ASCE 41 Seismic Assessment of FRP-Repaired Concrete Columns | Journal of Composites for Construction

Abstract Current standards establish methods for seismic assessment and objectives for retrofit of existing building structures and provide guidance for fiber-reinforced polymer (FRP)-based seismic retrofit measures for existing reinforced concrete (RC) structures. However, there is no agreed-upon methodology for assessing—and therefore establishing—the efficacy of an FRP retrofit. Similarly, as FRP retrofits are becoming common, there…

Evaluation of Factors Affecting Erodibility Improvement for MICP-Treated Beach Sand | Journal of Geotechnical and Geoenvironmental Engineering

Abstract Microbially induced calcite precipitation (MICP) was used to treat several sandboxes filled with naturally occurring beach sand collected from Atlantic Beach, Florida. A surface-spray/percolation technique was used to treat these sandboxes where a relatively high-concentration bacteria solution and high-concentration calcium chloride/urea solutions were applied directly to the boxes’ surfaces. Several different treatment combinations were…

3D LOTTO RESULT Today, Friday, January 1, 2021

3D LOTTO RESULT January 1, 2021 – The 3D Lotto draws are held today by the Philippine Charity Sweepstakes Office (PCSO) at 2PM, 5PM, and 9PM and here are the results: 2pm: No Draw5pm: No Draw9pm: No Draw See UPDATED results for the following draws: SWERTRES RESULT Today, Friday, January 1, 2021 (updated every 11am,…

Modeling the Influence of Changes in Silica Fume on Concrete Performance | Journal of Materials in Civil Engineering

Abstract An analytical model was developed to describe the influence of silica fume on the mechanical behavior of ultra-high-performance concrete. The model defines a single parameter, tpaste , which estimates the thickness of paste surrounding all inert, unhydrated cement, and unreacted silica fume particles. The model considers adjustments for partially hydrated cement and partially reacted…

Concrete Floor with GFRP-Embedded I-Beams and Stay-in-Place Structural Forms | Journal of Composites for Construction

Abstract This paper introduces a new concrete floor concept comprising embedded glass fiber-reinforced polymer (GFRP) I-beams and GFRP stay-in-place (SIP) structural forms spanning between the lower flanges of the I-beams. The forms are flat plates with T-up ribs. The flexural behavior in the direction transverse to the I-beams, which is more critical because of the…

New partners in intelligent valve design

Replacing the camshaft in an engine with electric actuators for full, precise control over the engine’s breathing, Intelligent Valve Technology (iVT) has the potential to significantly reduce fuel consumption and CO2 for both passenger cars and Heavy-Duty applications. David Kelly, Director, Drive System Design commented: “The European CO2 legislation for new heavy-duty vehicles is particularly…

Effect of Base Geometry on the Resistance of Model Piles in Sand | Journal of Geotechnical and Geoenvironmental Engineering

Abstract Because only limited research has been done on base geometry effects on pile base resistance, design methods used in practice for full-displacement, partial-displacement, and nondisplacement piles in sand do not consider these effects on base resistance calculations. In this paper, the effect of base geometry on pile resistance is studied by performing a series…