The Research and Application of Self-Compacting Concrete

2006 ◽  
Vol 302-303 ◽  
pp. 384-390 ◽  
Author(s):  
Xin Wen Yu ◽  
Yu Hai Gao ◽  
Dong Hao ◽  
Shu Zhi Li ◽  
Lan Ying Wang
Keyword(s):  
Concrete Structure ◽  
High Performance ◽  
Environmentally Friendly ◽  
Mineral Admixtures ◽  
Self Compacting Concrete ◽  
Composite Binder ◽  
Chemical Admixtures ◽  
Chemical Admixture ◽  
Materials Used ◽  
Construction Works

Self-compacting concrete (SCC) has the environmentally friendly effect. The SCC can be prepared by using the technical approaches of “Double adding” (adding mineral admixtures and chemical admixtures and) low W/B (the ratio of water to composite binder). According to the requirements of design and construction, SCC of C30～C60 can be produced by selecting materials used and adjusting the amount and composition of composite binder, the dosage and composition of high performance chemical admixture as well as W/B, based on the reasonable component of SCC with volume. It had been applied successfully in some construction works in several, such as concrete filled steel pipe column and strengthening of concrete structure.

Cementitious Materials Usage in Self-Compacting Concrete: A Review

2015 ◽  
Vol 1113 ◽  
pp. 153-160 ◽  
Author(s):  
Ahmad Farhan Hamzah ◽  
Mohd Haziman Wan Ibrahim ◽  
Norwati Jamaluddin ◽  
Ramadhansyah Putra Jaya ◽  
Norul Ernida Zainal Abidin
Keyword(s):  
High Performance Concrete ◽  
Concrete Strength ◽  
Bottom Ash ◽  
Cementitious Materials ◽  
Energy Utilization ◽  
Supplementary Cementitious Materials ◽  
Mineral Admixtures ◽  
Self Compacting Concrete ◽  
Conventional Concrete ◽  
Materials Used

There are significant changes observed in concrete materials, the properties of innovated concrete have also experiencing revolutionize through hi-tech encroachment. Instead of new changes in the materials used in concrete making, the adjustment in concrete is started from conventional concrete strength and slowly tracked by high-strength concrete and high-performance concrete. Recently, the exploitation of by-products waste in the self-compacting concrete (SCC) had achieved massive interest among researchers due to practicable and beneficial features. Most of the prior works focused on SCC combining with supplementary cementitious materials such as fly ash, coal bottom ash, silica fume, ground granulated glass blast-furnace slag and rice husk ash. Concrete with these cementitious materials have been used extensively throughout the world. These materials used as mineral admixtures in concrete and strengthen the durability and concrete properties. The concrete applications are increasing with the passage of time due to their superior structural performance, environmental friendliness and low impact on energy utilization. Through these understanding, this research points out the idea of cementitious materials in concrete, especially SCC possess with numerous positive features such as durability, flowability and overall performance of concrete. It can be seen that cementitious materials have high benefit and lead to curing potential. However, it is important to understand that these materials are relatively expensive. Thus, this is a main reason behind their less adoption compared to add as mixtures in Portland cement.

scholarly journals Influence of Mineral Admixtures on the Properties of Self-Compacting Concrete: An Overview

CONSTRUCTION ◽  
2021 ◽  
Vol 1 (2) ◽  
pp. 62-75
Author(s):  
Mohammad I. Albiajawi ◽  
RAHIMAH EMBONG ◽  
Khairunisa Muthusamy
Keyword(s):  
Mechanical Performance ◽  
Bottom Ash ◽  
Cost Effective ◽  
Heat Of Hydration ◽  
Mineral Admixtures ◽  
Self Compacting Concrete ◽  
Granulated Blast Furnace Slag ◽  
Concrete Mixtures ◽  
Chemical Admixtures ◽  
Furnace Slag

