This study aimed to analyze the outcomes of stress intensity factor (KI) and new bond strength tests oil well cement (class H) with a water-to-cement ratio (w/c) 0.38. Mechanical properties paste, such as compressive flexural strengths, were tested qualified at 1, 7, 28 days curing. The relationship between elastic modulus axial strain using differential Vipulanandan p-q model for paste was obt...

Novel microcarriers consisting of calcium phosphate cement and alginate were prepared for use as three-dimensional scaffolds for the culture and expansion of cells that are effective for bone tissue engineering. The calcium phosphate cement-alginate composite microcarriers were produced by an emulsification of the composite aqueous solutions mixed at varying ratios (calcium phosphate cement pow...

nowadays, wind erosion and dust have become environmental problems, not only in desertareas, but throughout the entire country, which have imposed many costs on the country budget.combating wind erosion in many deserts using adapted plants and oil mulch has 40 years history.but the widespread use of petroleum mulches in addition to environmental problems is noteconomically justified due to the ...

In this paper, the effects of carbonation on pore structure of blended pozzolan cement pastes were investigated. Ordinary Portland cement OPC was partially replaced with ground palm oil fuel ash POA , ground rice husk ash RHA and classified fine fly ash FA . The strength, total porosity, specific surface area, and pore size distribution were tested. In general, incorporation of pozzolans increa...

Cement has been used for decades in the industry to serve various important functions inside oil and gas wells. Due complications variations geological technical conditions of a well, cement compositions are designed utilized different world regions. Many hydrocarbon reservoirs covered by thick salt formations, which considered problematic costly be drilled cemented. slurry, as water based solu...