scholarly journals Polycarboxylate-Based Superplasticizer Selection for Ready-Mixed Concrete Industry and Performance in Self-Compacting Concrete Production

2015 ◽  
Vol 15 (2) ◽  
pp. 8-18
Author(s):  
Eren Gödek ◽  
Burak Felekoğlu ◽  
Kamile Tosun Felekoğlu
Keyword(s):  
Self Compacting Concrete ◽  
Concrete Production ◽  
Selection For ◽  
And Performance ◽  
Ready Mixed Concrete ◽  
Mixed Concrete

Advanced online water content measurement for self-compacting concrete production in ready-mixed concrete plants

2016 ◽  
Vol 112 ◽  
pp. 570-580 ◽  
Author(s):  
Hai-Thong Ngo ◽  
El-Hadj Kadri ◽  
Abdelhak Kaci ◽  
Tien-Tung Ngo ◽  
Alain Trudel ◽  
...  
Keyword(s):  
Water Content ◽  
Self Compacting Concrete ◽  
Content Measurement ◽  
Concrete Production ◽  
Ready Mixed Concrete ◽  
Mixed Concrete

scholarly journals Feasibility of Eco-Friendly Binary and Ternary Blended Binders Made of Fly-Ash and Oil-Refinery Spent Catalyst in Ready-Mixed Concrete Production

2018 ◽  
Vol 10 (9) ◽  
pp. 3136 ◽  
Author(s):  
Carla Costa ◽  
José Marques
Keyword(s):  
Large Scale ◽  
Construction Materials ◽  
International Standards ◽  
Oil Refinery ◽  
Industrial Wastes ◽  
Spent Catalyst ◽  
Concrete Production ◽  
Ready Mixed Concrete ◽  
Binary Blended Concrete ◽  
Mixed Concrete

Large-scale recycling of new industrial wastes or by-products in concrete has become a crucial issue for construction materials sustainability, with impact in the three pillars (environmental, social and economic), while still maintaining satisfactory, or improved, concrete performance. The main goal of the paper is to evaluate the technological feasibility of the partial, or total, replacement of fly-ashes (FA), widely used in ready-mixed concrete production, with spent equilibrium catalyst (ECat) from the oil-refinery industry. Three different concrete mixtures with binary binder blends of FA (33.3% by mass, used as reference) and of ECat (16.7% and 33.3%), as well as a concrete mixture with a ternary binder blend with FA and ECat (16.7%, of each) were tested regarding their mechanical properties and durability. Generically, in comparison with commercial concrete (i) 16.7% ECat binary blended concrete revealed improved mechanical strength and durability; (ii): ternary FA-ECat blended binder concrete presented similar properties; and (iii) 33% ECat binary blended concrete has a lower performance. The engineering performance of all ECat concretes meet both the international standards and the reference durability indicators available in the scientific literature. Thus, ECat can be a constant supply for ready-mixed eco-concretes production, promoting synergetic waste recycling across industries.

Statistical analysis of Portuguese ready-mixed concrete production

2019 ◽  
Vol 209 ◽  
pp. 283-294 ◽  
Author(s):  
João Nuno Pacheco ◽  
Jorge de Brito ◽  
Carlos Chastre ◽  
Luís Evangelista
Keyword(s):  
Statistical Analysis ◽  
Concrete Production ◽  
Ready Mixed Concrete ◽  
Mixed Concrete

Real-time decision support for planning concrete plant operations enabled by integrating vehicle tracking technology, simulation, and optimization algorithms

2007 ◽  
Vol 34 (8) ◽  
pp. 912-922 ◽  
Author(s):  
Ming Lu ◽  
Fei Dai ◽  
Wu Chen
Keyword(s):  
Decision Support ◽  
Real Time ◽  
Tracking System ◽  
Discrete Event ◽  
Vehicle Tracking ◽  
Prototype System ◽  
Simulation And Optimization ◽  
Concrete Production ◽  
Ready Mixed Concrete ◽  
Mixed Concrete

By integrating the vehicle tracking system, discrete-event simulation algorithm, and evolutionary optimization algorithm, we developed HKCONSIM-Realtime, a decision-support platform created specifically for handling ready-mixed concrete operations. This platform is capable of (1) tracking the positions of concrete trucks and monitoring the motion and status of concrete deliveries in real time, (2) transforming the tracking records into data that provide updated input to simulation, and (3) optimizing the operations and logistics of concrete production based on simulation of the production system using the most current data. This paper presents an overview of the design and development of (1) the hardware and software modules, (2) the data flow and processing throughout the system, and (3) the role of the system in providing interactive, effective support for the human operator to attain cost efficiency. Case studies are given to demonstrate the functionality and application of the prototype system. Key words: simulation, optimization, vehicle tracking, construction planning, ready-mixed concrete, Hong Kong.

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