In the field of construction, securing the early strength of concrete (on the first and third days of aging) has been an important problem in deciding the mold release time (i.e., shortening the construction time period). Therefore, the problem of reduced compressive strength in the early aging stage caused by mixing granulated blast furnace slag (GBFS) with concrete must certainly be resolved....

Stabilisation of natural pavement materials to make road pavements is widespread in South Africa, using cement and lime as cementitious binders. The rapid speed of the cementing reaction limits these to plant based construction. Some hydraulic binders have the potential to be developed for Labour Intensive Construction stabilisation technology because their slow hydration reaction allows time t...

Researchers have investigated the feasibility of using ultrafine palm oil fuel ash (u-POFA) as a cement replacement material because its potential to reduce environmental impact concrete production. u-POFA, by-product combustion, is suitable for Portland in mixes sustainability and cost-effectiveness. This study microstructural compressive strengths alkali-activated mortars (AAMs) based on fly ...

In the last decades, gypsum-bearing industrial wastes become one of common globally produced and domestic that are currently recycled further utilized. this study, waste citrogypsum was used as a Ca2+-containing component to modify properties alkali-activated cement (AAC) based on granulated blast-furnace slag (GBFS). Citrogypsum in different AAC mixes activated with three alkaline components: ...

There is great interest in understanding the intrinsic knowledge neural networks have acquired during training. Most work in this direction is focussed on the multi-layer perceptron architecture. The topic of this paper is networks of Gaussian basis functions which are used extensively as learning systems in neural computation. We show that networks of Gaussian basis functions can be generated ...

Abstract The effect of Nano-Al 2 O 3 on the mechanical properties alkali activated Granulated Blast Furnace Slag (GBFS) materials was studied. results showed that addition can significantly increased 28-day compressive strength. strength control slurry without GBFS just from 7.4 MPa to 8.5 (14.86% increase) d 28 curing time, while as dosage 1% 5%, increase varied 39.62% 71.90% after 28d period....

Mutually orthogonal complementary sets (MOCSs) have received significant research attention in recent years due to their wide applications communications and radar. Existing MOCSs which are constructed based on generalized Boolean functions (GBFs) mostly lengths of power-of-two. How construct with non-power-of-two whilst having large set sizes is a largely open problem. With the aid GBFs, this ...

Abstract The study was conducted to investigate the feasibility of sodium aluminate activation nonferrous waste foundry sand. aim solidify sand via geopolymerisation into useful civil engineering materials. Green mixed with make a paste which filled 50 × mm 3 mold. mixture cured in an oven for 5 days. concentration aluminate, granulated blast furnace slag (GBFS) : (WFS) ratio, liquid solid rati...

Alkali-activated binders made from various waste products can appreciably reduce the emission of CO2 and enhance recycling efficiency, thus making them viable substitutes to ordinary Portland cement (OPC)-based binders. Waste materials including fly ash (FA), palm oil fuel (POFA), granulated blast furnace slag (GBFS) reveal favorable effects when applied alkali-activated mortars (AAMs) that are...

Geopolymer concrete (GC) is an emerging alternative construction material due to it being eco-friendly in production with considerably low carbon emissions. Despite material, the structural behavior of GC a rarely studied subject literature. The studies concerning mechanical members made from have established foundations its practical usability. current codes are exclusively for ordinary Portla...