The studied samples were cement pas

The studied samples were cement pastes with the additions (0, 5 and 25 mass% of additive in the mass of dry binder). The water/(cement ? additive) ratio was 0.5.Early hydration was studied during first 48 h (external temperature was 25 C) by means of differential BMR calorimeter constructed at the Institute of Physical Chemistry of Polish Academy of Science. The results were calculated using computer software [13]. Thermal analysis and infrared absorption measurements were carried out for
the cement pastes after 2nd and 28th day of hydration.Samples for these measurements were hydrated in sealed bags at temperature 22 C during first 3 weeks and then at 25–30 C. At the appointed time, hydration was stopped by the use of acetone. SDT 2960 Thermoanalyser, produced by TaInstruments (heating rate 10 C/min, mass of sample:9–13 mg, nitrogen atmosphere) and FTIR spectrophotometer Genesis II, produced by Mattson (4000–400 cm-1,sample preparation–pelletizing with KBr) were used.

結果 (英文) 2:

所研究的样品加水泥（0，5和25重量%的添加剂在干粉粘合剂的质量）。水/（水泥？添加剂）比0.5.early水化进行了研究在第一个48小时（外部温度为25  C）的微分BMR量热计在波兰科学院物理化学研究所构建的方法。利用计算机软件[ 13 ]的结果进行计算。热分析和红外吸收测量是
水泥浆体水化第二和第二十八天之后进行的。这些测量样品的水合在密封袋在温度22  C在头3周，然后在25–30  C。届时，水被使用丙酮停止。SDT 2960 thermoanalyser，由tainstruments（加热速度10  C／min，试样量：9–13毫克，氮气氛）和红外分光光度计创世纪II，由马特森（4000–400 cm-1，样品制备–制粒用KBr）。