alessandra mendes fire resistance of slag blended cements dr congo mining company

Fire resistance of concrete made with Portland and slag ...

Fire resistance of concrete made with Portland and slag blended cements . By Alessandra Ferreira Bragança Mendes. Abstract. The fire resistance of concrete has become a major design concern due to various high profile fire incidents such as the collapse of the Twin Towers (September 11), USA and several tunnel fires around the world. ...

作者: Alessandra Ferreira Bragança Mendes

(PDF) Fire resistance of fly ash-based geopolymer concrete ...

Fire resistance of fly ash-based geopolymer concret e blended with calcium aluminate cement C ao Proc. 1 st International Conference on Structural Engin eering Research (iCSER2017) Page 219

Global Slag Knowledge Base

Paper 18 Fire resistance of slag blended cements: Alessandra Mendes: Monash University. Paper 19 Mixture design and engineering properties of concrete made of new slag ash (paper): Chao-Lung Hwang: National Taiwan University of Science and Technology

Editorial - Australasian (iron steel) Slag Association

Fire Resistance of Slag Blended Cements Alessandra Mendes reported to the Technical Committee of Australasian (iron and steel) Slag Association on the early stages of her research into the Fire Resistance of Concretes made with slag-blended cements in 2008. At the 6th Global Slag Conference and Exhibition

Long-term progressive deterioration following fire ...

Mar 11, 2008  The normal practice of repairing fire-damaged concrete structures is to remove the visibly damaged portions and restore them with new concrete. However, little attention has been given to the long-term performance of fire exposed concrete which is not removed from the structure. This paper addresses this issue. Ordinary Portland cement (OPC) pastes, when

Cited by: 28

Long-term progressive deterioration following fire ...

Long-term progressive deterioration following fire exposure of OPC versus slag blended cement pastes By Alessandra Mendes, Jay G. Sanjayan and Frank Collins No static citation data No static citation data Cite

(PDF) Heat resistance of portland cements

Heat resistance of portland cements. 123. ... Fire Resistance of Concretes with Blended Cements. ... were prepared binding compositions consisting of cement with slag (10, 20, 30%), limestone (10 ...

Study of rehydration of Portland blast-furnace slag cement ...

Researchers have studied the dehydration and rehydration of Portland cement. In this study, hydrated cement pastes (HCPs) prepared from Portland blast furnace slag cement (PBFSC), were heat treated at 700ºC and 900ºC and used in the preparation of rehydrated cement powders in air (RCPs-air) and rehydrated cement paste (RCPs) with water/cement ratios (w/c) of 0.3

and - Ecocem Next Generation Cements

presented by slag blended cements after exposure to high temperatures Keywords Cement Slag . Compressive strength . High temperatures . Thermogravimetric analysis A. Mendes (18!) . J. Sanjayan . F. Collins Department ofCivil Engineering, Monasb Unive"ilY, Wellington Road, Clayton, VIC 3S00, Australia e-mail: [email protected]

Review of 6th Global Slag Conference 2010

However, the winner of the best presentation award was Alessandra Mendes of Monash University, for her paper on the fire-resistance of slag blended cements. Field trip. In all, 40 delegates from the event took part in a post-conference field trip to BlueScope Steel’s Port Kembla works, where they saw slag granulation and a BF slag pour.

Editorial - Australasian (iron steel) Slag Association

Fire Resistance of Slag Blended Cements Alessandra Mendes reported to the Technical Committee of Australasian (iron and steel) Slag Association on the early stages of her research into the Fire Resistance of Concretes made with slag-blended cements in 2008. At the 6th Global Slag Conference and Exhibition

Long-term progressive deterioration following fire ...

