Cement paste fluidity test device with high precision and high sensitivity and test method

一种高精度与高灵敏度水泥浆体流动性测试装置及测试方法

Abstract

The invention relates to a cement paste fluidity test device and a test method. The device consists of an iron stand, an H pipe, a pipe plug and a measuring cylinder, wherein the H pipe is fixed on a fixture of the iron stand; a paste outlet of the H pipe is sealed by the pipe plug; and the measuring cylinder is arranged below the paste outlet of the H pipe so that the central axis of the H pipe is superposed with the central axis of the measuring cylinder. The test method comprises the following steps of: 1) weighing the cement, weighing water and additives according to the experiment mix proportion, and stirring the neat cement paste; 2) testing the paste fluidity of the neat cement paste; 3) selecting the H pipe according to the paste fluidity of the neat cement paste, sealing the paste outlet with the pipe plug, and fixing the H pipe on the iron stand; and 4) quickly filling the H pipe with the neat cement paste, and removing the pipe plug while starting the timing to record the flowing time of 50 mL and 100 mL of the paste. Through the test method provided by the invention, the paste fluidity change caused by various reasons can be accurately measured; and the method has high sensitivity and wide test range, and is easy to operate and susceptible to few influence factors.
本发明涉及一种水泥浆体流动性测试装置及测试方法,由铁架台、H管、管塞和量筒组成,H管被固定在铁架台的夹具上,H管的出浆口由管塞密封,量筒置于H管的出浆口下方,使H管中轴线与量筒中轴线重合,其测试方法包括有以下步骤:1)称取水泥,按试验配合比称取用水量和外加剂量,进行水泥净浆的搅拌;2)测试水泥净浆的浆体流动度;3)根据水泥净浆的浆体流动度,选取H管,用管塞密封出浆口,并将H管固定于铁架台上;4)将水泥净浆迅速填满H管,移去管塞的同时开始计时,通过记录浆体流下50mL和100mL所用时间。本发明所述的测试方法,可对各种原因引起的浆体流动性变化精确测量,灵敏度高、测试范围广、操作简单、影响因素少。

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