Through the laboratory experiments, the mechanical properties of sandy gravel are obtained. Then, based on the slump tests, a modified sandy gravel model is developed by PFC (particle flow code of three dimensions), to which relevant microscopic parameters are assigned to numerically simulate the laboratory experiments. The laboratory test results are compared with that of the numerical simulat...

Abstrak
 Beton adalah salah satu material utama pada suatu bangunan atau konstrusi. Dalam penelitian ini hasil dari campuran kulit pohon beringin terhadap beton menghasilkan kuat tekan sebagai berikut : dengan 2% nilai 18.66 MPa , 5% 17.17 MPa, 7% 12.33 10% 12.91 dan 13% 10.43 MPa. Kebutuhan air yang meningkat menggunakan membuat menjadi rendah. Untuk ditambahkan 200 gr di rencanakan 400 a...

Abstract The Spanish economy was the most hit by Great Recession. It suffered a greater decrease in gross domestic product (GDP) (affecting especially internal demand). However, it increase exports (the so-called “miracle”). Particularly, SMEs incorporation into has been spectacular since 2008. Further, this coincided with huge unemployment. Therefore, our main objective is to investigate moder...

Concrete is the most used building material in world, due to its high compressive strength and durability. Those properties are measured assessed fresh hardened states of concrete, with standard methods which time cost consuming. In present study, slump concrete has been predicted using Artificial Neural Network (ANN), constructed different input parameters involving mix design (i.e. coarse &am...

Abstract In order to decrease the fitting deviation between rheometrical measurements and empirical parameters using slump test, this paper proposes a new analytical method evaluate high yield stress of materials (cement pastes).In doing so, an experimental study was performed for measuring characteristics by cylindrical mold with different water binder ratios (w/b) aiming increase stress. Para...

The use of waste rock as an aggregate in mining backfill is environmentally friendly and cost-saving. slurry flow property varies with the change aggregate, binder content, solid concentration, additives. a pipeline governed by its properties, which makes it crucial to study properties their effects. One example fly ash-waste mixed Jinchuan Nickel, China. Tests on slump, slump flow, mortar cons...

The present study focused on developing Alkali Activated Fine Aggregate (AAFA) by palletization method. AAFA was manufactured using Ground Granulated Blast Furnace Slag (GGBS) and alkali activator solution at ambient conditions. Sodium hydroxide of six molarity sodium silicate to ratio 2.5 used. AACA's properties are similar Natural except for flakiness elongation index. water absorption Abrasi...