Long-term progressive deterioration following fire exposure of OPC versus slag blended cement pastes By Alessandra Mendes, Jay G. Sanjayan and Frank Collins No static citation data No static citation data Cite

and - Ecocem Next Generation Cements

presented by slag blended cements after exposure to high temperatures Keywords Cement Slag . Compressive strength . High temperatures . Thermogravimetric analysis A. Mendes (18!) . J. Sanjayan . F. Collins Department ofCivil Engineering, Monasb Unive"ilY, Wellington Road, Clayton, VIC 3S00, Australia e-mail: [email protected]

ecocem.ie

AIessandra Mendes'Jay G. Sanjayan . Frank Collins Long-termprogressive deterioration following fire exposure of ope versus slag blended cement pastes Coostituentlpropeny (%) OPe Slag SiC, 19.90 32.5 AhO) 4.70 13 FC20j 3.38 0.22 MgO 1.30 5.47 Cao 63.93 42.1 Na,O 0.17 0.21 110, 0.245 1.08 K,O 0.446 0.25 MnO 0.079 5.47 P20 j 0.063 Bd S03 254 4.1 ...

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INTERNATIONAL

Alessandra Mendes gave a presentation at the February Technical Committee Meeting [NEWSBRIEFS] on the Fire Resistance of Concrete made with Slag Blended Cements. Alessandra is a researcher in the School of Civil Engineering – Monash University. This presentation will be reported on in a future issue of Connections

Cement and Concrete Composites - ScienceDirect

A. Mendes, J. Sanjayan, F. CollinsLong-term progressive deterioration following fire exposure of OPC versus slag blended cement pastes Mater Struct, 42 (2009), pp. 95-101 Google Scholar

Effects of slag and cooling method on the ... - DeepDyve

Aug 31, 2010  In the present work OPC and OPC/slag concretes were exposed to elevated temperatures, 400 and 800°C. The critical temperature of 400°C has been reported for OPC paste. Above 400°C, the paste hydrate Ca(OH)2 dehydrates into CaO causing the OPC paste to shrink and crack. After cooling and in the presence of air moisture, CaO rehydrates into

An investigation on very high volume slag pastes subjected ...

Mendes et al. demonstrated that the damage (destroyed specimens) due to elevated temperatures is reduced by blending PC with slag provided that the slag blended cement achieved a significant and beneficial reduction of the amount of Ca(OH) 2.The DTG results showed that the decomposition peak of PC at 500 °C, which is related to Ca(OH) 2, was four times greater than the 65% slag

Scientific Academic Publishing

Mendes, A., Sanjayan, J.G., Collins, F.G., "Effects of slag and cooling method on the progressive deterioration of concrete after exposure to elevated temperatures as in a fire event", Materials and Structures, published Online First, 2010, DOI

MATERIALS AND STRUCTURES - hps.biblos.pk.edu.pl

95 Long-term progressive deterioration following fire exposure of OPC versus slag blended cement pastes / ALESSANDRA MENDES, JAY G. SANJAYAN and FRANK COLLINS 103 A linguistic model for evaluating cement strength / B. TUTMEZ and A. DAG 113 UHPFRC tensile creep at early age / A. KAMEN, E. DENARIÉ, H. SADOUKI and E. Brühwiler

Blended Cement Pastes and Mortar Exposed to Elevated ...

Mendes et al. [15] used slag at 35%, 50% and 65% of replacement OPC and determined the residual strength after exposing to 100°C to 800°C. It was found that the samples with slag showed less dam-age under elevated temperatures. Although most research has been conducted to study properties of blended cement, limited research

Microscopic Mechanism of the Diffusivity of Concrete ...

Use concrete specimens with different mix proportions to conserve them for 90d taking into account the influence of mineral admixture material---fly ash. Then adopts the RCM test method to measure the rapid diffusivity of chloride ion of concrete and observes the microstructure of the cement paste using the SEM (scanning electron microscopy), aiming to study the impact of fly

Effect of High Temperatures on the Microstructure of ...

The microstructural and compositional changes within the cement paste exposed to high temperatures were monitored by XRD, FTIR, TGA/DTA and SEM techniques to understand the nature of decomposition of C-S-H gel and the associated physicomechanical properties of thermally damaged cement paste. OPC paste (w/c ratio 0.27) was hydrated for 28 days then

Effects of slag and cooling method on the ... - DeepDyve

Aug 31, 2010  In the present work OPC and OPC/slag concretes were exposed to elevated temperatures, 400 and 800°C. The critical temperature of 400°C has been reported for OPC paste. Above 400°C, the paste hydrate Ca(OH)2 dehydrates into CaO causing the OPC paste to shrink and crack. After cooling and in the presence of air moisture, CaO rehydrates into

