What do you mean by ggbs – cement replacement, Civil Engineering

Assignment Help:

Q. What do you mean by GGBS – cement replacement?

From structural point of view GGBS replacement enhances higher durability, lower heat of hydration and higher resistance to sulphate and chloride attack when compared with normal ordinary concrete. Conversely it also contributes to environmental protection since it minimizes use of cement throughout the production of concrete. 

Though it is identified that there are still some hindrances which prevent the prevalence of its usage in local market. Theoretically speaking GGBS concrete suffers from lower rate of strength development that is highly sensitive to curing conditions. In this connection certain site measures have to be introduced to construction industry to ensure better quality of curing process in order to secure high quality of GGBS concrete. Along with designers have to be cautious of the potential bleeding problem of GGBS concrete.

Another main difficulty of extensive use of GGBS concrete lies in the little source of supply of GGBS. As Hong Kong isn't a major producer of steel and GGBS as a by-product of steel has to be imported overseas and this introduces higher material cost because of transportation and supply of GGBS is unsteady andunstable.


Related Discussions:- What do you mean by ggbs – cement replacement

Define the finish-to-start dependency, Sheet rock cannot be installed in th...

Sheet rock cannot be installed in the new house you are building until a building inspector approves the plumbing, electrical, HVAC, and insulation.  This is an example of:

Determine the statements about unit area or borrow pit, Determine the State...

Determine the Statements about Unit Area or Borrow Pit? Ans: I.  Sometimes called Average Depth II. Works well for volumes for building sites and surface mines III. Needs

How to calculate the combined stresses, Compute the stresses at top and bot...

Compute the stresses at top and bottom fibers in a simply supported pre-stressed concrete beam with a rectangular cross section, 250 mm wide and 450 mm deep, as shown in Figure, at

Determine minimum radius that can used on horizontal curve, What is the min...

What is the minimum radius, R min , that can be used on a horizontal curve with a 70 mph design speed, a maximum superelevation, e max = 8%, and a side friction factor, f = 0.10?

Coagulation, Incoming water contains 2.5 mg/L as a substance of natural alk...

Incoming water contains 2.5 mg/L as a substance of natural alkalinity (HCO3-). The flow rate is 9.5 ML/day). (a) What feed rate is required if the alum dose is 7 mg/L and is avail

Define carbonation - underwater inspection of bridge, Define Carbonation - ...

Define Carbonation - underwater inspection of bridge? Carbon dioxide is present in the air and attacks the concrete directly. It has the effect of destroying the normal passivi

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd