98 or 95 percent Mod. Proctor density under slab?
To place steel without any mudmat - troublesome. I would suggest that you consider a layer of crushed stone on the sand, say 100mm thick or so, placed in such a fashion as to prevent the sand from being disturbed. Then you can used the crushed stone for placing the steel. Given this scenario, what difference would 95 or 98% mean?
Guidance for Soil Construction Standards and Testing …
to ensure compaction standards can be met. Clay should be placed in lifts with a maximum lift being 10 inches of loose clay or less, so that each compacted lift is no greater than 8 inches thick. Compaction of the clay is done with a sheepsfoot compactor to meet the 95 percent Standard Proctor maximum dry density as specified in the table.
CBR vs. density of G1 crushed stone …
Download scientific diagram | CBR vs. density of G1 crushed stone (Semmelink). from publication: THE IMPORTANCE OF COMPACTION FROM AN HISTORICAL PERSPECTIVE | Compaction of soils has been used for ...
Understanding the Layers of Road Construction: A …
Soil Preparation: Subgrade preparation involves removing unsuitable soil, adding suitable fill material, and compacting it to the desired density. This step is crucial to prevent settlement or deformation of the road. Compaction and Testing: Proper compaction is achieved through mechanical means such as rollers. Testing ensures that the ...
Self-Compacting 3/4" stone
Re: Self-Compacting 3/4" stone The crushed rock I was referring to, is, in my area, like a red quartzite, and it is still sorted and washed according to size and to remove fines. The larger the rock, the more reservoir capacity as far as drainage, because of more opens in the aggregate. 3/8 pea rock is the product of choice around here for AWWF footings, and …
Wich important tests are required on crushed stone base …
More important to monitor compaction by measuring in place density and maintaining consistent thickness . RE: Wich important tests are required on crushed stone base course? Drumchaser (Civil/Environmental) 28 Feb 09 18:44. ... Normally we haven't even done CBRs on crushed stone - other than maybe one or two at the very beginning to "prove ...
DIVISION 300 – AGGREGATE PAVEMENT AND BASES
In situ density will be determined in accordance with 203.24(b). The aggregate shall meet the compaction requirements at the time subsequent courses are placed. In areas inaccessible to compaction equipment such as private drives, mailbox approaches, and temporary runarounds, the compaction requirements may be accepted by visual inspection.
ia Test Methods
ia Test Method –6 Field Determination of Bulk Specific Gravity of Compacted ia Test Method – Determining Percent of Moisture and Density of Soils, Aggregate, and Full-Depth Reclamation Courses, and Density of Cold In-Place Recycling ia Test Method – Determining Amount of Fractured Particles in Crushed Gravel
Table 3602/1 CRUSHED STONE BASE AND SUBBASE: …
COMPACTION The density requirements of the layer in which the material is used, shall be applicable. REQUIREMENTS (See subclause 3402(b).) In restricted areas the in situ dry …
Bearing Capacity of 95% compacted fill
Ron is right in that a lot depends on the material. For a well graded crushed sand and gravel (road base) I've seen as much as 400 kPa used (assuming that there is no underlying softer material within the zone of influence). We've compacted residual clayey silt to silty clay at 95% standard Proctor and obtained an effective friction angle of 32deg.
Soil, Soil Aggregate, and Aggregate Base and Subbase
For crushed Aggregate Bases see AASHTO T-2 Table 1 for sample size AASHTO T-88 Atterberg Limits AASHTO T-89 as modified by ALDOT-232 AASHTO T-90 Moisture Density Standard Min. 1 each 10,000 Ft. (3000 m) each roadway, each layer, or each proportion or component source change Sample from roadway as soon as mixing process is completed 50 lbs.(25 kg)
Degradation Control of Crushed Stone Base Course …
density at optimum moisture content, while eliminating or at least minimizing degrada tion and segregation of compacted crushed stone base course mixes. Laboratory pro cedures analyzed were as follows: 1. Standard AASHO-ASTM compaction; 2. Static compaction; 3. Drop hammer compaction (i.e., molding a whole, unlayered specimen by drop
CALCULATING VOLUMES AND WEIGHTS IN …
BULK DENSITY This is a concept slightly different from the Bulking Factor CONCEPT. This is a measure of the WEIGHT of a given volume of material and is often expressed as an In situ or …
Crushed stone base compacted to i 98 of modified
Standard Technical Specification - 2002 Series 5000: Subbase Road Base And Gravel Wearing Course Division 5200: Road Bases Ethiopian Roads Authority Page 5000-35 The unit of measurement shall be the cubic metre of completed gravel base or crushed-stone base in place as the case may be, and compacted to the specified density. The quantity shall be calculated …
Does crushed stone need to be compacted? – TipsFolder
Clean gravel and crushed rock are sometimes referred to as "self-compacting," which means that the material will have a high density if dumped in alongside a pipe. Can you compact crushed stone as well? You may require different tools and equipment for stone compaction depending on the size and scope of your project.
self compacting #57 stone...again?!
you can hokie66. you get a lot of compaction by flooding. quick experiment: take 5 gal bucket. fill with clean sand (tamp or not tamp your choice...try both). then add water and see what happened. after you're amazed, gently tap the sides and watch the magic. the water lubes up the sand particle and imparts just enough pressure to allow it to ...
