Contractors World


The construction industries leading e-magazine - Contractors World
free digital publication for construction, demolition, mining and quarrying industries

Contractors World International
2014 Vol 5 No 4
Tell a friend:
Print Page Register (free) Bookmark Page

Contractors World UK
More news in the
Contractors World UK & Ireland Edition


BREAKING NEWS

HANDING OVER TO THE NEXT GENERATION AT T....


AUSTRALIA: Alimak Group signs new Constr....


CASE will be showcasing at IRE 2017....


CASE Appoints New Business Director for ....


Alimak Group acquires Australian Facade ....


SEE MORE


LIBRARIES

• back issues
•  brochures
• 
videos


Contractors World - Eco Friendly publishing

previous page   PAGE 20 of 39     next page

Hydrodemolition on under water bridge columns - continued

Positioning the Aqua Spine equipment around the columnPositioning the Aqua Spine equipment around the column

Positioning the Aqua Spine equipment around the column

Working remotely, from a barge, the operator was able to set the jet angle, number of passes and speed of travel of the hydrodemolition head.

The system was set to make a controlled traverse in a complete circle of the column, before ‘auto indexing' to the next level and continuing until the cycle was completed – i.e. the length of the Aqua Spine at 6 m.

Divers then released the clamps and the frame was lowered by crane to the next level and clamped again. The cycle then continued.

Jeremy Twigg, RGL's Commercial Director, confirmed that, had the company employed divers for the underwater preparation work, it would have taken 10 times longer. “Plus,” he added “the quality achieved by the Aqua Spine was so much better.”

Supplied with a power and control Unit, it features Aquajet's patented Intelligent Sensing Control (ISC). An advanced sensing system, it features no electronics, such as sensors or cables, exposed to the moisture environs – resulting in a more efficient production with fewer stops due to problems with, for example, sensors.

“We particularly liked the Aqua Spine's wireless controller and ISC sensorless control,” commented Jeremy Twigg. “It greatly helped towards ensuring continuous reliability in the harsh environment at Arstein; working in deep water and temperatures below 4 ºC.

Between 50 – 250 mm of concrete per pass was removed depending on the condition of the concrete, with only damaged concrete being removed. On average each column was completed in 2 – 3 days.

The depth of the fjord was 16 m which meant as work progressed, underwater checks were carried out both by divers and through underwater camera surveillance to ensure that an even finish was achieved across each column.

The project ran for a total of three months with all 22 columns being completed.

For more information:
>>>
AquaJet Systems AB
>>> Rentajet Group

Tweet this page


This page could be your company.

Reach 100,000 decision makers in the construction industry.

Advertise in Contractors World


 

«  Previous

 

Next  »

 

  previous page   PAGE 20 of 39   next page
red divide
CW Contractors World - the digital publication for construction industry

Contractors World Magazines are published by VVV Limited
©VVV Ltd 2014 All Rights Reserved

Publisher: Roger Lindley
Content compiled and edited by:
Roger Lindley MCIM

Page updated: August/September 2014

World's No 1 - Contractros World

READ OUR OTHER MAGAZINES

Contractors World -UK & Ireland
Contractors World - UK & Ireland up-to-date information on news, plant and equipment from around the world.

CLICK HERE


cmldir.com
Online Buyers Guide of Construction, Quarrying

Contractors World - Eco Friendly publishingBy reading this page on line you are helping to save trees.
Trees saved up to August/September 2012 > 1434


The monthly magazine Contractors World - UK & Ireland is proud to promote and support the Lighthouse Club.
Please give generously. Contractors World Support the Lighthouse Club


CONTRACTORS WORLD MAGAZINES
CML House
7 Bell Mead
Sawbridgeworth
Herts CM21 9ES
UK
Tel: +44 1279 600598
Email: infodesk@cwmags.com
URL: http://cwmags.com

Contractors World is many magazines in one - construction news for latest information (read our daily news pages) and a site equipment magazine featuring site reports from around the world and reviews of construction plant and equipment as it is introduced.

Written specifically for earthmovers, quarry management, plant hire executives, and others with an interest in the construction and related industries.

Registered Office: 54 Sun Street, Waltham Abbey, Essex EN9 1EJ, UK
Registered as a company in England and Wales, number 3892263

Contractors World and the Contractors World - UK & Ireland Edition are independent publications published through CWMAGS by VVV Ltd.

The mention of companies and/or products within the editorial pages or in advertisements does not infer any endorsement by the publisher or editors. All editorial is freely given, without conditions and at the sole discretion of the editor. Opinions expressed by contributors are not necessarily those of the publishers. Other than saving and distributing in complete page formats, copying, reproduction, decoding or disassembly of content or computer code by any means of any part of the publication is prohibited unless prior approval is provided by VVV Ltd in writing and confirmation received of agreement with any terms and conditions applicable. PDF version may be downloaded for personal use but no content may be used for promotional purposes or copied to web sites. All images and video content are subject to copyrights.

Cookie policy: 

Contractors World magazines do not use cookies to gather personal information.  Any use is only temporary to allow you to go from page to page easily.  As with all web sites, the internet server will record general information such as which pages are request, time and date, etc.