INTERNATIONAL

Alessandra Mendes gave a presentation at the February Technical Committee Meeting [NEWSBRIEFS] on the Fire Resistance of Concrete made with Slag Blended Cements. Alessandra is a researcher in the School of Civil Engineering – Monash University. This presentation will be reported on in a future issue of Connections

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White Silica Sand S25 Supplier In United Arab Emirates

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Scientific Academic Publishing

Mendes, A., Sanjayan, J.G., Collins, F.G., "Effects of slag and cooling method on the progressive deterioration of concrete after exposure to elevated temperatures as in a fire event", Materials and Structures, published Online First, 2010, DOI

MATERIALS AND STRUCTURES - hps.biblos.pk.edu.pl

95 Long-term progressive deterioration following fire exposure of OPC versus slag blended cement pastes / ALESSANDRA MENDES, JAY G. SANJAYAN and FRANK COLLINS 103 A linguistic model for evaluating cement strength / B. TUTMEZ and A. DAG 113 UHPFRC tensile creep at early age / A. KAMEN, E. DENARIÉ, H. SADOUKI and E. Brühwiler

Effect of High Temperatures on the Microstructure of ...

The microstructural and compositional changes within the cement paste exposed to high temperatures were monitored by XRD, FTIR, TGA/DTA and SEM techniques to understand the nature of decomposition of C-S-H gel and the associated physicomechanical properties of thermally damaged cement paste. OPC paste (w/c ratio 0.27) was hydrated for 28 days then

SP-326: Durability and Sustainability of Concrete ...

Drying and Autogenous Shrinkage Evolution of a Blended CSA-Portland Cement Concrete. Authors: Davide Sirtoli, Pietro Lura, Maurizio Marchi, and Sergio Tortelli. SP-326—31. Corrosion-Resistant Cements Based on Sulfated Clinkers. Authors: S.V. Samchenko, O.V. Zemskova, and D.A. Zorin. SP-326—32

Blended Cement Pastes and Mortar Exposed to Elevated ...

Mendes et al. [15] used slag at 35%, 50% and 65% of replacement OPC and determined the residual strength after exposing to 100°C to 800°C. It was found that the samples with slag showed less dam-age under elevated temperatures. Although most research has been conducted to study properties of blended cement, limited research

Microscopic Mechanism of the Diffusivity of Concrete ...

Use concrete specimens with different mix proportions to conserve them for 90d taking into account the influence of mineral admixture material---fly ash. Then adopts the RCM test method to measure the rapid diffusivity of chloride ion of concrete and observes the microstructure of the cement paste using the SEM (scanning electron microscopy), aiming to study the impact of fly

An investigation on very high volume slag ... - DeepDyve

Jan 15, 2015  An investigation on very high volume slag pastes subjected to elevated temperatures Rashad, ... and such studies have indicated that the addition of slag improves fire resistance of paste/mortar/concrete. The heating regime and the PC replacement levels used in some of these studies have been summarized in Table 1 .

Mendes et al. [17 ...

An investigation on Portland cement replaced by high ...

Abstract Ground granulated blast-furnace slag (designated as GGBS) has been utilized as building material due to the environmental, economic and technical benefits. In this study, the possibility of improving compressive strength of high-volume GGBS (HVS) paste before and after being exposed to elevated temperatures using metakaolin (MK) in micro-size (mMK) has been

Influence of Nucleation Seeding on the Hydration ...

The fundamental chemical hydration process of portland cement and its main mineral component, tricalcium silicate, was studied by investigating the effects of various additives. A relatively small amount (1−4 wt %) of well-dispersed calcium silicate hydrate (C−S−H), a pure form of the main hydration product, significantly increases both the early hydration rate and the total amount of ...

Recent Studies of Sugarcane Bagasse Ash in Concrete and ...

Almir Sales, Soa Araujo Lima, Use of Brazilian sugarcane bagasse ash in concrete as sand replacement, Waste Management 2010, 30, 11141122 Aukkadet Reckpiboon, Weerachart Tangchirapat, Chai Jaturapitakkul, Strength, chloride resistance, and expansion of concretes containing ground bagasse ash, Construction and Building Materials, 2015, 101, 983989