scholarly journals A practical model to predict the flow of water-powder mixes and its application to mix design of cementitious blends

2021 ◽  
pp. 104352
Author(s):  
Lukas G. Briendl ◽  
Markus Krüger ◽  
Florian Mittermayr ◽  
Joachim Juhart
Keyword(s):  
Mix Design ◽  
Practical Model

scholarly journals Practical Model of Cement Based Grout Mix Design, for Use into Low Level Radiation Waste Management

2015 ◽  
Vol 11 (4) ◽  
pp. 10-20
Author(s):  
Lidia Radu ◽  
Nastasia Saca ◽  
Claudiu Mazilu ◽  
Maria Gheorghe ◽  
Ionela Petre
Keyword(s):  
Radioactive Waste ◽  
Waste Management ◽  
Functional Performance ◽  
Design Method ◽  
Mix Design ◽  
Low Level ◽  
Practical Model ◽  
Inorganic Waste ◽  
Mechanical Strengths ◽  
Low Level Radioactive Waste

Abstract The cement based grouts, as functional performance composite materials, are widely used for both immobilisation and encapsulation as well as for stabilization in the field of inorganic waste management. Also, to ensure that low level radioactive waste (LLW) are contained for storage and ultimate disposal, they are encapsulated or immobilized in monolithic waste forms, with cement –based grouts. The paper includes some research data referring to cement based grout mix design for use as encapsulating/immobilizing system for low level radioactive waste. The work includes cement-based-grout mix design method used practically into establishing of the optimum grout mix based on the water/cement ratio, cement/sand ratio in order to achieve application requiered values of fluidity, segregation resistance, shrinkage and mechanical strengths. These engineering grout characteristics present relevance for simulation experiments of radionuclide leaching from LLW – cement grout encapsulation system.

COMPARATIVE PERFORMANCE EVALUATION OF PMB and CRMB WITH PARTIAL REPLACEMENT OF BITUMEN (VG-30) USING MARSHALL MIX DESIGN METHOD-A REVIEW

2018 ◽  
Vol 5 (02) ◽  
Author(s):  
N. SATHEESHKANNA
Keyword(s):  
Performance Evaluation ◽  
Design Method ◽  
Mix Design ◽  
Partial Replacement ◽  
Comparative Performance

Waste generated from industries and from various places around us not only contains rubber or plastics but contains lot many harmful pollutants whichare hazardous if disposed continuously in open and leftto degrade in our environment.Our project aims to study properties of different materials which may help in utilising the waste as well as improve the quality of roads and make them efficient, stable, durable and long lasting. Some of the materials that we have studied and considered to be tested in the partial replacement of bitumen are PMB and CRMB.

Leadership, morality and ethics: Developing a practical model for moral decision-making

2018 ◽  
Author(s):  
Alfred W. Kaszniak ◽  
Cynda H. Rushton ◽  
Joan Halifax
Keyword(s):  
Decision Making ◽  
Applied Ethics ◽  
Moral Decision ◽  
Moral Decision Making ◽  
Contemplative Science ◽  
Practical Model

The present paper is the product of collaboration between a neuroscientist, an ethicist, and a contemplative exploring issues around leadership, morality, and ethics. It is an exploration on how people in roles of responsibility can better understand how to engage in discernment processes with more awareness and a deeper sense of responsibility for others and themselves. It draws upon recent research and scholarship in neuroscience, contemplative science, and applied ethics to develop a practical understanding of how moral decision-making works and is essential in this time when there can seem to be an increasing moral vacuum in leadership.

Effect of mechanical restraint on the rate of corrosion in concrete

1998 ◽  
Vol 25 (1) ◽  
pp. 81-86 ◽  
Author(s):  
N Hearn ◽  
J Aiello
Keyword(s):  
Mix Design ◽  
Concrete Repair ◽  
Accelerated Corrosion ◽  
One Dimensional ◽  
Mechanical Restraint ◽  
Corrosion Rates ◽  
Accelerated Corrosion Tests ◽  
The Matrix ◽  
The Relationship

Experimental work on prismatic concrete specimens was conducted to determine the relationship between mechanical restraint and the rate of corrosion. The current together with the changes in strain of the confining frame were monitored during the accelerated corrosion tests. The effect of mix design and cracking on the corrosion rates was also investigated. The results show that one-dimensional mechanical restraint retards the corrosion process, as indicated by the reduction in the steel loss. Improved quality of the matrix, with and without cracking, reduces the rate of steel loss. In the inferior quality concrete, the effect of cracking on the corrosion rate is minimal.Key words: corrosion, concrete, repair.

scholarly journals Mortars with Recycled Aggregates from Building-Related Processes: A ‘Four-Step’ Methodological Proposal for a Review

2021 ◽  
Vol 13 (5) ◽  
pp. 2756
Author(s):  
Federica Vitale ◽  
Maurizio Nicolella
Keyword(s):  
Building Materials ◽  
Thermal Analyses ◽  
Construction Materials ◽  
Physical And Mechanical Properties ◽  
Research Trends ◽  
Mix Design ◽  
Recycled Aggregates ◽  
Design Parameters ◽  
Natural Aggregates ◽  
By Products

Because the production of aggregates for mortar and concrete is no longer sustainable, many attempts have been made to replace natural aggregates (NA) with recycled aggregates (RA) sourced from factories, recycling centers, and human activities such as construction and demolition works (C&D). This article reviews papers concerning mortars with fine RA from C&D debris, and from the by-products of the manufacturing and recycling processes of building materials. A four-step methodology based on searching, screening, clustering, and summarizing was proposed. The clustering variables were the type of aggregate, mix design parameters, tested properties, patents, and availability on the market. The number and the type of the clustering variables of each paper were analysed and compared. The results showed that the mortars were mainly characterized through their physical and mechanical properties, whereas few durability and thermal analyses were carried out. Moreover, few fine RA were sourced from the production waste of construction materials. Finally, there were no patents or products available on the market. The outcomes presented in this paper underlined the research trends that are useful to improve the knowledge on the suitability of fine RA from building-related processes in mortars.

Sign in / Sign up

Export Citation Format

Share Document