I’ve seen so many conflicting opinions about what mortar to use, ranging from Lime mortar to portland and sand, and anything in between. Could you help to clear up some of the confusion around suitable material for the repair to my wall? The mortar is currently very cracked, with many ...
The use of a geopolymeric mortar with a binder/sand ratio of 1:4 meets minimum workability conditions for patch repair using the hand placement technique. The geopolymeric mortar shows a high unrestrained shrinkage behavior. However, the reduction of the alkaline activator/binder mass ratio to 80%...
The mortar system is preferably used for repair and refurbishment and suited for the professional as well as do-it-yourself use. The inventive mortar system is a ready-to-use system with particularly easy handling. It is particular suitable for concrete and mortar repair work, such as filling ...
and repair of old buildings. It was generally made with a mix ratio of about 1:3 (lime:sand), and sets bycarbonation. Pozzolans such as volcanic ash or ground clay bricks, and tiles were often added to give a higher strength.
Colour Grey Component Portland cement, non-reactive aggregate, graded sand, polymer powder and other chemical additives Max. aggregate size 4.5 mm Water demand Approx. 15 – 17% or 6 – 6.8 L /40 kg bag Density 1.6 kg/L (dry) 2 kg/L (wet) for 16% water demand Pot lif...
The thin section was therefore subjected to ‘point counting’ to quantify the limestone present within the aggregate, enabling correction of the mix proportions and avoiding over estimation of the binder. This gave an ‘effective’ binder content and the repair mix design could then be adjusted....
We focused on the cement paste because we assume the sand in the mortar to be inert. Hydrated cement paste was modelled to be in equilibrium with increasing amounts of either the NaCl or the NaCl+KOH solution. We simulated the conditions in the mortar towards the exposed surface by ...
The choice of specific and appropriate materials to make a repair mortar has indeed not only to consider what is available locally [2], but also the current conditions of both the building and the masonry unit as well as the surrounding environment and climate [3]. The optimum combination of...
Short, N.; Purkiss, J.; Guise, S. Assessment of fire damaged concrete using colour image analysis.Constr. Build. Mater.2001,15, 9–15. [Google Scholar] [CrossRef] Colombo, M.; Felicetti, R. New NDT techniques for the assessment of fire-damaged concrete structures.Fire Saf. J.2007,42...
Menéndez, E.; Vega, L.; Andrade, C. Method to Evaluate the Residual Strength in Concrete Elements Exposed to Fire Using Physic-Chemical and Microstructural Parameters. InConcrete Repair, Rehabilitation and Retrofitting III.; Alexander, M.G., Beushausen, H.-D., Dehn, F., Moyo, P., Eds...