Navigation Links
Secret of sandcastle construction could help revive ancient building technique, researchers say
Date:6/2/2009

The secret of a successful sandcastle could aid the revival of an ancient eco-friendly building technique, according to research led by Durham University.

Researchers, led by experts at Durham's School of Engineering, have carried out a study into the strength of rammed earth, which is growing in popularity as a sustainable building method.

Just as a sandcastle needs a little water to stand up, the Durham engineers found that the strength of rammed earth was heavily dependent on its water content.

Rammed earth is a manufactured material made up of sand, gravel and clay which is moistened and then compacted between forms to build walls. Sometimes stabilisers such as cement are added but the Durham research focussed on unstabilised materials.

The research, funded by the Engineering and Physical Sciences Research Council (EPSRC) and published in the journal Geotechnique, showed that a major component of the strength of rammed earth was due to the small amount of water present.

Small cylindrical samples of rammed earth underwent "triaxial testing" where external pressures are applied to model behaviour of the material in a wall. The researchers found that the suction created between soil particles at very low water contents was a source of strength in unstabilised rammed earth.

They showed that rammed earth walls left to dry after construction, in a suitable climate, could be expected to dry but not lose all their water. The small amount of water remaining provided considerable strength over time.

The researchers say their work could have implications for the future design of buildings using rammed earth as the link between strength and water content becomes clearer.

There is increasing interest in using the technique as it may help reduce reliance on cement in building materials (cement production being responsible for five per cent of man's CO2 output (1)). Rammed earth
'/>"/>

Contact: Leighton Kitson
leighton.kitson@dur.ac.uk
44-191-334-0674
Durham University
Source:Eurekalert

Page: 1 2 3

Related biology technology :

