺寸:430X430X550mm

重量:9kg

Second, technical parameters:
★ Test instrument tools should meet the following requirements:
★ dial gauge: range 0-10mm; accuracy: 0.001mm;
★ Glass plate: length 140mm × width 80mm × thickness 5mm;
★Steel compact: diameter: 70mm, thickness 5mm, mass: 150g;
★ Trial mode: 10mm × 10mm × 10mm cube test, the seam should be filled with butter, no water leakage;
★Dimensions: 430X430X550mm
★ Weight: 9kg

 

三,砂浆竖向膨胀率测定仪安装步骤:

★测量支架的垫板和测量支架横梁应采用螺母紧固,其水平度不应超过0.02;测量支架应水平放置在工作台上,水平度也不应超过0.02;

★试模应放置在钢垫板上,A摇动;

★玻璃板应平放在试模中间位置,其左右两边与试模内侧边留出10mm空隙;

★钢质压块应置于玻璃板中央;

★千分表与测量支架应固定牢靠,但表杆应能自由升降。安装千分表时,应压下表头,宜使表针指到量程的1/2处。

Third, the installation steps:
★ The measuring bracket's backing plate and measuring bracket beam should be fastened with nuts, the level should not exceed 0.02; the measuring bracket should be placed horizontally on the workbench, and the level should not exceed 0.02;
★The test mode should be placed on the steel plate, and A should be shaken;
★The glass plate should be placed flat in the middle of the test mold, leaving 10mm gap between the left and right sides and the inner side of the test mold;
★The steel briquetting should be placed in the center of the glass plate;
★The dial gauge and measuring bracket should be fixed firmly, but the pole should be free to lift. When installing the dial gauge, the head should be pressed, and the needle should be pointed to 1/2 of the range.

 

四,砂浆竖向膨胀率测定仪操作规程

★灌浆料用水量按流动度为250±10nirn 的用水量。

★灌浆料加水搅拌均匀后应立刻灌模,从玻璃板的一侧灌入。当灌到50mm左右高度时,用捣板在试模的每一侧插捣6 次,中间部位也插捣6 次。灌到90mm高度时,和前面相同再做插捣,尽量排出气体。A后一层灌浆料要一次灌至两侧流出灌浆料为止。要尽量减少灌浆料对玻璃板产生的向上冲浮作用。

★玻璃板两侧灌浆料表面,用小刀轻轻抹成斜坡,斜坡的高边与玻璃相平。斜坡的低边与试模内侧顶面相平。抹斜坡的时间不应超过30s。之后30s内,用两层湿棉布覆盖在玻璃板两侧灌浆料表面。

★把钢质压块置于玻璃板中央,再把千分表测量头垂放在钢质压块上,在30s内记录千分表读数h0,为使读数。

★从测定初始读数起,每隔2h 浇水1 次。连续浇水4 次。以后每隔4h 浇水1 次。保湿养护至要求龄期,测定3d、7d 试件高度读数;

Fourth, the operating procedures:
★ The water consumption of the grout is based on the water consumption of 250±10nirn.
★ Fill the mold immediately after mixing the slurry with water, and pour it from one side of the glass plate. When filling to a height of about 50 mm, the raft is inserted 6 times on each side of the test piece, and the middle part is also inserted 6 times. When filling the height of 90mm, do the same as before, and try to discharge the gas. After the layer A, the grout should be poured once to the side to flow the grout. It is necessary to minimize the upward flushing effect of the grout on the glass plate.
★ The surface of the glass plate is filled with slurry, and gently smeared with a knife to form a slope. The high side of the slope is level with the glass. The lower side of the slope is level with the inner top surface of the test mold. The time to wipe the slope should not exceed 30s. Within 30 s, the surface of the slurry was covered on both sides of the glass plate with two layers of wet cotton cloth.
★ Place the steel briquettes in the center of the glass plate, and then place the dial gauge head on the steel briquettes and record the dial gauge reading h0 within 30s to make the reading.
★ Water the water every 2 hours from the initial reading. Watering 4 times in succession. Watering once every 4 hours. Moisturizing and curing to the required age, measuring the height readings of the 3d and 7d specimens;


砂浆竖向膨胀率测定仪

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