Effect of supplementary cementitious materials on the compressive strength and durability of short-term cured concrete

In the production of Self Compacting concrete (SCC), the use of quaternary blend of supplementary cementitious materials (SCM’s) has not found enough applications. For this purpose, an effort has been done to present a mix design for M60 grade and M80 grade SCC with quaternary blending of fly ash(FA), ground granulated blast furnace slag (GGBS), silica fume (SF) in accordance with EFNARC guidelines. Findings: In this study, cement has been replaced with SCM’s from 30% to 50%. Fresh properties of concrete were tested for slump flow, T50 test and U box. The hardened properties of concrete were tested for compressive strength and durability. The tests were performed for 7, 28, 56 and 91 days. The results indicate that the use of quaternary blend has improved the workability, compressive strength and durability properties of specimens than the control specimen. Application: The primary contribution is to fill the congestedreinforcement and increase the durability and life span of the structure.

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Feasibility Tests on Concrete with Very-High-Volume Supplementary Cementitious Materials

The Scientific World JOURNAL ◽

10.1155/2014/406324 ◽

2014 ◽

Vol 2014 ◽

pp. 1-11

Author(s):

Keun-Hyeok Yang ◽

Yong-Su Jeon

Keyword(s):

Compressive Strength ◽

Weight Ratio ◽

High Volume ◽

Cementitious Materials ◽

Positive Influence ◽

Supplementary Cementitious Materials ◽

Early Age ◽

Freezing And Thawing ◽

Strength And Durability ◽

Very High

The objective of this study is to examine the compressive strength and durability of very high-volume SCM concrete. The prepared 36 concrete specimens were classified into two groups according to their designed 28-day compressive strength. For the high-volume SCM, the FA level was fixed at a weight ratio of 0.4 and the GGBS level varied between the weight ratio of 0.3 and 0.5, which resulted in 70–90% replacement of OPC. To enhance the compressive strength of very high-volume SCM concrete at an early age, the unit water content was controlled to be less than 150 kg/m3, and a specially modified polycarboxylate-based water-reducing agent was added. Test results showed that as SCM ratio (RSCM) increased, the strength gain ratio at an early age relative to the 28-day strength tended to decrease, whereas that at a long-term age increased up toRSCMof 0.8, beyond which it decreased. In addition, the beneficial effect of SCMs on the freezing-and-thawing and chloride resistances of the concrete decreased atRSCMof 0.9. Hence, it is recommended thatRSCMneeds to be restricted to less than 0.8–0.85 in order to obtain a consistent positive influence on the compressive strength and durability of SCM concrete.

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Effects of corrosion inhibiting admixtures and supplementary cementitious materials combinations on the strength and certain durability properties of HPC

Canadian Journal of Civil Engineering ◽

10.1139/cjce-2016-0237 ◽

2017 ◽

Vol 44 (11) ◽

pp. 918-926 ◽

Cited By ~ 1

Author(s):

H.Z. Lopez-Calvo ◽

P. Montes-Garcia ◽

E.M. Alonso-Guzmán ◽

W. Martinez-Molina ◽

T.W. Bremner ◽

...

Keyword(s):

Compressive Strength ◽

High Performance ◽

High Performance Concrete ◽

Cementitious Materials ◽

Supplementary Cementitious Materials ◽

Durability Properties ◽

Corrosion Evaluation ◽

Chloride Profiles ◽

Calcium Nitrite ◽

Strength And Durability

This paper reports a study carried out to evaluate the effects of corrosion inhibiting admixtures, calcium nitrite and disodium tetrapropenyl succinate, in combination with supplementary cementitious materials, fly ash and silica fume Portland cement, on the compressive strength and certain durability properties of high performance concrete. Mixture formulations, including binary and ternary combinations of these admixtures were evaluated. Chloride profiles after 91 and 365 days of exposure and the compressive strength and electrical resistivity at 1, 7, 14, 28, 180, and 365 days of age were estimated. Also, results of corrosion evaluation after five-year exposure to a natural marine environment at Treat Island Maine, USA are presented and discussed. Results indicate that the use of corrosion inhibitors in combination with supplementary cementitious materials was beneficial, albeit to various degrees, in enhancing the strength and durability properties of high performance concrete with no noticeable adverse effects.

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The Role of Supplementary Cementitious Materials (SCMs) in Ultra High Performance Concrete (UHPC): A Review

Materials ◽

10.3390/ma14061472 ◽

2021 ◽

Vol 14 (6) ◽

pp. 1472

Author(s):

Sungwoo Park ◽

Siyu Wu ◽

Zhichao Liu ◽

Sukhoon Pyo

Keyword(s):