Performance of Crushed-Stone Base Courses
mance of the engineered crushed-stone base is attributed to (a) a uniform, high degree of density (100 percent of AASHTO T-180), (b) use of a well-graded crushed stone with 1- to 2-in. (25- to 50-mm) top she that has only 4 to 5 percent passing the No. 200 sieve, (c) practically no segregation, and
How much volume is lost after compacting 3/4" crushed stone?
Correct, my comment is 1/2 wrong. You didn't answer the question, but I wasn't asking how much it would compact. I was asking how much to order allowing for compaction.It appears you're deliberately trying to misinterpret the question - or perhaps you only read half the title, and not the 2nd half, or the body of the question.
Friction angle of crushed rock
If it is compacted, then it maybe is OK. Since you want to limit the pressure on the wall do this, if you can: ... please keep in mind that the measured angle of repose will ROUGHLY correspond to the internal friction angle of the crushed stone in a LOOSE state. density of the stone, as stated in previous threads, will have an impact on the ...
Calculate Crusher Run | Cubic Yard (or Feet) to Tons
The Density of Crusher Run : 2,410 lb/yd ... Compaction & Bases: Decorative Stone: Decorative Stone - Color: Decorative Stones: Decorative Stones - Black: ... #7 Granite Stone #73 Crushed Limestone #78 Granite Stone #78 Granite Stone #789 Limestone Pea Gravel #8 Granite Screening / S1B
base course aggregate compaction
Normally, in my experience, base courses are compacted to 98 to of the maximum dry density (MDD) Modified Proctor. ... In principle the crushed stone base after the compaction finish the section must be slushed by a pneumatic or tyred roller inorder to bring all fines to surface.All the fines must be broomed prior to primming.This will ...
Stone Calculator
Next, calculate the amount of stone you need in tons by multiplying the volume by the density of the stone material. Crushed stone or gravel smaller than 2″ weighs 1.4 to 1.7 tons per cubic yard, while larger stone usually weighs 1.5 to …
CALCULATING VOLUMES AND WEIGHTS IN …
Soils placed by hand are less compacted than those placed by machine. MATERIAL LOOSE DENSITY (Stockpile) COMPACTED DENSITY SAND T / m3 T / m3 Washed River Sand (Paving, Concrete, Drainage) *1.50 1.70 Brickies Sand (White, Yellow, Red) *1.40 – 1.50 N/A Propagating Sand (-3mm + 1mm) 1.45 1.70 Crusher Dust 1.50 2.20
Stone Calculator
Next, calculate the amount of stone you need in tons by multiplying the volume by the density of the stone material. Crushed stone or gravel smaller than 2″ weighs 1.4 to 1.7 tons per cubic yard, while larger stone usually weighs 1.5 to 1.7 tons per cubic yard. ... If you are calculating crushed stone for example, you would use the following ...
Evaluation of Elastic Modulus of Crushed Stone Base …
in the 1950's noticed after a sudden downpour towards the end of the compaction process, that the crushed stone layer would expel some fines, which is now known as the slushing process. ... required density of the crushed stone layer is achieved. Low moisture contents during this . 16 | International Journal of Scientific and Management ...
Clear rock, self compacting? | Contractor Talk
Which is crushed blue stone that is 2" to 3" pieces with no stone smaller than 2" and contains no fines. We put in 2 feet of that stone. Then we topped that with what we call #57 stone which contains crushed blue stone that ranges in size from 3/4" up to 1-1/2" and contains no fines. we put in 1 foot of the #57 stone.
Densities for Use in
Erosion Stone 120 pcf Recycled Pavement 135 pcf Macadam Stone 130 pcf Crushed Concrete for use as Subbase 135 pcf P.C.C. Pavement Broken for use as Class ″E″ Rip-Rap 120 pcf Rolled Stone Base 140 pcf Modified Subbase 140 pcf Crushed Brick 115 pcf Trench Foundation 127 pcf Densities for Use in Estimating Quantities 1B-4 Design Manual
Suggested Compaction Standards for Crushed …
Density tests were made with a water balloon volu meter during various stages of the rolling operation. The data are being used in an attempt to define a mathematical or graphical …
Density of Construction Materials in kg/m3 and …
Density of construction materials are its mass per unit volume of materials. It is expressed in kg/m3 or lb/ft3 and shows compactness of building material. Density is also called as unit weight of substance. It is represented by symbol called …