Recently presented at Shotcrete 2015 in Austria, this document details the use of Twisted Steel Micro-Reinforcement (TSMR) for shotcrete applications. Taken from the introduction of the technical paper, "Steel fibers have been used to reinforce shotcrete, replacing traditional steel wire mesh, for over twenty years. They are added to shotcrete to improve energy absorption, crack resistance and provide ductility. All three properties are very important for support systems designed for tunnel and mine conditions. TSMR (Twisted Steel Micro Reinforcement), takes shotcrete reinforcement one step further."
20 Aug, 2014
From the introduction, "In this project, CIES (Centre for Infrastructure Engineering and Safety) at School of Civil and Environmental Engineering (CVEN) of the University of New South Wale (USNW) has collaborated with Helix Steel Australasia Pty Ltd on an investigation of the bending an shear behaviors of circular concrete piles reinforced with Helix TSMR (Twisted Steel Micro Rebar )plus a N16 or N20 bar at the pile center."
1 Jun, 2014
A “microscopic” composite can be created by combining concrete with HELIX™ twisted steel micro reinforcement (herein referred to as micro-reinforcement). As this type of reinforcement is distributed throughout the matrix and is continuously deformed like reinforcing bars, it carries load both before and after the concrete develops a macro-crack. Thus, micro-reinforcement is proactive reinforcement that also acts as reactive reinforcement at higher strain levels.
1 Jun, 2014
Published by The Concrete Society in the United Kingdom, this article provides a description of the fractural mechanisms of micro-reinforced concrete composite, a novel method to measure performance characteristics of the composite and the ISO Guide 65 (1)/IAF-accredited HELIX micro-reinforcement design method for structural concrete. From the article: "A “microscopic” composite can be created by combining concrete with HELIX™ twisted steel micro reinforcement (herein referred to as micro-reinforcement). As this type of reinforcement is distributed throughout the matrix and is continuously deformed like reinforcing bars, it carries load both before and after the concrete develops a macro-crack. Thus, micro-reinforcement is proactive reinforcement that also acts as reactive reinforcement at higher strain levels."
1 Oct, 2013
A “microscopic” composite can be created by combining concrete with HELIX™ twisted steel micro reinforcement (micro reinforcement). Because this type of reinforcement is distributed throughout the matrix and is continuously deformed like reinforcing bars, it carries load both before and after the concrete develops a macro crack. Thus, micro reinforcement is proactive reinforcement that also acts as reactive reinforcement at higher strain levels.
1 Oct, 2013
This article was originally published in ACI's Concrete International, October 2013, Volume 35, No. 10 www.concreteinternational.com HELIX micro reinforcement is produced with a unique twisted profile that allows each piece to bond to the matrix over its full length. In addition, the reinforcement must untwist as it pulls out of the concrete. This makes this product significantly different than traditional steel fibers because pullout is governed by twisting resistance rather than friction. This article provides a description of the fracture mechanisms of micro-reinforced concrete composite, a novel method to measure performance characteristics of the composite, and a design methodology using the proactive and reactive reinforcement properties.
1 Dec, 2012
From the abstract, "This is an experimental investigation focused on the study of the effect of addition of helix fibers in plain concrete to evaluate the compressive strength, tensile strength and the modulus of elasticity when compared to normal concrete."
12 Apr, 2012
Luke Pinkerton, founder and CTO of Helix Steel, discusses existing design methods for concrete reinforcement and introduces a new physics based method. A full article to be published in the coming months.
1 Feb, 2011
Article originally published in ACI Mexico Feb/March 2011 Edition. Authored by Luke Pinkerton, Helix Steel with Juan Aguilera and Damian Aguilera of Tecnologia En Concreto Del Norte, S.A. de C.V.
1 Feb, 2011
Artículo publicado originalmente en México ACI febrero / marzo de 2011 Edition. Escrito por Lucas Pinkerton, una espiral de acero con Juan Aguilera y Aguilera, Damián de la Tecnología en Concreto Del Norte, SA de CV
1 Jul, 1998
The article is a summary of a new concrete reinforcing technology and the patent application for it. It’s a new fiber with a new shape. The new reinforcement improves the properties of concrete which is naturally brittle and weak. This new product later became Helix.
