By Ed Misajet
Concrete: Cement Substitutes - GGBS, PFA and more
Concrete made with GGBS cement sets more slowly than concrete made with ordinary Portland cement, depending on the amount of GGBS in the cement mix, but also continues to gain strength over a longer period leading to improved overall durability and life expectancy. Silica fume. Silica fume is a by-product from the manufacture of silicon.
A Study on Investigation of Micro Silica as Partial Replacement of
strength and durable properties of concrete having Micro silica as partial replacement to cement . They used the concrete mix design using IS 10262-2009 of M25 mix with different proportions with 3%, 5%, 7%, 9%, 11%, 13% and 15%. They concluded that optimum results are obtained at replacement of 11%. 1.1 Micro silica
Experimental Study On Partial Replacement Of Cement With Fly
By using these materials we have find out strength on a concrete by adding partial replacement on cement with fly ash and complete replacement of sand with m sand. Abstract:- Experimental Study, Partial Replacement, Cement, Fly Ash, Sand, M sand 1.INTRODUCTION Concrete is the most widely used construction material in civil engineering industry ...
Use of Limestone Fines to Reduce Permeability of Concrete for Durability
Abstract: Traditional ly, the use of limestone fines (LF) in concrete is to replace either part of the cement or part of the fine aggregate, notwithstanding this, the authors are advocat ing that the LF should be better used as cement paste replacement, which is expected to improve the durability and sustainability of concrete at the same time.
What is the best replacement for cement in Concrete?
Concrete without cement is possible by the use of fly ash. The Green alternative to use of cement is fly ash which has same properties as that of cement both physically and chemically.
performance of concrete by replacement of sand by steel dust
of sand is replaced by quarry rock dust in concrete Rajamane et al 2003 studied the properties of high performance concrete with partial replacement of cement by GGBS They found that the compressive strength of concrete increased by 102 MPa at 28 days age compared to conventional concrete Ilangovan et al 2008 studied. Information
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Partial Replacement of Cement with Metakaolin in High
find the optimum partial replacement of cement with metakaolin from selected dosages. The strength was found to increase by 6% when 10% by weight of cement was replaced with metakaolin. I. INTRODUCTION Cement concrete is the most extensively used construction material. Maintenance and repair of reinforced concrete
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15 Factors Affecting Durability of Concrete
Quantity of cement used in concrete mix will also be a factor affecting durability of concrete. If cement content used is lower than the required, then water cement ratio becomes reduced and workability also reduced. Adding more water to this mix results in formation capillary voids which will make concrete as permeable material.
Use of Rice Husk Ash in Concrete: Literature Review
Bolla et al (2015) [India] carried out a research on the effect of partial replacement of cement with RHA on concrete. The cement has been replaced by rice husk ash accordingly in the range of 0%, 5%, 10%, 15%, and 20% by weight of cement for mix.
Mechanical properties and Durability Properties of Concrete
strength and flexural strength with 30% replacement are 33.69% and 13.09% more than conventional concrete 3. It was found that sludge based concrete when immersed in Acid solutions has better properties with 10% replacement of concrete. 2.2 Structural Performance of concrete by Partial Replacement of Cement with Paper Waste
Durability Performance of Bridge Concretes, Part II
ABSTRACT: A study was undertaken on the durability of high-strength concrete (HSC) produced using locally available materials in the State of Missouri. Thirty-six (36) different mixtures were produced as HSC. 30 % fly ash replacement by cement weight was
“Ground Granulated Blast Slag (GGBS) In Concrete – A Review”
GGBS concrete gains strength more steadily than equivalent concrete made with Portland cement. For the same 28 day strength, a GGBS concrete will have lower strength at early ages but its long term strength will be greater, the reduction in early strength will be most noticeable at high GGBS levels and low temperatures.
Durability of Low Cost High Performance Fly Ash Concrete
Durability of Low Cost High Performance Fly Ash Concrete A. Camões1, B. Aguiar1, S. Jalali1 1University of Minho, Department of Civil Engineering, Campus de Azurém, 4800-058 Guimarães, Portugal KEYWORDS: durability, high performance concrete, fly ash, low cost
Durability and strength characteristics of high-strength
High VPP replacement rates with 20% cement mass decreased the properties of hardened concrete. 7. Adding PFs above 0.35% and 0.50% of concrete volume to V HSC F led to reduced compressive strength. However, indirect tensile and flexural strength improved with increased PF content. 8.
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Low CO2 Concrete | U.S. Concrete
It could therefore be used in concrete, in combination with Portland cement, as part of blended cement. Concrete containing ground granulated slag develops strength over a longer period, leading to reduced permeability and more durability properties.
(PDF) Durability Studies on Concrete with Hypo Sludge as Partial Replacement of Cement
This paper summarizes the research work on the properties of hypo sludge when used as partial replacement for Ordinary Portland Cement (OPC) in concrete. OPC was replaced with hypo sludge by weight at 0%, 5%, 10%, 15%, 20% and 25%. 0% replacement
Durability of Concrete made with Marble Dust as partial
The test results show that the addition of marble dust as partial replacement of cement increases the durability of concrete against sulphate attack. By 10% replacement of cement with marble dust for both M25 & M30 grades produces more durable concrete when compared in terms of water absorption.
Development and freeze-thaw durability of high flyash-content
Abstract. Objectives were to investigate the effects on concrete strength, drying shrinkage, freeze-thaw durability, and air-void system parameters of replacing various amounts of portland cement with different types of fly ash and to compare selected characteristics of such fly-ash concretes and fly-ash concretes containing a high-range water-reducing admixture to those of a control mixture.
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Heat resistant concrete
At higher temperatures (above about 800 degrees F), high-heat-resistant concrete is generally needed. Light-weight aggregates have proven to be more heat resistant and so that is the first step--use lightweight. When temperatures get extremely high, (above 1000 degrees F), calcium aluminate cement produces a fire-resistant concrete.
Cement Combinations for Durable Concrete
Secondly concrete samples with 10%, 40% and 60% replacement of cement by fly ash were produced, using an appropriate amount of (super)plasticizer to obtain good workability. The compressive strength of the mixes at young age decreased with increasing cement replacement level.
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Concrete Mixes 101: Which Mix Should You Use for Your Project
Use Sakrete 5000 Plus High Strength Concrete Mix for repair and building projects where concrete thickness is 2 inches or more and demands excellent strength. It is a professional-grade blend of portland cement, sand and gravel that is formulated for superior durability.
Durability Studies on Glass Fiber Reinforced Concrete
Abstract. In the present experimental study, glass fibers were used in varying dosages of 0.5, 1.0, and 1.5% of cement content (by weight) as partial cement replacement to cement in concrete mix. The effect of different dosage of glass fibers on the bond strength between steel and concrete in reinforced concrete was investigated.
DURABILITY PROPERTIES OF BANANA FIBRE REINFORCED FLY ASH CONCRETE
2017-11-22 · replacement of cement with fly ash, which will result to a denser matrix as solution to internal degradation of plant fibres in concrete. Anowai and Job  confirmed that partially replacing cement with fly ash reduced the alkalinity of banana fibre reinforced concrete. Fly ash reduces the cement requirement for the
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