SUMMARY Roller compacted hydrophilic polymer combinations were used to formulate verapamil hydrochloride (HCl) extended release hydrophilic matrix tablets. The effect of roller compaction (RC) parameters on the properties of blended polymers, tablets and drug release were investigated. RC granulation improved the powder properties without affecting the pharmacotechnical properties or the drug r...

The Nam Ngiep 1 (NNP1) Hydropower Project in Lao PDR has constructed a 167 m-high roller compacted concrete (RCC) dam. Class C fly ash (FA) procured from the Mae Moh coal-fired power plant Thailand been selected as supplemental cementitious material for NNP1 RCC dam, to control hydration heat generation and improve workability. Though rarely used globally RCC, it was found that FA acceptable be...

Many concrete dams seriously suffer from long-term seepage dissolution, and the induced mechanical property deterioration of may significantly affect structural performance, especially seismic safety. An approach is presented in this paper to quantify influence dissolution on performance dams. To connect laboratory test with numerical simulation, tests are conducted for specimens using cumulati...