the present paper offers a meso-scale numerical model to investigate the effects of random distribution of aggregate particles and steel fibers on the elastic modulus of steel fiber reinforced concrete (sfrc). meso-scale model distinctively models coarse aggregate, cementitious mortar, and interfacial transition zone (itz) between aggregate, mortar, and steel fibers with their respective materi...

The reuse of mineral wastes is one of the most suitable solid wastes solutions. Throughout the world, the large of the granular aggregates used in constructions exploit natural mountain resources and rivers. Using mineral waste as a part of concrete, it can be helped to create a green environment and also contribute to sustainable development. Since the copper production process in the Sarchesh...

self-compacting concrete (scc) is a highly fluid yet stable concrete that can flow consistently under its own weight, pass between bars, and fill in formwork without the need of compaction. the application of scc effectively resolves the difficulties of concreting in situations with complicated formwork and congested reinforcements. in this paper, the bond between scc and steel reinforcement wa...

The purpose of this study is to investigate some hardened properties green self-compacting concrete (GSCC) with 15% volumetric replacements crushed clay brick waste as coarse aggregate and reinforced scrap tires recycled steel fibers (STRSF) 0, 0.25, 0.5and 0.75%volume fraction 40 an aspect ratio. Also, a combination two STRSF ratios 60 was used in GSCC hybrid fiber reinforcement (0.25 0.25%, 0...

Concrete has a high degree of fire resistance at moderate temperatures. High temperatures, however, cause concrete to lose its stiffness and strength. The effects cooling techniques retrofitting on the strength exposed temperatures have not been synchronized in previous studies. This experimental research aims evaluate effect conditions effectiveness subjected elevated Four types concrete: M 20...

Brillouin scattering-based distributed optical fiber (OF) sensing technique presents advantages for concrete structure monitoring. However, the existence of spatial resolution greatly decreases strain measurement accuracy especially around cracks. Meanwhile, the brittle feature of OF also hinders its further application. In this paper, the distributed OF sensor was firstly proposed as long-gaug...