How to make selfcompacting concrete mix design using Penttala?

hi, is anyone can share SCC mix design using Penttala design method. in Excel format for Creating a SCC mix design for my rproject ?

10 November 2018 5,323 2 View

How to quantify concrete performance using different admixtures?

How can i quantify concrete characteristic performance using different type of admixtures like high range water reducing admixture, air entraining admixture , viscosity modifying admixture...

06 July 2018 3,506 5 View

How to design Pervious concrete?

Can anyone suggest , how to design Pervious concrete design upto M25 for at different voids % & different paste volume as per ACI 522R 10 in excel format?

11 December 2017 1,672 3 View

Effect of Addition of phosphate in magnesium lignosulphonate in concrete?

what will happens on strength and shrinkage of concrete when magnesium lignosulphonate blend with phosphate?

09 October 2017 3,045 1 View

How to do ISAT test Calculation?

11 December 2016 1,181 0 View

How to synthesis polycarboxylic ether?

how can synthesis polycarboxylic ether in lab of APEG & MPEG type?

07 August 2016 8,599 0 View

What is pace rate applied in flexural strength of concrete?

Is there any relation for pace rate applied in both commpressive and flexural strength ? how pace rate determined as the size changes for cube or beam ?is there any calculation to determine pace...

31 December 2015 350 3 View

Is anyone having a astm C1702?

ASTM 1702 is related to heat of hydration of cement.i want to exact procedure as per astm standard?

10 November 2015 6,723 0 View

Need help for design of Exposed concrete?

hi, i want to know about of making a exposed concrete . in this, what should be mix design as well as combined gradation graph for aggregate.and which admixture i have to used for better expoed...

08 September 2015 6,476 0 View

Is anybody knows about alcox as viscosity modifier?

31 December 2014 1,964 1 View

Is there a deep reason for using the squared modulus of the wave function as the probability density of the existence of the particle?

I think we were all surprised at the first time we got to know quantum mechanics that the squared modulus of the wave function is the probability density of the existence of the particle? The role...

28 February 2021 6,282 9 View

Why do the air flow results vary totally when adding scalar in CFD ?

Dear All, We are using Autodesk cfd to calculate the air flow in a single sided naturally ventilated room, where air flow depends only on buoyancy due to temperature difference between inside and...

25 February 2021 9,602 4 View

Is there a suitable way to confine cell attachment area inside a multi-well plate?

Are there any types of cylindrical cell culture inserts that are designed to confine cell seeding area? Say, if I'm using a 12 well plate (3.5 cm^2/well), but only want to seed cells in the middle...

22 February 2021 7,127 4 View

Hi..how to isolate crude HDL (all subfractions) from human serum by size exclusion chromatography?

I would like to know about isolation of crude HDL from serum by SEC. Is it possible to perform with a serum sample volume of

19 February 2021 5,576 2 View

How to calculate the Atomic Polar Tensor using DFT ?

Dear friends, I am a beginner at DFT calculation. I have done a structure optimization using DFT- B3LYP/6-31G*, Nevertheless, I don't know How to calculate the Atomic Polar Tensor (APT) in...

17 February 2021 9,082 3 View

Do you know of an informal caregiver of a person who has recently received a bone marrow transplant?

We are conducting a pilot study of an intervention for informal caregivers of persons who have recently received a bone marrow transplant in the US. If you know of anyone who might be interested,...

13 February 2021 9,174 1 View

Measurement of water retention in organic substrates without a pressure plate?

Hello, I'm trying to measure the physical and hydrological properties of organic substrate media. Currently, I'm referring The book Soil sampling and Methods of Analysis by Carter and Gregorich....

09 February 2021 3,233 8 View

Any model suggestion for the Electronic Health Records dataset ?

I have sequentially measured the time-series Electronic Health Record patient dataset. This is 7 years of research and each patient's blood pressure, Hba1c, LDL, Hb, Baseline Age,...were measured...

09 February 2021 4,933 8 View

Does Gaussian 09W software take too long to give a result if we have a large chemical structure ?

DFT - gaussviev - gaussian09W - HOMO - LUMO

08 February 2021 6,012 5 View

Electron density difference maps(Fo-Fc): what is the meaning of negative densities (red blobs)?

Dear community, As far as I understand, negative density features point at stuff that is in the model, but not supported by experimental data. However, in many cases (e.g. attached image), when...

06 February 2021 2,847 2 View