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12.725  Articles
1 of 1.273 pages  |  10  records  |  more records»
The hydration of a-pinene has been studied in the presence of Y-zeolite (Si/Al = 2.89) as a solid acid catalyst. The reaction was performed in batch reactor in isopropyl alcohol at various temperature and reaction time with magnetic stirrer. The acid cata... see more

The quest for sustainable alternatives to Portland cement has led to the exploration of a range of materials or their combinations, often with the aim of exploiting synergies in reactions or particle packing to maximize performance. Simultaneous optimizat... see more

The equation of Jander [W. Jander, Z. Anorg. Allg. Chem. (1927) 163: 1-30] is often used to describe the kinetics of dissolution of solid cement grains, as a component of mathematical descriptions of the broader cement hydration process. The Jander equati... see more

The hydration properties of various cementitious materials containing Ground Granulated Blast-furnace Slag (GGBS), two alkali-activated slag cements (AAS-1 and AAS-2) in which sodium silicate and sodium hydroxide act as alkaline activators respectively, s... see more

The role of waste glass powder (GP) during the hydration process of composite cementitious materials was investigated by using mercury intrusion porosimetry (MIP), X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. The compressive ... see more

Penelitian ini bertujuan untuk mengetahui pengaruh temperatur pada reaksi hidrasi ?-pinena menjadi ?-terpineol pada sistem heterogen dengan katalis zeolit alam teraktivasi dan untuk mengetahui besarnya energi aktivasi pada reaksi yang terjadi. Penelitian ... see more

Minyak terpentin dapat dihasilkan dari penyulingan getah pohon pinus (famili Pinaceae). Kandungan utama minyak terpentin adalah senyawa ?-pinena dengan rumus kimia 2,6,6-trimetil, bisiklo [3.1.1]-2-heptena. Harga jual minyak terpentin sangat murah dan saa... see more

The revealing mechanism of side reactions is crucial for obtaining theoretical yield in industrialization when 2,5-bis(methoxymethyl)furan (BMMF) yield is above 95%. By-products catalyzed by the conventional ZSM-5 (C-ZSM-5) and hierarchical porous ZSM-5 (... see more

Metakaolin (MK) is a highly active pozzolanic material and MK is increasingly used in producing high performance concrete. This study presents an integrated hydration-mechanical-durability model for evaluating various properties of metakaolin blended conc... see more

1 of 1.273 pages  |  10  records  |  more records»