Rice Husk Ash (RHA) is natural Pozzolan containing reactive silica and/or aluminum. When the material is mixed with lime in powdered form and in the presence of water, it will set and harden like cement. This work uses Osadebe’s optimization model to optimize the shear modulus of concrete made from RHA. The strengths predicted by the model are in good agreement with their corresponding experime...

Incinerated waste fly ash is a toxic solid, which can cause serious harm to the environment. CO2-cured incinerated may be useful in decreasing toxicity of and improving corresponding mechanical properties cement-based material with ash. Meanwhile, this technology play certain role reducing content CO2 atmosphere. In study, influence on rheological parameters (the slump flow plastic viscosity) s...

A new single fiber pullout testing method was applied to characterize the interfacial bond performance, which includes load-slip relationship, energy, strength, and utilization ratio, of steel fiber-matrix in reactive powder concrete (RPC). The properties strengthening mechanism were investigated from perspective certain parameters, including type, embedment angle, silica fume content, magnetic...