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羟丙基甲基纤维素HPMC水化延迟特征测试

文字:[大][中][小] 手机页面二维码 2017-11-27     浏览次数:    
羟丙基甲基纤维素HPMC在石灰中测量的热导率的值可以作为检测水化动力学的重要工具,而且能够揭示水化产物如C-H-S和氢氧钙石的成核、生长和沉淀过程。电导分析法能够得到一个全面的关于水化的机制。HPMC高浓度的石灰悬浮液与水泥浆的水化动力学相似。尽管液体与固体的重量比高达20:1,但是石灰的溶解速率就像在水泥浆中一样有成核过程和生长过程控制。水泥水化延迟可由氢氧钙石沉淀的时间决定,变现为电导率的下降,这样,电导率能够决定外加剂对水泥水化延迟的能力。
HPMC水化延迟特性测试
Hydroxypropyl methylcellulose HPMC of lime measured values of the thermal conductivity can be used as an important tool for detecting hydration kinetics, and can reveal the hydration products such as calcium hydroxide and stone CHS nucleation, growth and precipitation . Conductance analysis method to get a comprehensive information regarding the hydration mechanism. HPMC suspension of high concentration of lime slurry with water hydration kinetics similar. Although the liquid and solid ratio of up to 20:1 by weight, but the rate of dissolution of lime as in the slurry as a nucleating and growth process control procedures. Calcium hydroxide cement hydration delayed by stone settling time deciding, realized for the conductivity decreased, so that the conductivity can determine the hydration of cement admixtures delay capabilities.
这次所错实验是在稀释的悬浮液、25℃恒温下且在磁性搅拌下进行的。每一个实验都是一式三份。每个溶液/固体的重量比为20(100ml溶液和5g固体),固体是水泥和纤维素醚的混合物,且在混合器中振动5分钟。在每个样品中,外加剂/水泥的重量比为0.5%~2%。外加剂的量是个重要的数据,而且能够加强水泥水化延迟的现象。液体要么是去离子水(纯水指数mQ)要么是石灰液。
The experiment was performed at the wrong diluted suspension, 25 ℃ constant temperature and a magnetic stirring. Each experiment is a triplicate. Each solution / solid weight ratio of 20 (100ml solid solution and 5g), the solid was a mixture of cement and cellulose ethers, and the vibration in a mixer for 5 minutes. In each sample, the admixture / cement weight ratio of 0.5% to 2%. The amount of admixture is important data, but also to strengthen the cement hydration delay phenomenon. The liquid is either deionized water (pure index mQ) either lime solution.
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