Today, the need to protect environment is a moral obligation for human. The study investigates suitability of using Crumb rubber as replacement Fine aggregates, Waste Crushed tiles Coarse aggregates and Bagasse Cement. results revealed that Compressive strength sample showed satisfactory performance. This experiment mainly deals with manufacture Concrete made from waste materials. concrete cube...

Green concrete is a type of concrete. It sustainable material used for the construction reinforced structures. different compared to normal Nowadays, it plays very good role in subjected low energy consumption and resource consumption. development. Concrete made from replacement substituent ingredients such as cement aggregates. In this waste materials agricultural or industrial wastes are plac...

Distal flow of polymethylmethacrylate (PMMA) bone cement during insertion of the femoral implant results in reduced pressure and cement-bone interdigitation (Markolf, Amstutz, 1976). Insertion of femoral cement plugs in the intramedullary canal to prevent distal flow of PMMA cement in total hip replacement during cementing of femoral prostheses is well accepted and has become current practice (...

Portland cement for high-temperature geothermal applications typically includes 35 to 40 percent crystalline quartz by weight of cement (BWOC) to avoid strength retrogression, which is defined as an increase in permeability and a decrease in compressive strength. Also, because of the reactivity of Portland cement at elevated temperatures, relatively expensive cement-hydration retarders are requ...

We investigate the performance of graphene oxide (GO) in improving mechanical properties of cement composites. A polycarboxylate superplasticizer was used to improve the dispersion of GO flakes in the cement. The mechanical strength of graphene-cement nanocomposites containing 0.1-2 wt% GO and 0.5 wt% superplasticizer was measured and compared with that of cement prepared without GO. We found t...

BACKGROUND Pedicle screws with PMMA cement augmentation have been shown to significantly improve the fixation strength in a severely osteoporotic spine. However, the efficacy of screw fixation for different cement augmentation techniques, namely solid screws with retrograde cement pre-filling versus cannulated screws with cement injection through perforation, remains unknown. This study aimed t...

This paper deals the relationship between compressive strength and internal crack formation (e.g., width volume) of cement-fiber-tailings matrix composites (CFTMC) using an industrial computed tomography system scanning electron microscopy. Two types fibers (polypropylene PP polyacrylonitrile PAN) were used to manufacture CFTMC with a constant cement-to-tailings ratio, solid content curing time...

The eruption of the Cumbre Vieja volcano on 19 September 2021, resulted in deposition large quantities volcanic ash (VA), causing a great impact citizens. This work aims to study properties this as pozzolanic raw materials establish their potential use development sustainable cement. Results chemical and technical characterization are presented. To achieve goal, Ordinary Portland Cement (OPC) w...

In addition to the positive effect of introduction a superplasticizer, there are also negative ones: an increase in period structure formation, significant air entrainment and, as result, decrease strength. One ways reduce impact on and properties concrete composites is method preparing suspension, which consists first dissolving 10% amount cement all mixing water mixer for 1-2 minutes. Then lo...

The construction industry and more particularly cement manufacture are European Green Deal strategic priorities for the circularity of Europe’s demolition waste (CDW) stream with a view to reducing CO2 emissions. is engaged in number strategies that end, one which new low-carbon, lower clinker/cement ratio cements by replacing portland clinker inorganic fractions CDW featuring hydraulic or pozz...