Results 61 to 70 of about 588,723 (351)

Portland cement [PDF]

open access: yesJournal of the Franklin Institute
n ...
openaire   +2 more sources

Using of Straw Ash as Additive Material Cement [PDF]

open access: yes, 2012
In this research, Portland cement type 1 made by using raw material clinker and gypsum from production unit in cement plant and also with adding straw ash from the combustion of straw rice plant, the adding of straw ash performed on a particular ...
Junaidi, R. (Robert)   +2 more
core  

Microbialite cathodoluminescence: A tool for investigating palaeoredox conditions, alteration histories and primary textures across time

open access: yesThe Depositional Record, EarlyView.
Microbialites are common throughout the rock record and key to our understanding of Earth history, yet a relatively common microscopy technique—cathodoluminescence (CL)—has not previously been leveraged to understand them. In this contribution, we examine microbialites of varying ages (modern to Proterozoic) with CL and report on the patterns and ...
Cedric J. Hagen   +11 more
wiley   +1 more source

Effect of soluble phosphate, fluoride, and pH in Brazilian phosphogypsum used as setting retarder on Portland cement hydration

open access: yesCase Studies in Construction Materials, 2022
Phosphogypsum (PG) is a residue from the fertilizer industry used by Portland cement companies as a source of calcium sulfate to control the setting time during the hydration (or hardening process).
Rayara Pinto Costa   +5 more
doaj  

Optimization of the Composition of Cement Pastes Using Combined Additives of Alumoferrites and Gypsum in Order to Increase the Durability of Concrete

open access: yesBuildings, 2023
The reliability of concrete structures is closely related to the durability of the concrete materials stable under external environmental conditions.
Svetlana V. Samchenko   +2 more
doaj   +1 more source

Comparison of the Properties of Portland Cement and Portland-Limestone Cement

open access: yesTanzania 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

Binders alternative to Portland cement and waste management for sustainable construction – Part 2

open access: yesJournal of Applied Biomaterials & Functional Materials, 2018
The paper represents the “state of the art” on sustainability in construction materials. In Part 1 of the paper, issues related to production, microstructures, chemical nature, engineering properties, and durability of mixtures based on binders ...
L. Coppola   +62 more
semanticscholar   +1 more source

Work of the cashier\u27s cage [PDF]

open access: yes, 1923
The constantly increasing activity in the Bond business during the last year has witnessed a commensurate augmentation in the membership of this Association.
Association of American Portland Cement Manufacturers   +1 more
core   +1 more source

A Review and Comparative Study of Existing Shrinkage Prediction Models for Portland and Non-Portland Cementitious Materials [PDF]

open access: yes, 2016
This paper reviews shrinkage prediction models for cementitious materials and presents analysis of selected published data utilizing the aforementioned models. The main objective of this review is to revisit and reexamine the primary shrinkage mechanisms,
Radlińska, A., Ye, H.
core   +3 more sources

Seismic performance of concrete tunnel–sand–pile interaction by the shake table test

open access: yesDeep 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

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