I have a project where the owner is proposing to use a soil-cement mix in the reinforced zone of a bridge abutment. The reinforcement options are HDPE, PET or hot dip galvanized strips. I have been advised by a local distributor of the PET geogrids that the cement alkalinity will damage the...
What should be the parameters (internal friction angle and cohesion)for Geofoam. I will like to evaluate using geofoam in a SRW but don't know where to obtain these values. The local EPS supplier does not have any idea. They could only give me the density which was about 1.1 pcf and the...
Which Compaction method is best suitable for specifying the compaction requirements on a Segmental retaining wall reinforced with poliester geogrids. Material specified for the reinforced zone is A-2-4 or better.
According to AASHTO T 267 test method, the organic content obtained is for the portion finer than sieve No. 10. Tipically the portion finer than sieve No.10 is less than 10 percent of the whole A-1-a sample. If I start with 1500 grams of A-1-a sample and end up with only 100 grams for the...
Can someone explain why AASHTO describes a maximum of 1% organic content as part of soil aggresiveness on soils to be used as reinforced backfill for extensible reinforcement, but when describing the soil aggresiveness for inextensible reinforcement, it does not mention the organic content at all?
We had some problems and now have to weld the hot dip galvanized steel reinforcement used in a Segmental Retaining Wall. These reinforcements are made of steel rods about 5/8" diameter down to 3/8". They will be buried in granular material, probably 3/4" aggregate down to a...
We have done a one tier near vertical wall, 65 feet height and will like to know if any of you know of a higher segmental retaining wall. This was done with KeySystem units and steel reinforcements and is located in Puerto Rico. Work was completed on February 2002.
Please let me know your...
