Articles
3 Reasons Why Leading with Fear is a Terrible Idea
In the early 16th century, Niccolo Machiavelli famously wrote, “It is better to be feared than loved if you cannot be both. If we look at modern-day leaders, this seems to corroborate Machiavelli’s observation. Fear can be an effective mobilization tool in the...
Temperature Increase of Ultra-High Performance Concrete under Fatigue Loading
Abstract Leaner, more filigree, and resource-saving constructions are the development goal of the in the building industry. In reinforced concrete construction, a ultra-high strength concrete was developed to achieve these goals. Due to its use and requirements, this...
Potential of Calcined Mixed-Layer Clays as Pozzolans in Concrete
Abstract Calcined clays have become increasingly attractive as supplementary cementitious materials (SCMs). This paper begins with describing the mineralogical diversity of clays and presents the advantages of naturally occurring mixed-layer clays. It illustrates the...
Using Particle Characterization to Study Fly Ash Dissolution and Leaching in Water and KOH Solution
Abstract This paper presents the results of the physical and chemical changes of Class F fly ashes exposed to either deionized water or to a 0.4 mol/L KOH solution for 15 or 45 minutes. The changes in physical and chemical makeup of thousands of individual particles...
Edge Punching Shear of Waffle Slab with Moment Transfer Perpendicular to Slab’s Free Edge
Abstract This paper presents test results of six one-tenth-scale micro-concrete waffle slabs subjected to edge punching shear in the presence of moment transfer perpendicular to the slab’s free edge. Although the observed punching failure mechanism of a waffle slab...
Continuous Reinforceoncrete d CBeams with Various Carbon FRP under Soil Settlement
Abstract This paper presents the behavior of two-span continuous reinforced concrete beams strengthened with carbon-fiber reinforced polymer (CFRP) composites subjected to differential settlement. Two types of strengthening schemes are employed (externally bonded [EB]...
Cyclic Crack-Slip Model for Smeared Rotating Crack Formulations
Abstract An analytical model describing crack-slip behavior, compatible with smeared crack models and suited for the finite element analysis of reinforced concrete specimens subjected to reversed cyclic loading conditions, is presented. The procedure, largely based on...