Ultra-High Performance Concrete (UHPC) improves the bearing capacity as well durability of structural concrete. This study aims to investigate constituents UHPC in both phases: aggregate and cementitious materials. The proper ratio mixture was chosen based on combining an gradation quartz sand crushed stone. In addition, compressive strength hardened cement paste investigated achieve optimal si...

Sustainability challenges and opportunities With more than one-half of the world’s growing population (now ∼ 7 billion) living in cities, a sustainable physical infrastructure is central to improving and maintaining a high quality of life. Concrete is an important component of this infrastructure, with a current annual per capita consumption of about 2.8 tonnes (t) ( Figure 1 ). Concrete powers...

To fully utilize the siliceous whiskers and improve the mechanical properties of oil-well cement, the cement composites with different additions of siliceous whiskers were prepared, and analyzed by means of scanning electron microscopy (SEM), mechanical testing, X-ray diffraction (XRD), and infrared spectrum analysis. The results showed that the addition of 2% siliceous whiskers could slightly ...

Traditionally soil, stone aggregates, sand, bitumen, cement etc. are used for road construction. Natural materials being exhaustible in nature, its quantity is declining gradually. Also, cost of extracting good quality of natural material is increasing. Concerned about this, the scientists are looking for alternative materials for highway construction, and industrial waste product is one such c...

In recent years, with the rapid development of biomass combustion power generation and heat as main application industry, amount byproduct biological ash is also increasing year by year. How to effectively utilize in a more green, environmental friendly economic way has become research hotspot. view problem that mechanical properties cement stone decreased when conventional latex was used tough...

The production of concretes with a hard hardening rate is not feasible without the use modifying additives. development chemical industry has led to emergence large number additives different properties. Some increase frost and corrosion resistance, strength building materials, while others affect setting concrete water-cement ratio. Of greatest interest joint work in composition cement stone. ...