1. Graphene yields secrets to its extraordinary properties
2. Pizza tossing art unlocks secrets of tiny motors
3. Secretropin(R) - Effective, Preferable, Affordable as an Alternative to Injectable Growth Hormone - Gains Momentum
4. Cracking the Code: Exclusive Conference to Reveal Secrets of Chinese Pharmaceutical Industry
5. Sea urchin yields a key secret of biomineralization
6. U.S. Commerce Secretary Gutierrez Cuts Ribbon on MaxWell Biocorporations New Pharmaceutical Development Center and Quality Control Laboratory in Ukraine
7. HHS Secretary Leavitt Announces Members of the National Biodefense Science Board
8. U.S. Commerce Secretary Gutierrez to Address AdvaMed 2007
9. NanoLogix Begins Construction of Production Facility for Medical Test Kits
10. New Generation Biofuels Completes Construction of Baltimore Facility
11. Asbestos, Pharmaceutical Liability, Construction Defects, Nanotech: Covered by Targeted CLE Teleconferences
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/19/2014)... 19, 2014 The new , Healthcare ... , available today on PharmaBoardroom.com for free ... that rocked the Spanish economy in 2009, and the austerity ... has remained pragmatic in times of trouble. "Despite ... fifth biggest European market, and the general conditions to invest ...
(Date:9/18/2014)... /PRNewswire-iReach/ -- DeepResearchReports.com adds "2014 Deep Research Report ... "2014 Deep Research Report on Global and China ... Photo - http://photos.prnewswire.com/prnh/20140918/147058 ... and China Acetic Acid Industry" is a professional ... and Global Acetic Acid Market. The ...
(Date:9/18/2014)... 18, 2014 Texas Governor Rick ... Texas A&M Health Science Center CEO Brett Giroir, ... Health and Human Services (HHS), State of Texas ... pandemic influenza vaccine manufacturing facility in Bryan, Texas, ... for the Texas A&M Biocorridor – a rapidly ...
(Date:9/18/2014)... DUBLIN , Sept. 18, 2014 ... the "Global Human Albumin Industry Report 2014" ... Human Albumin Industry Report 2014 is a professional and ... human albumin industry. The report provides a ... and industry chain structure. The human albumin market analysis ...
Breaking Biology Technology:PharmaBoardroom Releases New Spain Pharmaceuticals Report 2PharmaBoardroom Releases New Spain Pharmaceuticals Report 3Acetic Acid Market & Sodium Stannate Industry (China, Global) Research Report 2Acetic Acid Market & Sodium Stannate Industry (China, Global) Research Report 3Acetic Acid Market & Sodium Stannate Industry (China, Global) Research Report 4Texas A&M Dedicates National Pandemic Influenza Vaccine Manufacturing Facility, on Track for 2016 Start-Up Phase 2Texas A&M Dedicates National Pandemic Influenza Vaccine Manufacturing Facility, on Track for 2016 Start-Up Phase 3Texas A&M Dedicates National Pandemic Influenza Vaccine Manufacturing Facility, on Track for 2016 Start-Up Phase 4Global Human Albumin Industry Report 2014 2Global Human Albumin Industry Report 2014 3
... PRXL ) has appointed Charles A. Stevens as ... Strategic Reimbursement Services, a,unit based in the Washington, ... dedicated to helping PAREXEL,s clients provide solutions to ... they require. His,responsibilities include managing reimbursement service and ...
... WOODLANDS, Texas, Dec. 10 Lexicon,Pharmaceuticals, Inc. (Nasdaq: ... management will participate in the RBC Capital Markets,Healthcare Conference ... at The Westin Times Square Hotel in New York, ... Eastern Time., A live audio webcast of the ...
... Nash Corporation,(Nasdaq: KNSY ) is scheduled to participate ... & Tissue" at the 2007 RBC Capital Markets,Healthcare Conference., ... in the panel,discussion on Thursday, December 13th at 8:00 ... in New York. The conference is by invitation only,however ...
Cached Biology Technology:PAREXEL Appoints Charles A. Stevens as Vice President/General Manager of Health Policy and Strategic Reimbursement and Strengthens Capabilities 2PAREXEL Appoints Charles A. Stevens as Vice President/General Manager of Health Policy and Strategic Reimbursement and Strengthens Capabilities 3PAREXEL Appoints Charles A. Stevens as Vice President/General Manager of Health Policy and Strategic Reimbursement and Strengthens Capabilities 4PAREXEL Appoints Charles A. Stevens as Vice President/General Manager of Health Policy and Strategic Reimbursement and Strengthens Capabilities 5Lexicon Pharmaceuticals to Present at RBC Capital Markets Healthcare Conference 2
(Date:9/18/2014)... system that can operate inside the bore of an ... a biomedical research partnership program at Brigham and Women,s ... the robot, in conjunction with real-time MRI images, can ... and less discomforting for the patient. The novel system ... with greater precision. , Developed by a team of ...
(Date:9/18/2014)... No matter how many times it,s demonstrated, ... communicating creatures. , But by using a ... radically alter their behavior to suit their population. ... them are present, and act accordingly. , Once ... it may change from innocuous to pathogenic, or ...
(Date:9/18/2014)... stored in DNA, tiny strands of nucleic acid that ... express this genetic data, our DNA is copied into ... that perform tasks in our cells. , Several ... molecule. Unlike all other known RNAs, this molecule is ... are abundant, little has been known about how they ...
Breaking Biology News(10 mins):Trial begins for MRI-compatible robot designed to improve accuracy of prostate biopsies 2Trial begins for MRI-compatible robot designed to improve accuracy of prostate biopsies 3Trial begins for MRI-compatible robot designed to improve accuracy of prostate biopsies 4Trial begins for MRI-compatible robot designed to improve accuracy of prostate biopsies 5Researchers study vital 'on/off switches' that control when bacteria turn deadly 2Researchers study vital 'on/off switches' that control when bacteria turn deadly 3Scientists find how mysterious 'circular RNA' is formed, claim muscular dystrophy link 2
... (SALT LAKE CITY)Alternating hemiplegia of childhood (AHC) is a ... episodes of paralysis and stiffness, first affecting one side ... and disappear, again and again, and affected children often ... older, children fall progressively behind their peers in both ...
... smog-filled sky or a contaminated river, according to a ... for the prosperous. People living in China,s cities ... more likely to begreen: re-using their plastic grocery bags ... the international journal AMBIO , indicates that the ...
... doesn,t mean making a trip to the local pharmacy for ... the forest to provide a pharmacopeia of medicines to ... But while questions persist about whether such natural remedies are ... examining the phenomenon from a unique perspective, and trying to ...
Cached Biology News:Gene mutations linked to most cases of rare disorder -- Alternating Hemoplegia of Childhood 2Gene mutations linked to most cases of rare disorder -- Alternating Hemoplegia of Childhood 3Pollution can make citizens - both rich and poor - go green 2Health care savings, naturally 2Health care savings, naturally 3
Request Info...
Unit Definition: 1 U corresponds to the amount of enzyme which produces 1 mol protons per minute at pH 5.5 and 30C (peptin from citrus peel, Fluka-No. 76280, as substrate)...
... This product is expected to ... mammalian species but has not been ... single precipitin line against partially purified ... to react with all forms of ...
Rabbit polyclonal to Somatostatin 28 ( Abpromise for all tested applications). entrezGeneID: 6750 SwissProtID: P61278...
Biology Products: