Abstract In order to study the effects of graphite and carbon fiber on strength conductivity concrete, compressive three types composite concrete with different mixing ratios graphite, glueless rubberized were tested. The results show that 5000 mesh is weakened, but ability reduce resistivity improved, can be stabilized at about 10 Ω·m. performance glue-free in better than fiber. Carbon signifi...

In the rapidly developing modern society, many raw materials, such as crushed limestone and river sand, which are limited, are consumed by the concrete industry. Naturally, the usage of waste materials in concrete have become an interesting research area in recent years, which is used to reduce the negative influence of concrete on the environment. Hence, this paper presents the development of ...

The reuse of construction and demolition waste has become vitally important because the requirements environmental protection sustainable development. vibration mixing process is a new technology novel method that improves performance concrete by optimizing without changing constituents. This study discusses 100% recycled multi-recycled coarse aggregates using investigates fresh hardened proper...

self compacting concrete (scc) specimens with limestone (l) and quartz (q) powders were formulated. the influence of the type of the powder on the properties of fresh and hardened concrete was evaluated. dense packing theories were used for mix design of samples. the equation of fuller and thompson for particle size distribution (psd) of aggregates was modified with considering fine particles a...

In this paper, the effects of fly ash and rice husk on drying shrinkage ceramsite concrete were studied by testing amount corresponding compressive strength at different ages, according to mechanical properties, correlation between strain was further explored. The research shows that can be effectively reduced adding 30% 15% ash, with increase content, also increases gradually. Through fitting ...

The fate of mercury (Hg) in cement processing and products has drawn intense attention due to its contribution to the ambient emission inventory. Feeding Hg-loaded coal fly ash to the cement kiln introduces additional Hg into the kiln's baghouse filter dust (BFD), and the practice of replacing 5% of cement with the Hg-loaded BFD by cement plants has recently raised environmental and occupationa...

The performance of a fire resistant coating for tunnel passive fire protection under successive severe thermal loading is presented. The material falls under the class of potassium based geopolymers (K-geopolymer) and was prepared by mixing ferronickel (FeNi) slag, doped with pure alumina, with a highly alkaline potassium hydroxide aqueous phase. Its performance was assessed by subjecting a con...