K Takada, G I Pelova and J C W Walraven, (1999) "Influence of Chemical Admixtures and Mixing on the Mix Proportion of General Purpose Self-Compacting Concrete". International Congress `Creating with Concrete', University of Dundee, UK, September pp. 6- 10....
Concrete samples having water to cement ratios ranging from 0.35 to 0.65 with various quantities of WRA (water-reducing and set-controlling admixtures) ranging from 0.00 to 0.40 percent at three temperatures were prepared and periodically tested at intervals up to 1 year. An average quality ...
From the DSC results, it is confirmed that the concrete samples with RA substitution have generated less amount of strength enhancement chemical products when compared to those without RA substitution. However, the results from the TSMA are found improving the RAC quality. The pre-mix procedure of...
for 2 minutes. For ease of mixing, add the Part B to the Part A (not the reverse). The epoxy must be well mixed to ensure the proper chemical reaction. After 2 minutes, place the epoxy into a clean and dry mortar mixer. Add the bags of Part C (aggregate) and mix for 2 ...
corrosion of the reinforcing bars in concrete, to improve the durability of a concrete structure in salt component environment and to enable the safe use of sea sand, sea pebbles, etc., by proposing the chemical admixture for suppressing the activity of chlorine ions in hydration reaction of ...
Direct measurement of the rate of a homogeneous reaction is achieved using a flow-mix reactor. The reactants are introduced at a constant rate into a vessel equipped with a powerful mixer, and the reaction mixture is removed in such a way that the quantity in the reaction vessel remains con...
It is impossible to obtain a product by merely carrying out a chemical reaction between the materials. It is necessary to first mix the materials before chemically reacting them; further, the products must be separated after the reaction. In general, the energy expended in physical changes before...
material surface can impart role in increasing the chemical reaction rate. Fouling deposits are mostly organic compound but inorganic might require to complete the chemical reaction [61]. Chemical fouling involves autoxidation, polymerization, cracking or coke formation which can enhance its complexity. ...
It is also possible for degraded products to combine with air, which will result in an oxidation and chain reaction [34, 55, 56]. Incorporating fire retardant into a polymer system can block certain phases of combustion, either in the condensate phase by erecting a barrier to thermal ...
All types of concrete build up a structure at rest, but the degree of this structural build-up is naturally greatly dependent upon the actual mix design. Therefore, there is no principal difference between CVC and SCC in this respect. As mentioned earlier, directly after casting, there is ...