Thaumasite is normally formed at temperatures below ca. 15ëC and preferably at 0±5ëC, which seems to be the optimal temperature […]
Possibility of thaumasite formation under pressure at ambient and higher temperatures Read Post »
Widespread international use is made of these materials, e.g. as grouts and mortar patches for finish and repair work and
Polymer-modified cement, mortar and concrete Nature of systems Read Post »
Mechanisms The development of microstructure is considered to proceed by a basic three- step process (Isenburg, 1974; Ohama, 1987). Immediately
Polymer-modified cement, mortar and concrete Microstructure development Read Post »
Stiffness It is generally considered (Ohama, 1998) that the addition of polymer will reduce the stiffness of the PMC and will
Polymer-modified cement, mortar and concrete Mechanical properties Read Post »
Water absorption When comparing PMC of given type produced at constant workability, it is found that the water absorption and permeability
Polymer-modified cement, mortar and concrete Durability Read Post »
Instead of plastering entire surface of the masonry, special mortar finishing work is done to the exposed joints. This is
For long spans or heavy loadings that exceed the capacity of standard rolled shapes, plate girders can be used. Plate
Where longitudinal beams or girders support through bridges, the spans preferably should have two main members. They should be placed sufficiently
Plastics with long-chain molecules, called polymers, are used in several ways to enhance concrete properties: replacement of portland cement, incorporation in