High-volume natural volcanic pozzolan and limestone powder as partial replacements for portland cement in self-compacting and sustainable concrete

Download

index.pdf

Date

2014-01-01

Author

Celik, K
Jackson, MD
Mancio, M
Akgül, Çağla
Emwas, A-H
Mehta, PK
Monteiro, PJM

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

605
views

0
downloads

A laboratory study demonstrates that high volume, 45% by mass replacement of portland cement (OPC) with 30% finely-ground basaltic ash from Saudi Arabia (NP) and 15% limestone powder (LS) produces concrete with good workability, high 28-day compressive strength (39 MPa), excellent one year strength (57 MPa), and very high resistance to chloride penetration. Conventional OPC is produced by intergrinding 95% portland clinker and 5% gypsum, and its clinker factor (CF) thus equals 0.95. With 30% NP and 15% LS portland clinker replacement, the CF of the blended ternary PC equals 0.52 so that 48% CO2 emissions could be avoided, while enhancing strength development and durability in the resulting self-compacting concrete (SCC). Petrographic and scanning electron microscopy (SEM) investigations of the crushed NP and finely-ground NP in the concretes provide new insights into the heterogeneous fine-scale cementitious hydration products associated with basaltic ash-portland cement reactions.

Subject Keywords

General Materials Science, Building and Construction

URI

https://hdl.handle.net/11511/37244

Journal

CEMENT & CONCRETE COMPOSITES

DOI

https://doi.org/10.1016/j.cemconcomp.2013.09.003

Collections

Department of Civil Engineering, Article

Suggestions

OpenMETU
Core

Synthesis of special cement with fluidised bed combustion ashes Selçuk Yüce, Nihal; Soner, I.; Selçuk, Emre (Thomas Telford Ltd., 2010-04-01) Fluidised bed combustion (FBC) ashes containing a significant amount of free calcium oxide and calcium sulfate in addition to valuable inorganic acidic oxide ingredients such as silicon oxide, ferric oxide and aluminium oxide can be utilised as potential raw materials in the production of non-expansive belite-rich calcium sulfoaluminate cement, which is one of the special cement types having performance characteristics similar to those of ordinary Portland cement in addition to having lower energy requireme...
Long-term mechanical properties of cellulose fibre-reinforced cement mortar with diatomite Ince, Ceren; Derogar, Shahram; Ball, Richard James; Ekinci, Abdullah; YÜZER, Nabi (Thomas Telford Ltd., 2019-09-01) This paper presents a study investigating the long-term mechanical properties of cellulose fibre-reinforced cement mortars incorporating diatomite as a replacement material for quartz sand. Important properties including mass, compressive and flexural strength, sorptivity, water penetration depth and porosity have been rigorously investigated. Significant findings demonstrated that increasing the replacement level of diatomite resulted in a systematic decrease in the final mass of cellulose fibre-reinforced...
Effect of material characteristics on the properties of blended cements containing high volumes of natural pozzolans Turanlı, Lutfullah; Uzal, B; Bektas, F (Elsevier BV, 2004-12-01) The effect of three different natural pozzolans from Turkish deposits on the properties of blended cements produced by intergrinding cement clinker with a high volume of natural pozzolan (55 wt.% of the cementitious material) was investigated. The particle size distribution of blended cements, setting time, heat of hydration, and compressive strength of blended cement mortars were determined. Experimental results showed that the hardness of the pozzolanic material strongly influenced the particle size distr...
Laboratory production of calcium sulfoaluminate cements with high industrial waste content Canbek, Ogulcan; Shakouri, Sahra; Erdoğan, Sinan Turhan (Elsevier BV, 2020-02-01) A drawback of conventional calcium sulfoaluminate (CSA) cement production is the use of the costly raw material bauxite as a source of alumina to form the main clinker phase ye'elimite. Replacement of bauxite with industrial wastes can benefit CSA cements economically and environmentally. This study demonstrates the use of high amounts of red mud, a sulfate-rich/high-lime fly ash, and desulfogypsum as raw materials in producing CSA clinkers and cements with better mechanical performances than an all-natural...
Synthesis of copolymers of methoxy polyethylene glycol acrylate and 2-acrylamido-2-methyl-1-propanesulfonic acid: Its characterization and application as superplasticizer in concrete Buyukyagci, Arzu; Tuzcu, Goezde; Aras, Leyla (Elsevier BV, 2009-07-01) Water-soluble copolymers of methoxy polyethylene glycol acrylate (mPEGA) and 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) were synthesized by free radicalic polymerization and evaluated as slump-retaining dispersant for cement particles. The slump-retaining effect of the synthesized copolymers was studied in terms of reaction pH, composition, and molecular weight of mPEG side chains. mPEG grafted copolymers (mPEGA-co-AMPS) were characterized by FTIR, H-1 NMR. In this study, dilute solution viscometry...

Citation Formats

K. Celik et al., “High-volume natural volcanic pozzolan and limestone powder as partial replacements for portland cement in self-compacting and sustainable concrete,” CEMENT & CONCRETE COMPOSITES, pp. 136–147, 2014, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/37244.