For rehabilitation of damaged concrete structures, the durability of repair overlay is a very important issue. Self-compacting concretes (SCC) are known as a suitable repair overlay materials. In this study, the durability of different self-compacting lightweight aggregate concretes (LWSCC) and effect of lightweight aggregate type on them is investigated. 3 mix designs of LWSCC containing three...

Third-party packages have transformed the Python programming language into a powerful computational-biology tool. Package installation is easy for experienced users, but novices sometimes struggle with dependencies and compilers. This presents a barrier that can hinder the otherwise broad adoption of new tools. We present Scoria, a Python package for manipulating three-dimensional molecular dat...

In order to analyze the post-fire seismic performances of scoria aggregate concrete (SAC) beam-column joints precisely and effectively, one finite element model (FEM) was developed simulate behavior SAC joints. The FEM consists two sequential parts: firstly, heat transfer analysis joints, then by combining temperature field distribution obtained from with mechanical properties after fire, both ...

In comparison to regular concrete, scoria concrete is lighter on its own, has a higher strength, performs better during earthquakes, and at insulating heat. It good chance of being used in modern engineering structures, which can successfully reduce the weight load building. This paper substitutes for 20% cement, fly ash 10% recycled aggregate 30% coarse by processing waste that accumulates cit...

In this study, a fuzzy logic prediction model for 3, 7, 14 and 28 days compressive strength of lightweight concrete made with scoria aggregate and fly ash under different curing conditions (standard and air curing) was devised. In mixtures containing fly ash, 15% of Portland cement by weight was replaced with fly ash. The specimens were cured in standard curing conditions at temperature 20±2 °C...

Ž . Long-term erosional modifications of the relatively simple morphology of scoria ‘cinder’ cones are ideally suited for study by field and computer-simulation methods. A series of temporally-distinct cones in the San Francisco and Springerville volcanic fields of Arizona provides the foundation for documenting the degradational evolution of scoria cones in a semi-arid climate. Progressive cha...

The study presents the potential use of Kelud volcano eruptive deposits, Indonesia which includes river sand as fine aggregate, pumice well scoria coarse aggregate green structural lightweight concretes. Their physical properties were experimentally tested and compared with controls that commonly used in region. Furthermore, they applied on concretes designed for five determined compressive str...

Trachybasalt scoria from a cinder cone near the Mexican volcanic front contain phenocrysts of olivine with chromite inclusions, apatite, augite and hornblende, with microphenocrysts of plagioclase. The water-saturated phase relations reproduce the phenocryst assemblage between 1040 C and 970 C with water contents of between 2 5 and 4 5%(50---150MPa).The absence of biotite phenocrysts in the sco...

The pyroclastic aggregate concrete of Trajan's Markets (110 CE), now Museo Fori Imperiali in Rome, has absorbed energy from seismic ground shaking and long-term foundation settlement for nearly two millenia while remaining largely intact at the structural scale. The scientific basis of this exceptional service record is explored through computed tomography of fracture surfaces and synchroton X-...

Scoria aggregate concrete (SAC) as new green material has been gradually used in some construction projects for its lightweight and high strength, which can reduce the environmental impact of materials. In this paper, residual mechanical properties intact compressive stress-strain relationships polypropylene (PP) fiber-reinforced after high-temperature exposure at 20, 200, 400, 600, 800 °C were...