1 Jan, 2015
Article published in Concrete Engineering International - January 2015 - Helix customer Colorado Precast is the spotlight with their 15,500 gallon tanks. These tanks are now reinforced with a Helix Hybrid design drastically reducing the required rebar and labor time.
9 Dec, 2014
Intro from the article: "When Colorado Precast Concrete Inc. manufactured the first of what it calls its “hybrid tanks,” it was for a single order. The idea was to use a minimal cage to affix the anchors needed for moving the 15,500-gallon precast concrete tank in tandem with steel fiber reinforcement to replace the rest of the traditional reinforcement. This provided the necessary strength while reducing the time the form was in use." View the article in the attached PDF for read the article on the website at http://precast.org/2014/12/precast-concrete-tank/
25 Nov, 2014
Intro from the article: "HIGHLANDVILLE, Mo. -- Many here in the Ozarks know it as that 'giant castle' in Christian County. A lot of people also have their opinions about why Pensmore Mansion is being built and what's going on behind its walls. KOLR10 got a look inside the mega mansion and spoke with its owner who said he hopes people focus more on the structure's cutting-edge construction, rather than the conspiracy theories." View a PDF of the article here or visit the site http://www.ozarksfirst.com/story/d/story/what-is-going-on-inside-pensmore-castle/33815/CTwBv4-e4kG-F-hmFe0-nQ
11 Jul, 2014
http://www.greencasamaryland.org - Learn about Insulated Concrete Form Walls and our Green Model Home! BuildBlocks and Helix Fiber, 2 leading companies in sustainable construction, partnered with us on this one. The attached picture is a picture of the model home built to display sustainable construction materials and technology. Watch a video about it on YouTube: http://youtu.be/3JeTVfg8v-E
21 Jun, 2014
2nd Place! California Polytechnic State University, San Luis Obispo finished second overall with Helix used in their canoe rails. Photo credits: Ed Rieker/AP Images for American Society of Civil Engineers; http://www.asce.org/concretecanoe/2014_photos/
20 Feb, 2014
This report accredits Helix Micro-Rebar 5-25 and its design method under ISO Guide 65 for use as an alternative to conventional rebar and wire mesh in concrete. Helix Micro-Rebar 5-25 is the only discontinuous concrete reinforcement product in the world that now has a ISO certified design manual that can be followed to design vertical applications (such as walls) with Helix as the primary concrete reinforcement.
22 Apr, 2013
A short news article and video clip detailing the rebuilding of a medical practice in Joplin, MO that was destroyed by an EF5 tornado in May 2011. The new facility is a TF Systems, Helix reinforced ICF structure designed to withstand winds up to 200 mph and be energy efficient. View the video at http://fourstateshomepage.com/fulltext?nxd_id=389132
22 May, 2012
Helix is now being used in new ICF homes as Joplin residents rebuild after the deadly tornado of 2011. Helix reinforced concrete homes provide superior protection against tornados and other sever weather. A link to the video is provided at the end of the article.
8 May, 2012
Lesa Mitchell, Vice President of the Ewing Marion Kauffman Foundation wrote an article for Huffington Post detailing the story of two commercial technologies that began as academic research. You'll find Helix discussed in the second half of the article.
3 Oct, 2011
Writer Tara Muck shares the technical details behind the new Pensmore mansion. With the rumors settling, she goes in depth about the tecnologies and plans for the structure.
20 Jul, 2011
Forbes writer Morgan Brennan discusses the many mansions of the rich and famous and the newest mega mansion you've probably not heard of - Pensmore. The article discusses some of the rumors surrounding the new project. It also talks about the technologies - and their benefits - used to build the structure.
16 Jul, 2011
Writer A. G. Sulzberger discusses the speculation behind the new construction project and an explanation for its not so expected location. The article also touches on the technology involved and owner Steven Huff's intentions for the project.