SPSM4060418 SPECIFICATION FOR BASECOURSE AGGREGATE Page 4 of 15 22.214.171.124 Clay Index The clay index of the fraction of basecourse passing the 75 m sieve shall not be greater than 3 when the aggregate is tested according to NZS 4407 1991 Test 3.5 Clay Index Test. 126.96.36.199 Plasticity Index The plasticity index of the frac tion of basecourse .
NEWCASTLE D ol erite PIETERMARITZBURG ol erite UMLAAS ROAD Tillite VERULAM Tillite Concrete aggregate 53mm 375 265 19mm 132 95 67 Crusher sand Unwashed G6 265mm . strength of concrete made with that aggregate but are a useful index of overall quality. Normal values for ACV range from 14 to 30 and for 10 FACT from 100kN to 300kN .
5 Grading 4.2 Flakiness index 5.1 Coarse aggregate When determined in accordance with BS 812 Section 105.1 the flakiness index of the combined When determined in accordance with BS 812 coarse aggregate shall not exceed 50 for uncrushed Section 103.1 using test sieves of the sizes given in gravel and 40 for crushed rock or crushed gravel.
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specification. For the pay adjustment to be effective there must be a 10 limitation on the mobilization bid item to prevent unbalanced bidding. b. Gradation fracture and plasticity index test results must be tailored to materials sources that are owned by counties or available commercially.
The flakiness Index of an aggregate sample is found by separating the flaky particles and expressing their mass as a percentage of the mass of the sample tested. The test is not applicable to material passing a 6.30 mm BS test sieve or retained on a 63.0 mm BS test sieve.
Oct 06 2020 These continue to be remarkable days here in the state of Utah and throughout the United States. We continue to work with the Governor and the Coronavirus Task Force to take bold and aggressive steps to slow the spread of the disease and reduce risk for our employees consultants contractors partners and their families as well as the general public.
Inspectors. Field personnel verify that materials meet the specifications and procedures are followed. This manual specifies sampling testing and inspection requirements. Emphasis has been placed on procedures for field use and the application of the test results in controlling aggregate production and construction methods.
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Elongation index Test of aggregate is conducted on coarse aggregates sample to estimate the shape of aggregates. For cement concrete types and base coarse construction and bituminous-construction the presentence of flaky and elongated aggregate particles are considered undesirable as they may cause inherent weakness with possibility of breaking down under heavy loads.
Mar 05 2004 4 If the Contractor is to supply aggregate the types and grades of aggregate must be shown on the plans. 5 If the Contractor supplies aggregate specify if a surface aggregate class other than B or better is required. 6 Specify transverse variance rate if
Dec 01 2016 Furthermore many state specifications have used 0.66 as the maximum allowable dust ratio. Consequently the dust ratio DR of 0.6 and 1.0 were selected as target dust ratios to study. In terms of the PI requirement most states have limited the plasticity index of the unbound aggregate
Mar 16 2018 SCOPE - This method of test lays down the procedure for determining the flakiness index. SAMPLE - A quantity of aggregate shall be taken sufficient to provide the minimum number of 200 pieces of any fraction to be tested. The sample will be taken by sieving the total sample of aggregate and 200 samples will be taken from aggregate retained on .
these specifications when doing their own construction and maintenance work without state or federal funding and oversight. Yet it is wise to be familiar with them and follow them whenever possible. Even if you choose to modify the specifications to suit a local material source or project it is best to begin with a state specification.
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