heat of hydration

heat of hydration

[′hēt əv hī′drā·shən]
(physical chemistry)
The increase in enthalpy accompanying the formation of 1 mole of a hydrate from the anhydrous form of the compound and from water at constant pressure.

heat of hydration

Heat evolved by chemical reactions with water, as during the setting and hardening of portland cement.
References in periodicals archive ?
This heat of hydration is a much greater problem for Freedom Tower's thick core walls, categorized as Mass Concrete, than for the conventional concrete walls outside the core," said Eilon.
Tenders are invited for Up-Gradation Of Existing License Of Midas Civil Advance Version To Full Version Include: Advance Version Functionality And Heat Of Hydration And Material Nonlinear Analysis And Inelastic Time History Analysis And Rsi Module .
Caption: Gauging the heat of hydration in a concrete mat at least 18 feet--even with a 25 percent fly ash binder component--engineers specified plastic piping to circulate chilled water through the mass concrete supporting the new Wilshire Grand Center.
Each mix design of thermal grout is different and is based on several requirements: thermal conductivity, flow (time of efflux), strength, rate of hardening and heat of hydration.
Replacing up to 50% of traditional Portland cement improves concrete strength by increasing the product's chemical resistance and durability, slower hydration rates and lower heat of hydration improves the integrity of mass concrete structures like large foundations, bridges and other structures.
However, the majority of the compatibility tests consist in comparing the kinetics of hydration of the wood-cement mixture to that of pure cement, by measuring the temperature or the heat of hydration (Sandermann et al.
The glass content of clinker was investigated by Lerch and Brownmiller by devising a method for its estimation (7), its occurrence in industrial clinkers (8), and its effects upon the heat of hydration of portland cements (9).
Styron added that MRT Cement(TM) can be formulated to have a wide range of properties, such as: high strength, cold weather resistance, low heat of hydration and rapid strength gain.
Magnetic Stirrer Hot Plate, Reaction Container, Heat of Hydration Apparatus with Walk, Analytical weight Box with NPL calibration certificate, Analytical Balance (Precision Balance), Muffle Furnace, PH Meter (Ion Analyser Chloride, Fluoride and Nitrate),
23 w/c ratio meaning Less shrinkage, earlier finish times from a lack of bleed water; lower permeability for longer service life; faster drying times for floorings/coatings (coatings in as little as three days); corrosion and heat resistance; lower heat of hydration (> 30 percent); freeze thaw durability (600 cycles); and, elimination of cement burn risks.
I-Cal-generated data is retrieved and analyzed with Calmetrix's advanced CalCommander software, encompassing a suite of analytical tools to make heat of hydration studies easy as a "one-click" experience.
How Pumice Pozzolans Super-Charge Concrete Performance" details the agents' potential to a) lower heat of hydration 10-40 percent in a mix's first 100 hours; b) resist sulfate attack and alkali-silica reactivity development; and, c) to replace up to 40 percent of portland cement as a supplementary cementitious material.