Cement stabilized sand shall be used for backfill and bedding as called for by the plans and specifications, or as directed by the engineer. this section provides for the use of cementsand as bedding material aro und gravity sewer pipes constructed in.
Standard specification cement stabilized sand 023213 01012011 1. classified as sw, sp, swsm, spsm, or sm by unified soil classification system of astm487. 2. deleterious materials a. clay lumps, astm42 less than 0.5 percent. b. lightweight pieces, astm23 less than 5.0 percent.
A place sandcement mixture in 8inchthick loose lifts and compact toinimum of 95 percent of astm58, unless otherwise specified on plans. the moisture content during compaction shall be on the dry side of optimum but sufficient for hydration. perform and complete compacti on of sandcement mixture withinours.
Cement stabilized sand backfill. parteneral. 1.1 description. a. at the discretion of the engineer, cement stabilized sand meeting the following specification may be allowed as trench backfill. 1.2 measurement and payment.
A. cementstabilized sand shall be consideredart of the backfill requirement for the unit installed and shall be considered subsidiary to the length of the unit bid. if the cement stabilized sand is indicated to beeparate construction item for bulk backfill then the cement stabilized sand shall be measured per cubic yard as indicated on the plans.
Cement stabilized sand bedding and backfill material33.1 description. this item specifies cement stabilized sand to be used for backfill and bedding as called for on the drawings, in other parts of the specifications, or as directed by the engineer. 433.2 materials. cement shall be typeortland cement conforming to astm c150.
Standard specification cement stabilized sand 023217 01012011 g. cement stabilized sand in an area represented by core tests shall be considered satisfactory if the average of threeores is equal to at least 100 psi and if no single core is less that 70 psi.
Standard specification cement stabilized sand 023216 020108 b. material will be considered deficient when 7day individual strength test average of two specimens is less than 100 psi but greater than 70 psi. see paragraph 3.04 adjustment for deficient strength.
Specification requirements.his item governs for the excavation protection required for trenches in excess ofeet deep.his item should be utilized for placement of storm drain and other buried, linear structures.se item 403 for walls, footings, and other more complex excavation protection.
Technical specification for. cement stabilized sand backfill. november 2000. parteneral. scope of work. this section specifies cement stabilized sand for use as backfill and any other work that requires stabilized material, and.
Bedding sand and cement stabilized joint sand for relaying of the existing cleaned and palletized brick sweeping of the cement stabilized joint sand fogging of the compacted street bricks and for all manipulations, labor, materials, equipment, tools and incidentals necessary to complete the work.
City of pearland cement stabilized sand 022009 02252f water shall be potable, free of oils, acids, al kalies, organic matter, or other deleterious substances, meeting requirements of astm4. 2.02 mixing materialshoroughly mix sand, cement and water in proportions of the mix design usingugmilltype mixer.
2004 standard specifications book. last updated 11302007 when cement stabilized backfill is required, the excavation shall be backfilled with cement stabilized backfill to the elevations shown on the plans and measured in accordance with the excavation diagram shown on the plans. ifand equivalent of less than 80 will be used.
Cement stabilized sand shall be used for backfill and bedding as called for by the plans and specifications, or as directed by the engineer. this section provides for the use of cementsand as bedding material aro und gravity sewer pipes constructed in.
Cement stabilized sand is widely available and costefficient it utilizes less cement forurface area while maintaining its durability. at southern crushed concrete, our cement stabilized sand contains only lightweight pieces and is free of any organic damaging substance, as required by the city of houston and harris county.
433.1 description. this item specifies cement stabilized sand to be used for backfill and bedding as called for on the drawings, in other parts of the specifications, or as directed by the engineer. 433.2 materials. cement shall be typeortland cement conforming to astm c150. sand shall be clean durable sand containing not more than the.
Guide to cementstabilized subgrade soils, isroduct of the cp tech center with funding from sand equivalent se 133 specification for cementstabilized subgrade soils 42 1. general 42 2. referenced documents 42 3. submittals 42 4. materials 42.
The september 2017 revisions to the standard specifications are now available for download. eleven 11 specification have been revised. cement stabilized sand bedding and backfill material 12 312012 434 flowable fill112008 435.
Base, cementstabilized base or backfill, lean concrete, or other approved stabilizing material. provide concrete with at least 275 lb. of cement per cubic yard, if lean concrete is used, and place toinimum depth ofn. stabilizing material placed for the convenience of the contractor will be at the contractors expense.
Stabilized sand shall consist of approximately one to one and half sacks of type iii cement and 27 cu. ft. of cushion sand. concrete sand is not permitted. cement typeortland cement conforming to astm c150 shall be used. sand sand shall be free from organic or otherwise deleterious materials and shall conform to the following requirements.
Cement stabilized sand shall be placed around hdpe pipelines where depth of cover exceeds 20 feet inanhole reach unless otherwise stated. the cement stabilized sand bedding shall surround 42 and smaller hdpe pipe byinimum of 12 on top and both sides and byn the bottom. the cement.
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