Abstract In most parts of the world urban populations are growing. This inevitably requires resources for construction materials, which is a challenge to achieving global climate goals. Since there no alternative concrete as structural material, novel approaches required use cement in more efficiently and little Portland clinker binder concrete. With approaches, Africa can spearhead green techn...

Waste vitreous enamels from the heating device production process were used for partial replacement of cement in mortar and concrete industry. This waste, due to high content heavy metals, is classified as hazardous waste. At same time, waste possess pozzolanic activity belong class 15 (WEP—generated during devices, premix technology), that 5 (WETM—generated classic technology) materials. The p...

In the present investigation, study of water permeability of concrete was carried out..The strength of concrete is depend on its mix proportions. we used high strength concrete which have its compressive strength is above 50 MPa.in order to measure co-efficient of permeability as per IS:3085-1965,the cylinder with height to diameter ratio equal to one were cast and subjected to a constant press...

Nanosilicas have been known as super-pozzolanic materials and compared to silica fume, these materials have higher purity of silica and finer particles. However, in contrast to silica fume, nanosilicas are produced by various methods, leading to different morphologies and agglomeration statuses in their initial form. On the other hand, due to several mechanisms such as the bridging effect of ca...