Compressive Strength ◽

High Performance ◽

High Performance Concrete ◽

Cementitious Materials ◽

Supplementary Cementitious Materials ◽

Limestone Powder ◽

Ultra High Performance Concrete ◽

Environmental Aspect ◽

Material Requirement ◽

Strength And Durability

Although ultra high-performance concrete (UHPC) has great performance in strength and durability, it has a disadvantage in the environmental aspect; it contains a large amount of cement that is responsible for a high amount of CO2 emissions from UHPC. Supplementary cementitious materials (SCMs), industrial by-products or naturally occurring materials can help relieve the environmental burden by reducing the amount of cement in UHPC. This paper reviews the effect of SCMs on the properties of UHPC in the aspects of material properties and environmental impacts. It was found that various kinds of SCMs have been used in UHPC in the literature and they can be classified as slag, fly ash, limestone powder, metakaolin, and others. The effects of each SCM are discussed mainly on the early age compressive strength, the late age compressive strength, the workability, and the shrinkage of UHPC. It can be concluded that various forms of SCMs were successfully applied to UHPC possessing the material requirement of UHPC such as compressive strength. Finally, the analysis on the environmental impact of the UHPC mix designs with the SCMs is provided using embodied CO2 generated during the material production.

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A Study on Porous Sealing Efficacy of hydrophilic Admixture on Blended Cement Concrete

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i2.12.11514 ◽

2018 ◽

Vol 7 (2.12) ◽

pp. 446

Author(s):

L Krishnaraj ◽

P T. Ravichandran ◽

M V.A.Karthik ◽

N Satheeshram Avudaiyappan ◽

. .

Keyword(s):

Blended Cement ◽

Cementitious Materials ◽

Supplementary Cementitious Materials ◽

Partial Replacement ◽

Chloride Permeability ◽

Split Tensile Strength ◽

Micro Cracks ◽

Significant Strength ◽

Strength And Durability ◽

Durability Of Concrete

The life of the concrete is strongly influenced by durability parameters. The permeability is one of the main characteristics influencing the durability of concrete. The concrete is more permeable due to the ingress of water, oxygen, chloride, sulphate, and other potential deleterious substances. The durability of concrete is mainly affected by pore structure system of concrete and addingthe supplementary cementitious materials (SCM), such as fly ash, slag cement, and silica fume can be decrease permeability. Crystalline technology enhances the strength of concrete by filling the poresand micro-cracks with non-dissolvable substances. To study the efficiency of crystalline formation in concrete in terms of more permeable should be guaranteed through a specific technique.The effectiveness of crystalline waterproofing system with partial replacement cement by GGBS is studiedin terms of strength and durability. The performance of the two different types of crystalline waterproofing integral admixtures has been studied for compressive strength, Split tensile strength, workability, water permeability, Rapid chloride permeability test and porosity in this paper.The early strength increased in GGBS with crystalline admixture concretes compare to the control concrete. No significant strength reduction is observed in GGBS concretes with crystalline admixture when replaced with 20% and 40% of cement than control concrete.

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Utilization of tailings in cement and concrete: A review

Science and Engineering of Composite Materials ◽

10.1515/secm-2019-0029 ◽

2019 ◽

Vol 26 (1) ◽

pp. 449-464 ◽

Cited By ~ 3

Author(s):

Mifeng Gou ◽

Longfei Zhou ◽

Nathalene Wei Ying Then

Keyword(s):

Compressive Strength ◽

Cementitious Materials ◽

Solid Wastes ◽

Supplementary Cementitious Materials ◽

Cement Clinker ◽

Fine Aggregate ◽

Granulated Blast Furnace Slag ◽

Fine Aggregates ◽

Compressive Strength Of Concrete ◽

Cement And Concrete

AbstractOne of the advantages of cement and the cement concrete industry in sustainability is the ability to utilize large amounts of industrial solid wastes such as fly ash and ground granulated blast furnace slag. Tailings are solid wastes of the ore beneficiation process in the extractive industry and are available in huge amounts in some countries. This paper reviews the potential utilization of tailings as a replacement for fine aggregates, as supplementary cementitious materials (SCMs) in mortar or concrete, and in the production of cement clinker. It was shown in previous research that while tailings had been used as a replacement for both fine aggregate and cement, the workability of mortar or concrete reduced. Also, at a constant water to cement ratio, the compressive strength of concrete increased with the tailings as fine aggregate. However, the compressive strength of concrete decreased as the replacement content of the tailings as SCMs increased, even whentailings were ground into smaller particles. Not much research has been dedicated to the durability of concrete with tailings, but it is beneficial for heavy metals in tailings to stabilize/solidify in concrete. The clinker can be produced by using the tailings, even if the tailings have a low SiO2 content. As a result, the utilization of tailings in cement and concrete will be good for the environment both in the solid waste processing and virgin materials using in the construction industry.

