Results 81 to 90 of about 567,772 (379)
Effects of elevated ground temperatures on properties of cement grouts for deep rock grouting
Deep Underground Science and Engineering, EarlyView.When the temperature is up to 35°C, significant improvement in rheological parameters, acceleration of grout setting, and an increase in the rheological time dependence of thick cement grout can occur, but there may be a slight effect on the initial grout flowability and the nature of shear thinning.
Zhipeng Xu +4 more
wiley +1 more source
Fresh Cement as a Frictional Non-Brownian Suspension [PDF]
Powder Technology 441 (2024) 119791Cement is an essential construction material due to its ability to flow before later setting, however the rheological properties must be tightly controlled. Despite this, much understanding remains empirical. Using a combination of continuous and oscillatory shear flow, we compare fresh Portland cement suspensions to previous measurements on model non ...
arxiv +1 more source
, 1915 In our detailed consideration of this subject we will take up, first of all, the question of manufacturing costs. For the sake of having some concrete basis on which to work we will consider the, case of a cement company operating on the dry process ...
Association of American Portland Cement Manufacturers
core +1 more source
Comparison of the Properties of Portland Cement and Portland-Limestone Cement
Tanzania Journal of Engineering and Technology, 2010 A study was made in a cement factory in Dar es Salaam, Tanzania, where OrdinaryPortland Cement (CEM I 42.5N) and Portland-limestone cement (PLC) which has thebrand name Twiga Cement Extra (CEM II/A-L/32.5R) are produced and conforming to theTanzania Standard TZS 727 (Part1): 2002, which is equivalent to EN 197 published by thecommittee for European ...
openaire +4 more sources
Optimal Pre-hydration Age for CO2 Sequestration through Portland Cement Carbonation
ACS Sustainable Chemistry and Engineering, 2018 An emerging technology of CO2 sequestration in Portland cement (PC) is through accelerated carbonation, where PC is intentionally carbonated at early hydration age and reinitiates long-term hydrati...
Duo Zhang, V. Li, B. Ellis
semanticscholar +1 more source
Seismic performance of concrete tunnel–sand–pile interaction by the shake table test
Deep Underground Science and Engineering, EarlyView.This research presents the square root sum of squares response of displacements and tunnel moments under the Kobe and Loma Prieta seismic excitations with a peak ground acceleration of 0.05 g for various dry relative densities of local sand in Bangladesh.
Md. Foisal Haque, Mehedi A. Ansary
wiley +1 more source
Wildlife Society Bulletin, Volume 46, Issue 5, December 2022., 2022 Our experimental study provides evidence that hydrodynamic artificial shelters are more likely to remain in place and available to hellbenders as augmented cover than traditional boot designs. Microhabitat features are also a driver of shelter availability, and shelter occupancy in North Carolina is consistently low.
Lauren Diaz +3 more
wiley +1 more source
Quality of type I Portland cement from Ghana and UK [PDF]
, 2015 Type I Portland cement is general purpose cement found in many countries and it is manufactured by different companies. This study sought to compare the properties of Type I Portland cements from Ghana (less economically developed country) and United ...
Boateng, Isaac, Danso, Humphrey
core +2 more sources