search query: @instructor Punkki, Jouni / total: 6
reference: 3 / 6
« previous | next »
Author:Estellés Belenguer, Marta
Title:Economical and ecological optimization of binder system
Publication type:Final Project work
Publication year:2014
Pages:104 s. + liitt. 56      Language:   eng
Department/School:Yhdyskunta- ja ympäristötekniikan laitos
Main subject:Rakennusmateriaalitekniikka   (Rak-82)
Supervisor:Cwirzen, Andrzej
Instructor:Punkki, Jouni
OEVS:
Electronic archive copy is available via Aalto Thesis Database.
Instructions

Reading digital theses in the closed network of the Aalto University Harald Herlin Learning Centre

In the closed network of Learning Centre you can read digital and digitized theses not available in the open network.

The Learning Centre contact details and opening hours: https://learningcentre.aalto.fi/en/harald-herlin-learning-centre/

You can read theses on the Learning Centre customer computers, which are available on all floors.

Logging on to the customer computers

  • Aalto University staff members log on to the customer computer using the Aalto username and password.
  • Other customers log on using a shared username and password.

Opening a thesis

  • On the desktop of the customer computers, you will find an icon titled:

    Aalto Thesis Database

  • Click on the icon to search for and open the thesis you are looking for from Aaltodoc database. You can find the thesis file by clicking the link on the OEV or OEVS field.

Reading the thesis

  • You can either print the thesis or read it on the customer computer screen.
  • You cannot save the thesis file on a flash drive or email it.
  • You cannot copy text or images from the file.
  • You cannot edit the file.

Printing the thesis

  • You can print the thesis for your personal study or research use.
  • Aalto University students and staff members may print black-and-white prints on the PrintingPoint devices when using the computer with personal Aalto username and password. Color printing is possible using the printer u90203-psc3, which is located near the customer service. Color printing is subject to a charge to Aalto University students and staff members.
  • Other customers can use the printer u90203-psc3. All printing is subject to a charge to non-University members.
Location:P1 Ark Aalto     | Archive
Keywords:concrete
precast
alkali
fly ash
slag
limestone
plus-cement
water-glass
Abstract (eng): The environmental preservation and sustainable design has become an important issue for all industries, including the cement industry.
Cement industry contributes 5% of the CO2 emitted to the atmosphere every year.
For the production of 1 Tonne of Portland cement, 1 Tonne of carbon dioxide is emitted to the atmosphere.

The main purpose of this research was to optimize the utilisation of alternative to OPC cementious binders in the concrete production.
Five different kinds of binders were studied, including three ordinary mixes: Portland Cement, Portland Cement + Fly Ash, Plus-Cement + Fly Ash and two alkali-activated (AA) mixes: Portland Cement + Fly Ash + Blast Furnace Slag and Blast Furnace Slag + Limestone filler.

The study was done in two steps: Initial Laboratory Studies, where the binder mixes were optimized focusing on compressive strength and workability, and Final Laboratory Studies where chosen optimised earlier mixes were studied in more detail including also their ecology and economy.

The results showed that heat treated samples reached higher early compressive strength in comparison with no heat treated specimens.
Compressive strength in alkali-activated binders was higher due to the activation with water-glass.
The temperature of normal OPC concretes reached up to 55°C.
The AA concrete showed much lower temperatures, what is beneficial for thick and heavily restrained concrete elements (such as walls).

In the economical study, the ordinary mixes showed similar costs, while the alkali activated mixes were more expensive.
On the contrary, in the ecological analysis, the AA mixes showed much lower CO2 emissions.
ED:2014-09-15
INSSI record number: 49702
+ add basket
« previous | next »
INSSI