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Study of Hydration and Microstructure of Mortar Containing Coral Sand Powder Blended with SCMs

Materials ◽

10.3390/ma13194248 ◽

2020 ◽

Vol 13 (19) ◽

pp. 4248

Author(s):

Xingxing Li ◽

Ying Ma ◽

Xiaodong Shen ◽

Ya Zhong ◽

Yuwei Li

Keyword(s):

Compressive Strength ◽

Portland Cement ◽

Silica Fume ◽

Dilution Effect ◽

Cementitious Materials ◽

Supplementary Cementitious Materials ◽

Limestone Powder ◽

Chemical Effect ◽

Granulated Blast Furnace Slag ◽

Coral Sand

The utilization of coral waste is an economical way of using concrete in coastal and offshore constructions. Coral waste with more than 96% CaCO3 can be ground to fines and combined with supplementary cementitious materials (SCMs) such as fly ash, silica fume, granulated blast furnace slag in replacing Portland cement to promote the properties of cement concrete. The effects of coral sand powder (CSP) compared to limestone powder (LSP) blended with SCMs on hydration and microstructure of mortar were investigated. The result shows CSP has higher activity than LSP when participating in the chemical reaction. The chemical effect among CSP, SCMs, and ordinary Portland cement (OPC) results in the appearance of the third hydration peak, facilitating the production of carboaluminate. CSP-SCMs mortar has smaller interconnected pores on account of the porous character of CSP as well as the filler and chemical effect. The dilution effect of CSP leads to the reduction of compressive strength of OPC-CSP and OPC-CSP-SCMs mortars. The synergic effects of CSP with slag and silica fume facilitate the development of compressive strength and lead to a compacted isolation and transfer zone (ITZ) in mortar.

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Suitability of Cordia millenii Ash Blended Cement in Concrete Production

International Journal of Engineering Research in Africa ◽

10.4028/www.scientific.net/jera.22.59 ◽

2016 ◽

Vol 22 ◽

pp. 59-67 ◽

Cited By ~ 11

Author(s):

Olusola Emmanuel Babalola ◽

Paul O. Awoyera

Keyword(s):

Compressive Strength ◽

Setting Time ◽

Blended Cement ◽

Cementitious Materials ◽

Strength Properties ◽

Supplementary Cementitious Materials ◽

Sieve Analysis ◽

Concrete Production ◽

Alternative Materials ◽

Concrete Control

Supplementary cementitious materials are most needed to enhance a sustainable development in poor communities. It is pertinent to investigate the suitability of such alternative materials for construction. The present study evaluates the strength characteristics of concrete made with varied proportion of Cordia millenii ash blended with Portland cement. Chemical composition of Cordia millenii and the setting time when blended with cement was determined. Other laboratory tests performed on Cordia millenii blended cement include: sieve analysis and specific gravity. Five replacement percentages of Cordia millenii (5%, 10%, 15%, and 20%) were blended with cement in concrete. Control specimens were also produced with only cement. Tests to determine the workability, air entrained, bulk density and compressive strength properties of the concrete were also conducted. Results obtained revealed that optimum Cordia millenii mix is 10%, which yielded the highest density and compressive strength in the concrete.

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Sol Gel Characterization of Nano Kaolin

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.856.285 ◽

2013 ◽

Vol 856 ◽

pp. 285-289

Author(s):

M.S. Muhd Norhasri ◽

M.S. Hamidah ◽

A.G. Abd Halim ◽

A. Mohd Fadzil

Keyword(s):

Particle Size ◽

Surface Area ◽

Sol Gel ◽

High Energy ◽

Cementitious Materials ◽

Supplementary Cementitious Materials ◽

Process Time ◽

Strength And Durability ◽

Clay Kaolin

Nano kaolin is product from kaolin also known as white clay. Kaolin was established as supplementary cementitious materials in concrete. The inclusion of kaolin in concrete enhances strength and durability properties and prolongs concrete life span. In this research, nanokaolin will be develop by using sol gel technique by that involves high energy milling. The process of milling been influenced by time of milling, ball and jar type. Ceramic type Zirconia (Zi) is been used as jar and ball type in this process. Time of milling was set from four (4) hours and one (1) days. Sample will be analyse by using particle size analyser to see the particle size and surface area of kaolin. From the result shows the optimum milling period for nanokaolin is one day base on particle size compare to 4 hours. Furthermore, one day milling produces a massive increment of surface area compare to others. In conclusion, one day can be considered as the optimum cycle time in the production of nano kaolin.

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Modified Plasters for Restoration and Finishing Works

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.923.42 ◽

2014 ◽

Vol 923 ◽

pp. 42-47 ◽

Cited By ~ 11

Author(s):

Myroslav Sanytsky ◽

Tetiana Kropyvnytska ◽

Roman Kotiv

Keyword(s):

Compressive Strength ◽

Chemical Composition ◽

Cementitious Materials ◽

Quality Parameters ◽

Supplementary Cementitious Materials ◽

Cement Matrix ◽

Hydration Products ◽

High Quality ◽

Physico Chemical ◽

White Portland Cement

The paper is devoted to the research and development of modified plasters for restoration and finishing works based on decorative multicomponent cements containing white Portland cement and supplementary cementitious materials (silica fume, metakaolin and fine ground limestone). This cements are similar to Roman cement by their chemical composition. The use of optimal granulometry of decorative multicomponent cements provide directed formation of microstructure of the cement matrix with the formation of stable hydration products. Compositions of modified plasters by the criterions of workability and compressive strength were designed. Physico-chemical modification of plaster by complex air-entraining admixture allows to obtain high-quality modified plasters with improved quality parameters.

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