Comparative Data on the Mechanical Properties of Portland and Thermally Reactivated Cement

<p>The dataset was created as part of a statistical investigation of the mechanical properties of reactivated cement. It contains documentation on each individual test specimen with regard to composition, age, geometry, and the mechanical properties tested. The parameters that were tested and documented are porosity, compressive strength, fracture toughness, and Vickers hardness.</p>
<b>Methods</b>
<p>The production of each individual test sample was documented. Each test sample was tested at 28 days of age. The compressive strength test was performed on a press (Walter & Bai AG). The Vickers hardness tests were performed on the surface of cubic samples in a penetration tester (Zwick), the porosity was determined according to the Archimedes principle, and the corresponding masses were documented. The fracture toughness was measured using an ARCO-CT device (Advanced Rigid Crack Opening on CT samples, Rödel & Isaia GmbH). The resulting data sets were analyzed in terms of mean value, standard deviation, and according to Weibull statistics.</p>

本数据集为开展活化水泥（reactivated cement）力学特性统计研究而构建，收录了每一块试验试样的成分、养护龄期、几何尺寸以及经测试得到的力学特性相关记录。本次测试并记录的参数包括孔隙率（porosity）、抗压强度（compressive strength）、断裂韧性（fracture toughness）与维氏硬度（Vickers hardness）。

**测试方法**
本数据集对每一块试验试样的制备流程进行了完整记录，所有试样均在养护龄期达到28天时开展性能测试。其中，抗压强度测试在Walter & Bai AG公司的压力试验机上完成；维氏硬度测试通过Zwick公司的压入式硬度计在立方试样表面进行；孔隙率依据阿基米德原理（Archimedes principle）测定，并同步记录了试样的对应质量；断裂韧性则采用ARCO-CT装置（CT试样高级刚性裂纹开口测试装置，Rödel & Isaia GmbH公司出品）进行测量。所得数据集通过均值、标准差进行统计分析，并依据威布尔（Weibull）统计学方法完成后续处理。