Bridgebuster,
Our design mix has superPlasticizer to be added at batching plant, but the slump at site was found to be 40mm only, sounds unusual and unacceptable. So the QC inspector reject the...
bridgebuster,
Thanks a lot for your excellent comment. Just to ask further, slump less than minimum specified in design mix, say Slump @ site =40mm while the specified minimum is 100mm. Is it acceptable to reject the concrete...
OUR MIX DESIGN HAS A SLUMP AT SITE 125 mm +/- 25mm with super plasticizer but usually, concrete arrived at site is less than the minimum or more than the maximum specified slump in the design mix. Is it right the QC inspector can reject the concrete?
Example Case: 1 truckmixer has slump at...
Txtstructural,
thanks a lot for your excellent opinion. But our supplier provide us methods statement which recommend gravel as additional ingredient despite of manufacurer's specs that specifies only cement and water as grout mix.Because of extra cuts that ranges from 10-15 cm, the supplier...
We are chipping concrete piles, as a result, cut concrete is more than 10 cm from the required level of pile head. Using non shrink grout without gravel is so expensive, so we need to add gravel because of extra thickness of concrete to repair. Can it be practical to add gravel? If so, what is...
hokie66,
tnx to your reply, greatly appreciated.Our foundation is clustered piles in different pile caps, it is located the edge of building with adjacent existing structure,on one side and a deeper pile cap on the other so overcut was made. In this case, I want to place boulders first with...
Our hospital project has deep foundation.Overcut of more less 1.8 m below pile cap was made due to space problem. Depth of water is about 80 cm. I want to backfill first with boulders mixed with concrete binder up to the water level. But I doubt the stability of subgrade foundation of the pile...
fattdad,
Im working for the contractor and we tried open sump with dicthes to dewater the area but still the method does not work effectively.http://files.engineering.com/getfile.aspx?folder=3ea062ae-1ae4-4992-80a7-526229447fb6&file=Determination_by_experimental_approach.docx
OUR CONSTRUCTION SITE IS ABOUT 300 M FROM SEA.AFTER SOIL INVESTIGATION, WE FOUND OUT THAT SUB-SURFACE MATERIAL IS CORRALINE SILT CLASSIFIED AS DENSE TO VERY DENSE. BUT TOO MUCH WATER IN THE AREA. WE TRIED OPEN SUMP PIT DEWATERING BUT THE AREA STILL WET. OUR WATERPROOFING STARTS AT PILE CAP UP TO...
