Proyecto Noupoort Wind Farm, Northern Cape


Yarda	Noupoort Wind Farm
Ubicación	Northern Cape, República de Sudáfrica
Subcategoría	PLANTA DE ENERGÍA
Construido en	2015
Abierto en	2016
Aplicación	Concrete mix for base units at noupoort wind farm
Fecha de inicio y finalización	2015/2016
Tipo de aplicación	Aditivos
Empresa contratista	Murray & Roberts
Empresas instaladoras	Murray & Roberts
Distribuidor de MAPEI	Mapei South Africa
Créditos	Mapei South Africa
Gestor de proyectos	Marritus Bez & Cyril Atwell
Descripción	Following the severe electricity supply shortages in the past 5 years, South Africa has become a suitable environment for the supply of privately generated sustainable alternative energies. One such project was the Noupoort Wind Farm. The civil contractor for the construction of 35 concrete bases was Murray & Roberts Infrastructure, a division of Murray & Roberts Holdings who constructed the bases for Mainstream who was the client. The location of the project is +/- 10km south of Noupoort in Northern Cape, South Africa. Mapei South Africa was invited to submit concrete admixtures and mix designs for the project, and competed against other suppliers, BASF, Chryso and Sika. Working closely with the Group Research and thereafter the Site Manager, Mapei Supplied a solution which enabled the contractor to overcome various issues including •The cost effective use of high fly ash concrete to achieve workable concrete with high strength and durability. We achieved this through extensive testing with various admixtures and finally found the Dynamon SR3 to be the most effective. •Following implementation on site, we found that there was variability in the aggregates produced on site. We assisted the Murray and Roberts concrete technologists to achieve a more robust mixture that could be pumped without risk of pump blockages, and retain workability for the duration of the placement process. •Another challenge was the periodic formation of settlement cracks on concrete plinths. The engineers specified a blend of Prosfas, water and cement mix to be coated over and into the cracks, providing an innovative solution for a site problem. The following products were supplied and used on this project: •Dynamon SR3 – The use of Dynamon SR3 was to increase the plastic rheology and compressive strengths as well as reducing mixing water. Reducing the effects of bleeding and plastic shrinkage while retarding the initial set of the cement to ensure proper placement of the concrete •Prosfas – It is a blend of silicates in water solution with low viscosity and therefore high penetration properties. It was chosen to penetrates to a depth of several centimeters and when dried, it improves the cohesion of cementitious surfaces

Yarda

Noupoort Wind Farm

Ubicación

Northern Cape, República de Sudáfrica

Subcategoría

PLANTA DE ENERGÍA

Construido en

2015

Abierto en

2016

Aplicación

Concrete mix for base units at noupoort wind farm

Fecha de inicio y finalización

2015/2016

Tipo de aplicación

Aditivos

Empresa contratista

Murray & Roberts

Empresas instaladoras

Murray & Roberts

Distribuidor de MAPEI

Mapei South Africa

Créditos

Mapei South Africa

Gestor de proyectos

Marritus Bez & Cyril Atwell

Descripción

Following the severe electricity supply shortages in the past 5 years, South Africa has become a suitable environment for the supply of privately generated sustainable alternative energies. One such project was the Noupoort Wind Farm. The civil contractor for the construction of 35 concrete bases was Murray & Roberts Infrastructure, a division of Murray & Roberts Holdings who constructed the bases for Mainstream who was the client. The location of the project is +/- 10km south of Noupoort in Northern Cape, South Africa.
Mapei South Africa was invited to submit concrete admixtures and mix designs for the project, and competed against other suppliers, BASF, Chryso and Sika.

Working closely with the Group Research and thereafter the Site Manager, Mapei Supplied a solution which enabled the contractor to overcome various issues including
•The cost effective use of high fly ash concrete to achieve workable concrete with high strength and durability. We achieved this through extensive testing with various admixtures and finally found the Dynamon SR3 to be the most effective.
•Following implementation on site, we found that there was variability in the aggregates produced on site. We assisted the Murray and Roberts concrete technologists to achieve a more robust mixture that could be pumped without risk of pump blockages, and retain workability for the duration of the placement process.
•Another challenge was the periodic formation of settlement cracks on concrete plinths. The engineers specified a blend of Prosfas, water and cement mix to be coated over and into the cracks, providing an innovative solution for a site problem.

The following products were supplied and used on this project:
•Dynamon SR3 – The use of Dynamon SR3 was to increase the plastic rheology and compressive strengths as well as reducing mixing water. Reducing the effects of bleeding and plastic shrinkage while retarding the initial set of the cement to ensure proper placement of the concrete
•Prosfas – It is a blend of silicates in water solution with low viscosity and therefore high penetration properties. It was chosen to penetrates to a depth of several centimeters and when dried, it improves the cohesion of cementitious surfaces

Noupoort Wind Farm

Construcción

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