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Quality control Question 10

We have got two sulphate resistant cement types (CEM I and a CEM II using fly ash), and our clinker has got: C 3 S: 5...

Re: Quality control

1. The percent fly ash addition depends on the cement standards in your country and also on the expectations of your ...

Quality control Question 11

We have a automatic Robolab with Pfaff divider, Hertzog mills & press with Phillips 2400 XRF. We are seeing a drop in...

Re: Quality control

This a question we are going to have to put on the web (anonymously) as I do not have an answer. It must be something...

Quality control Question 12

We intend to increase the strength of our pozzolan (from natural pozzolan) cement to 30MPa (28 days). But we could ha...

Re: Quality control

There are two possible options. First you need to maximise the strength potential of the cement clinker you are blend...

Quality control Question 13

Will an OPC concrete become less or more resistant to sulphates with addition of extra OPC.

Re: Quality control

I believe it will become more susceptible to sulphate attack if more cement is present as there will be more hydrated...

Quality control Question 14

I would like to know more about alkali silica reaction in the concrete. Kindly clarify the following. I am aware that...

Re: Quality control

No, it is not possible for the alkali-silica reaction to cause cracking of concrete within a day or two of pouring th...