A study on workability and mechanical properties of eco-sustainable self-compacting concrete incorporating PCB waste and fly ash

2021 ◽  
pp. 129523
Author(s):  
Gritsada Sua-iam ◽  
Burachat Chatveera
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Self Compacting Concrete

Effective Utilization of Industrial and Agricultural Waste for Developing Sustainable Self-Compacting Concrete

2022 ◽  
Vol 1048 ◽  
pp. 376-386
Author(s):  
M.S. Riyana ◽  
Dhanya Sathyan ◽  
M.K. Haridharan
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Portland Cement ◽  
Rice Husk ◽  
Ordinary Portland Cement ◽  
Rice Husk Ash ◽  
Cement Content ◽  
Supplementary Cementitious Materials ◽  
Ternary Blend ◽  
Self Compacting Concrete

SCC (Self compacting concrete) can fill formwork and encloses reinforcing bars under gravity and maintains homogeneity without vibration. SCC shortens the period of construction, guarantees compaction in confined zones, moreover terminates noise due to vibration. The wide spread application of SCC is restricted because of the high cost for the production of SCC with high cement content and chemical admixtures. In order to make the production of SCC economical, and to reduce the high cement content the Ordinary Portland Cement in SCC can be blended with pozzolanic materials like rice husk ash and supplementary cementitious materials like fly ash. In this paper the fresh state properties and mechanical properties such as compressive strength, split tensile strength and flexural strength of SCC with ternary blends of rice husk ash (RHA) and fly ash (FA) were studied. For this purpose, different mixes were prepared by replacing Ordinary Portland Cement (OPC) with 5%, 10%, 15% and 20% of rice husk ash (RHA) and the percentage of addition of fly ash (FA) is fixed as 15% for all these mixes. It was observed that the specimen incorporating 10% of rice husk ash (RHA) and 15% of fly ash (FA) as ternary blend exhibits better mechanical properties such as: Compressive, split tensile and flexural strengths at 28 days of age as compared to traditional mix of SCC without RHA (Rice Husk Ash) and FA (Fly Ash). This research demonstrates that the ideal percentage for a mixture of rice husk ash (RHA) and fly ash as ternary blend is 10% and 15% respectively.

scholarly journals Fresh State and Mechanical Properties of Self Compacting Concrete Incorporating High Volume Fly Ash

2016 ◽  
Vol 47 ◽  
pp. 01001
Author(s):  
N. Mohamad ◽  
M. S. Zulaika ◽  
A. A. A. Samad ◽  
W. I. Goh ◽  
J. Hadipramana ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
High Volume ◽  
Self Compacting Concrete ◽  
High Volume Fly Ash ◽  
Fresh State

Mechanical Properties and Stress-Strain Behaviour of Hybrid Fibre-Reinforced Self-Compacting Concrete

2014 ◽  
Vol 984-985 ◽  
pp. 677-683
Author(s):  
T. Meena ◽  
G. Elangovan ◽  
R. Ganesh
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
Fly Ash ◽  
Fibre Reinforced Concrete ◽  
Self Compacting Concrete ◽  
Stress Strain ◽  
Volume Fractions ◽  
Strain Behaviour ◽  
Hybrid Fibre ◽  
Hardened State

Self-Compacting Concrete (SCC) is a highly flowable, self-levelling concrete. Just as in Fibre Reinforced Concrete (FRC), fibres can be incorporated into SCC also to get FRSCC. In the present study hybrid fibres namely, Polypropylene and hooked ended Steel fibres are incorporated in different volume fractions and their fresh and hardened state properties have been studied. Fly ash and Silica Fume obtained as waste from industries are used as replacement for cement, the replacement being 10% and 5% respectively. The behaviour of HFRSCC under compression, tension and flexure has been experimentally observed. The stress-strain behaviour of SCC and HFRSCC have also been studied by varying the combinations of volume fractions of hybrid fibres.

scholarly journals Alkali-Activated Stainless Steel Slag as a Cementitious Material in the Manufacture of Self-Compacting Concrete

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3945
Author(s):  
Julia Rosales ◽  
Francisco Agrela ◽  
José Luis Díaz-López ◽  
Manuel Cabrera
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Fly Ash ◽  
Steel Slag ◽  
Cementitious Material ◽  
Self Compacting Concrete ◽  
Stainless Steel Slag ◽  
Alkali Activated ◽  
Activating Solution

This work develops the manufacture of self-compacting concrete (SCC) with 50% cement reduction. As an alternative binder to cement, the viability of using an alkali-activated combination of stainless steel slag (SSS) and fly ash (FA) has been demonstrated. SSS was processed applying three different treatments. Binders were manufactured mixing 35% SSS with 65% FA, as precursors, and a hydroxide activating solution. This binder was replaced by the 50% cement for the manufacture of SCC. The results obtained show good mechanical properties and durability. The study shows a reduction in the use of cement in the manufacture of SCC reusing two wastes.

scholarly journals Mechanical Properties of Silica Fume Modified High-Volume Fly Ash Rubberized Self-Compacting Concrete

2021 ◽  
Vol 13 (10) ◽  
pp. 5571
Author(s):  
Wesam Salah Alaloul ◽  
Muhammad Ali Musarat ◽  
Sani Haruna ◽  
Kevin Law ◽  
Bassam A. Tayeh ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Mechanical Strength ◽  
Silica Fume ◽  
High Volume ◽  
Crumb Rubber ◽  
Self Compacting Concrete ◽  
River Sand ◽  
High Volume Fly Ash ◽  
Constituent Component

The existing form of self-compacting concrete (SCC) comprises of a large amount of powdered and fine materials. In this study, a part of the cementitious material was replaced with constant high-volume fly ash, and a portion of fine aggregates was substituted by crumb rubber (CR). Besides that, silica fume (SF) was added, with the hope that by implementing a new type of nanomaterial, the loss in mechanical strength due to previous modifications such as rubberization and replacement will be prevented. Two variables were found to influence the constituent/component in the mix design: SF and CR. The proportion of SF varies from 0% to 10%, while that of CR from 0% to 30% by volume of the total river sand, where 55% of cement was replaced by the fly ash. A total of 13 rubberized SCC samples with CR and SF as controlling variables were made, and their design mix was produced by a Design of Experiment (DOE) under the Response Surface Methodology (RSM). The results reveal a slight increase in the mechanical properties with the addition of SF. The theoretical mathematical models and equation for each different mechanical strength were also developed after incorporating the experimental results into the software.

scholarly journals Mechanical Properties of Fibre Reinforced Self Compacting Concrete using Rice Husk Ash

2019 ◽  
Vol 8 (3) ◽  
pp. 6412-6415 ◽  
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Rice Husk ◽  
Mechanical Characteristics ◽  
Rice Husk Ash ◽  
Fresh Concrete ◽  
Steel Fibers ◽  
Self Compacting Concrete ◽  
Flow Through ◽  
Water Curing

Self-compacting concrete (SCC) is relatively a recent development in the construction world. SCC can flow through dense reinforcement under its own weight without any segregation, bleeding, and vibration. The use of steel fibers is being encouraged to increase mechanical characteristics of SSC. However, adding fibers to fresh concrete results in loss of workability. Steel fibers operate as crack arrestors in concrete and extend the span of structures. In the present study, the mechanical properties of SCC with cement is partially replaced by rice husk ash (RHA) & P500 (ultra-fine fly ash). A total of 5 mixes with 0.3 W/C ratio were cast for 7, 28 and 56 days water curing. The replacement of fibres is considered as 0%, 0.5%, 1%, 1.5%, and 2% by weight of cement. Workability, Compressive, Split Tensile and Flexural strength is studied in this investigation. Superior strength was observed at optimum dosage of steel fibers at 1.5% by weight of cement

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