Results 261 to 270 of about 5,150 (292)

Flexural tests on pre-tensioned lightweight concrete beams

Proceedings of the Institution of Civil Engineers - Structures and Buildings, 2014
Eight pre-tensioned beams made using lightweight concrete with a design compressive strength of 35 MPa were tested under two symmetrical third-point concentrated loads. The main variables investigated were the eccentricity and effective prestress of the strands and the partial prestressing ratio.
Keun-Hyeok Yang, Ju-Hyun Mun, Jae-Sam Lee   +2 more
openaire   +1 more source

Vegetable Fiber Pre-tensioning Influence on the Composites

2021
Today the world is looking at a bio-composites having eco environmental conditions, non hazardous to animals, easily recyclable, cost effective etc. In this regard many bio-composites were already developed with giving due Weightage to aforementioned parameters but nevertheless still there are plenty of issues exists.
Hombalmath , Mahesh M., Patil, Arun Y, Kohli, Anirudh, Khan , Anish   +3 more
openaire   +2 more sources

Anchored and Pre-tensioned Geosynthetics in Unpaved Roads

Advances in Transportation and Geoenvironmental Systems Using Geosynthetics, 2000
Unpaved roads built over soft, weak subgrade have been used extensively in the Southeast Asian region as temporary site access roads, forest roads and low volume roads. In Singapore, unpaved roads are often preferred in military training areas for better concealment.
K. W. Leong, S. A. Tan, S. H. Chew, G. P. Karunaratne, W. Y. Chia, P. Thein   +5 more
openaire   +1 more source

Cracking of pre-tensioned beams

2008
At the serviceability limit state international standards require for partially prestressed concrete members the decompression of the section under quasi-permanent loads or the limitation of the cracking under frequent loads, depending on the environmental exposure class.
DEBERNARDI P. G, TALIANO, Maurizio
openaire   +2 more sources

Pre‐tensioning for Preventing Fatigue Failure in Bolts

Aircraft Engineering and Aerospace Technology, 1952
The prevention of fatigue in bolts by controlled pre‐tensioning is investigated theoretically. It is shown that the effect of pre‐tension is to reduce the alternating load in the bolt and that the stiffness of the fitting plays an important part in this reduction. Fatigue tests on ¾‐in. B.S.F.
W.A.P. Fisher, R.H. Cross, G.M. Norris
openaire   +1 more source

On the Construction of Pre-tensioned Hollow Beams

2011 Second International Conference on Digital Manufacturing & Automation, 2011
The construction of Hollow beams pre-tensioned is common in the construction of the bridge construction project, because it has a larger span, the characteristics of can be prefabricated, it has great promotional value. This article according to Beijing-Zhuhai Expressway Extension Project in the instance of bridge construction, respectively from the ...
openaire   +1 more source

Crack Behaviour of Retrofitted Pre-Tensioned Concrete Beam

Applied Mechanics and Materials, 2015
Crack is a common cause of the degradation of concrete and may affect its structural durability. In order to ensure the bridge is safe utilized in anticipated period of their future service, a proper maintenance process and procedure should be taken.
Nurul Huda Suliman, A. Abu Bakar, Siti Hawa Hamzah, Norzahiah Shahar   +3 more
openaire   +1 more source

Pre-tensioning of fabrics in cement-based composites

Cement and Concrete Research, 2007
This paper studies the effects induced by applying a pre-tension load during the production of fabric–cement composites. The flexural behavior as well as the bonding between the different fabrics and the cement matrix was examined, as a means for characterizing the processing parameters.
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Experimental investigation of the pre-tension effects on the modal parameters of a slender pre-tensioned concrete beam

Slender pre-tensioned concrete structures are nowadays of common use, due to their unique features. Slender beam can be used to sustain large structures and important loads leaving the architects a lot possibilities in the structure design. The health of such structures is strictly related to the conditions of the tendon that, in many cases, are not ...
Alfredo Cigada, Alessandro Caprioli, Marcello Vanali Politecnico di Milano   +2 more
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Bending Strength of Pre-tensioned (PRT) Concrete Beam

2015
This paper presents a preliminary study on bending strength of pre-tensioned (PRT) concrete beam as the experiment result can be used in maintenance planning. The production of beam was according to BS8110, BS4449:2005 and BS5896 for concrete, reinforcement bar and strand, respectively.
Nurul Huda binti Suliman, Siti Hawa binti Hamzah, Afidah binti Abu Bakar, Norliyati Mohd Amin   +3 more
openaire   +1 more source