|
|
Plasticizers replacing lime in cement-lime mortars
Kajsrlík, Jan ; Bayer, Patrik (referee) ; Vyšvařil, Martin (advisor)
This bachelor thesis deals with the possibility of replacing lime in lime-cement plaster mortars. Considering commercially sold products, it explores the ways of replacing lime qualities by organic materials. Their influence on density, beam test and compression strength are researched; absorption capacity, frost resistance, capillary absorption coefficient are also assessed. Finally the organic materials are compared with the qualities of the lime-cement mortar
|
|
|
Preparation of high-valueable gypsum binder
Hájková, Iveta ; Gazdič,, Dominik (referee) ; Fridrichová, Marcela (advisor)
This work is oriented on the preparation of high-voluable sulphate binder based on gypsum waste. One of the potential mineral resources in Moravia is Pregips chemical gypsum, produced by Precheza. This is the raw material, which is characterized by high purity, high quality and is economically acceptable. Beta burned gypsum plaster from this, however, need to modify due to suppression of the high needs of water mixing, which is determined by its morphology. The need for mixing water has a large impact on the strength of gypsum binders. Therefore it is necessary to find a suitable additive, which would reduce the coefficient of water in the preparation of porridge normal consistency.
|
|
|
Binders on the base alumina cements and their properties
Morávková, Jitka ; Cupák, Petr (referee) ; Burianová, Klára (advisor)
The Bachelor Thesis describes chemical and mineralogical structure, as well as alumina cements manufacture and some of their physical and techno-logical properties. It takes accelerators or plasticizers induced changes by search method. An illustrative laboratory measurement of mixture with accel-erator and plasticizer is complementary to theoretical knowledge in fluidity, air permeability and strength of mixture with aluminium silicate cement binder.
|
|
|
High-valueable gypsum binder based on secondary raw materials
Rybová, Alexandra ; Dvořák,, Karel (referee) ; Fridrichová, Marcela (advisor)
The thesis is oriented on preparation of high – valuable gypsum binder using secondary raw materials with emphasis on technological properties and their improvement by aplication of selected modifier aditives. The first part of the task is dedicated to a teoretical knowledge in the field of gypsum binders, especially to the raw materials, properties and possibilities of utilization. Second part is focused on experimental works that test properties of gypsum and effectivness of selected modifier aditives.
|
guest ::