Mineral admixtures are often utilized in Self-Compacting Concrete (SCC) mixtures to provide stability and resistance to bleeding and segregation throughout transportation and placement. Additionally, these more refined materials help in lowering building costs and reducing the use of main resources. SCC is an innovative method of concrete, which is placed and compacted without the use of vibration. As a result, the concrete mixture has the ability to flow under its self-weight to fully fill formwork and achieve total compaction even when reinforced by crowded reinforcement. However, self-compacting concrete is not cost-effective, which results in the use of large amounts of ordinary cement and chemical admixtures. The utilization of mineral admixtures, including silica fume, ground granulated blast furnace slag, fly ash, and coal bottom ash, is an alternative method to decrease the high cost of self-compacting concrete - it is a term, which refers to the components that have been finely divided and added to concrete during the mixing process. Furthermore, the utilization of admixtures in the fabrication of self-compacting concrete has shown that it helps in lowering the heat of hydration. In addition, the inclusion of admixtures reduces the necessity for chemical admixtures that increase viscosity in concrete mixtures. This study aims to provide an overview of the previously conducted studies on mineral admixtures, which are utilized in SCC. Moreover, the study aims to discuss the durability and mechanical performance of SCC.

Green and facile preparation of graphene/resveratrol/polyaniline composites for high-performance supercapacitors

2021 ◽  
Vol 45 (7) ◽  
pp. 3581-3588
Author(s):  
Zhaokun Wang ◽  
Licong Jiang ◽  
Hongwei Pan ◽  
Yongyin Cui ◽  
Chengzhong Zong
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Environmentally Friendly ◽  
Reduced Graphene ◽  
Facile Preparation ◽  
Polyaniline Composites

A novel and environmentally-friendly resveratrol (RA) was used as an effective reagent for the preparation of reduced graphene oxide (rGO).

State of art review on self compacting concrete using mineral admixtures

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
S. Dey ◽  
V. V. Praveen Kumar ◽  
K. R. Goud ◽  
S. K. J. Basha
Keyword(s):  
Mineral Admixtures ◽  
Self Compacting Concrete ◽  
State Of Art

scholarly journals Environmentally Friendly, High-Performance Fire Retardant Made from Cellulose and Graphite

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2400
Author(s):  
Leandra P. Santos ◽  
Douglas S. da Silva ◽  
Thais H. Morari ◽  
Fernando Galembeck
Keyword(s):  
High Performance ◽  
Raw Materials ◽  
Fire Retardant ◽  
Visual Observation ◽  
Flame Resistance ◽  
New Developments ◽  
New Class ◽  
New Material ◽  
Accredited Laboratory ◽  
Materials Used

Many materials and additives perform well as fire retardants and suppressants, but there is an ever-growing list of unfulfilled demands requiring new developments. This work explores the outstanding dispersant and adhesive performances of cellulose to create a new effective fire-retardant: exfoliated and reassembled graphite (ERG). This is a new 2D polyfunctional material formed by drying aqueous dispersions of graphite and cellulose on wood, canvas, and other lignocellulosic materials, thus producing adherent layers that reduce the damage caused by a flame to the substrates. Visual observation, thermal images and surface temperature measurements reveal fast heat transfer away from the flamed spots, suppressing flare formation. Pinewood coated with ERG underwent standard flame resistance tests in an accredited laboratory, reaching the highest possible class for combustible substrates. The fire-retardant performance of ERG derives from its thermal stability in air and from its ability to transfer heat to the environment, by conduction and radiation. This new material may thus lead a new class of flame-retardant coatings based on a hitherto unexplored mechanism for fire retardation and showing several technical advantages: the precursor dispersions are water-based, the raw materials used are commodities, and the production process can be performed on commonly used equipment with minimal waste.

scholarly journals Lightweight Self-Compacting Concrete Incorporating Industrial Rejects and Mineral Admixtures: Strength and Durability Assessment

Silicon ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1779-1785 ◽  
Author(s):  
P. O. Awoyera ◽  
I. I. Akinwumi ◽  
V. Karthika ◽  
R. Gobinath ◽  
R. Gunasekaran ◽  
...  
Keyword(s):  
Mineral Admixtures ◽  
Self Compacting Concrete ◽  
Durability Assessment ◽  
Strength And Durability
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