Results 121 to 130 of about 84,062 (265)

Viscosity, yield stress and compressive strength of cement-based grout modified with polymers

, 2019
In this study, two types of polycarboxylate (PCE) polymer (DBC-21 and VK-98) were used as additives in the cement-based grout. The water-cement ratio (w/c) was fixed to 0.6 and 1.0 ​at temperature of 25° Celsius and 50° Celsius.
Wael Mahmood, A. Mohammed, Kawan Ghafor
semanticscholar   +1 more source

Thermal imaging for void detection and quantification in precast grouted structures using computer vision

Alexandria Engineering Journal
Grout penetration plays a pivotal role in ensuring the structural integrity and longevity of precast structural elements in construction industry. Insufficient grout penetration can lead to weak points in the structure, posing risks of leaks, collapses ...
Varun Patrikar, G. Malathi, M.Helen Santhi, Huseyin Bilgin   +3 more
doaj   +1 more source

Assessment of Design Procedures for Vertical Borehole Heat Exchangers [PDF]

, 2015
The use of ground source energy systems is a well-established method to provide low cost heating to buildings, diversify the energy mix and help meeting increasingly stricter sustainability targets.
Keirstead, J, Sailer, E, Taborda, DMG
core  

Influencing Factors and Control Effects of Targeted Grouting Technology for Underground-excavated Metro Station Construction

Chengshi guidao jiaotong yanjiu
[Objective] In conventional grouting construction technology, the ineffective diffusion of grout is comparatively severe and leads to unsatisfactory reinforcement effects on surrounding rock and soil mass.
Lijuan ZHA
doaj   +1 more source

Calculation model and verification of shield tunnel segment flotation based on grout buoyancy dissipation characteristics

Yantu gongcheng xuebao
Addressing the frequent issue of segment flotation during shield tunnel construction, this study first employs a self-developed testing device to reveal the time-dependent variation patterns of net buoyancy in typical single-component grout and two ...
WANG Xianming1 , WANG Shimin1 , LIN Zhiyu1, ZHONG Meiyun1, CHEN Peng2, CHEN Jianfu
doaj   +1 more source

An experimental investigation of retro-reinforced clay brick arches

, 2010
This paper describes the laboratory testing of eight 2.95m span segmental profile clay brick arches. Seven of the arches were strengthened with longitudinal intrados (soffit) reinforcement; the eighth was left unreinforced as an experimental control ...
Ashour, AF, Chen, Y, Garrity, SW
core  

Competition Law in Telecommunications and its Implications for Common Carriage of Water [PDF]

As with most water companies in the world UK water companies face very little competition for the delivery of water within their area. However, recently both the government and the regulator, Ofwat, have indicated that they wish to see a major change in ...
Paul A Grout
core  

Effective Lower Bounding Techniques for Pseudo-Boolean Optimization

, 2005
Linear Pseudo-Boolean Optimization (PBO) is a widely used modeling framework in Electronic Design Automation (EDA). Due to significant advances in Boolean Satisfiability (SAT), new algorithms for PBO have emerged, which are effective on highly ...
Manquinho, V., Marques-Silva, J. P.
core   +2 more sources

Effect of hydrostatic pressure on water and solute transport in post-tensioned grout

Discover Civil Engineering
Post-tensioned (PT) structures face critical durability challenges related to grout deficiencies, particularly concerning water segregation and solute transport at elevated heights. This study investigates the effects of hydrostatic pressure on water and
Rutambara Sonawane
doaj   +1 more source

Incentives for Spatially Coordinated Land Conservation: A Conditional Agglomeration Bonus [PDF]

Environmental Economics and Policy, Land Economics/Use,
Grout, Cyrus A.
core   +1 more source