To interpret the provenance 0f Injana Formation, 20 sandstone samples of Formation were collected from Zawita and Dekala areas north Iraq (10 for each sections ), then thin section have been done sildes. The petrographic study showed that sedimentary, metamorphic igneous rock fragments, quartz (mono&polycrystalline) feldspars (microcline, orthoclase plagioclase) make up main grain component...

The suitability of CaCl2 as a mineralizing agent in the synthesis low-temperature C2S-cement clinker from wastes autoclaved aerated concrete was investigated. As chlorellestadite is potential host mineral for immobilization chlorine, formation conditions highest joint content and C2S were studied samples with different sulfate contents. Oven experiments conducted at temperatures between 700 120...

Solidia CementTM is a non-hydraulic cement composed primarily of low-lime containing calcium silicate phases such as wollastonite / pseudowollastonite (CaO·SiO2), and rankinite (3CaO·2SiO2). This contrasts the high-lime alite (3CaO·SiO2), belite (2CaO·SiO2), tricalcium aluminate (3CaO·Al2O3), tetracalcium aluminum ferrite (4CaO·Al2O3·Fe2O3), and gypsum (CaSO4·2H2O) phases that comprise ordinary...

BACKGROUND Although shoulder arthroplasty is an accepted treatment for osteoarthritis, loosening of the glenoid component, which mainly occurs at the bone-cement interface, remains a major concern. Presently, the mechanical effect of the cement mantel thickness on the bone-cement interface is still unclear. METHODS Finite element analysis of a prosthetic scapula was used to evaluate the effec...

Chromium is one of the 25 most widespread elements in the Earth’s crust and occurs as an indelible non-volatile trace element in raw materials used in cement clinker production (clay, limestone and iron additives in particular). Chromium in raw materials mentioned above is mainly in form of trivalent chromium. Naturally occurring chromium (III) is not initially harmful, since it is chemically s...

Calcium leaching from cementitious materials in contact with bentonite nuclear waste repositories can alter the functionality of an engineered barrier system. In this study, we contribute to fundamental understanding calcite precipitation at cement–bentonite interfaces by adding carbonate bentonite. addition, accelerate transport charged reactants towards interface using electrochemical migrati...

Raw (unfired) earth represents a sustainable and efficient alternative to traditional construction materials but its dissemination into building practice has been hindered by relatively high vulnerability water erosion. Enzyme induced carbonate precipitation (EICP) can improve the durability of without using chemical binders such as cement lime. EICP utilises urease enzyme catalyse hydrolysis u...

This paper introduces two early-stage engineering applications inspired by concretion formation, a naturally occurring elemental and molecular concentration process. First, the precipitation of iron oxide from highly acidic wastewater using cement clinker its to channel control were investigated. Blocking channels precipitating around was confirmed column test. Second, production “Calcium carbo...

This study analyses how a Mg-Al-Hydrotalcite with carbonate in the interlayer influences hydration of mortar allowing management lead waste (solid or liquid) cement-based material. First, compatibility hydrotalcite cementitious matrix was studied through heat hydration, workability, consistency, compressive strength and mineralogical phase formation. The changes produced by incorporation were n...

We evaluated the efficacy of a cement gun to improve the depth of cement penetration in total knee arthroplasty. Ninety-one consecutive patients from two hospitals were recruited for this study. For Group I cement was applied to the tibial baseplate and the proximal tibia with fingers. Group 2 had similar application of cement to the tibial baseplate but cement was pressurized into the proximal...