Test Method: IS: 2386 (P-3)1963, ASTM C 127, 128-2007. Sulphate Content: The total sulphate content of aggregate is usually measured to assess whether the aggregate's contribution to the total sulphate content of a concrete mix will be low enough to prevent any deleterious effects. Test Method: IS: 4032-1985. Read More

 · the subsamples were then used to determine, in each of the six samples (three pairs) provided, the following: a. the total weight percentage of sulphur(to the nearest 0.01%), either by high temperature combustion analysis or by powder x-ray fluorescence spectrometry (clause 8.1); b. the weight percentage of the sulphate sulphur(to the …

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 · ASTM C88 Standard Test Method for Soundness of Aggregates by Use of Sodium Sulfate or Magnesium Sulfate ASTM E100 Standard Specification for ASTM Hydrometers CSA A23.2-9A Soundness of Aggregate by Use of Magnesium Sulphate 3. APPARATUS 3.1 SULPHATE TANK: A suitably constructed three-compartment tank, …

 · The following statements are based on high temperature combustion analysis of total sulphur: •For aggregates with sulphide sulphur content of. approximately 0.1% or …

Used for determining the sulphate content of ground water and aqueous soil extracts. It consists of a ion exchange column 400 mm long and 10 mm dia., a swan-neck outlet and a 1500 ml round bottom flask to give a constant …

 · Sand contaminated with sulphates is a local problem in the Middle East Area. It is difficult to obtain well graded sand with sulphate content within the limits specified by …

 · Specifications usually put upper limits of SO 3 content in cement, aggregate and concrete. The upper limit of SO 3 content is calculated assuming that sulfates from all concrete ingredients have the same effect. Based on the results of an extensive experimental program, it is suggested to adopt the effective sulfate concept.

Total Sulphate Content. According to ACI 201.2R-92, concrete mix arising from constituents and other sources is not to exceed the lesser of 0.4% by weight of aggregates or 4.0% by weight of cement in ...

The BS 882:1992 limits on the chloride ion content of aggregate by mass, expressed as a percentage of the mass of total aggregate. 5. Unsound Particles Two major classes of unsound particles are materials fail to …

Swiss recommendation (SIA 162/4) imposes the limits of 0.12% (mass of the primary concrete) for reinforced concrete and 0.03% for pre- stressed concrete [2]. Table 6 summarizes the chlorides and...

 · Aggregate Chemical Testing Acid Soluble Material . About Us News Services Case Studies Contact Back About ... Magnesium Sulphate (DWFS Specifications) DWFS (012, 013 & 049) ... Organic Contaminators (by mortar method) EN 1744-1. Sodium Sulphate Soundness BS 1438. Total Sulphur Content EN 1744-1. Total Neutralising …

 · In cases where the total sulphate exceeds 0.5 % it is suggested that the water soluble sulphate content of a 2 to 1 water-soil extract should be determined. If calcium sulphate is the only sulphate salt present its low solubility will ensure that the sulphate content of the aqueous extract does not exceed 1.2 gIl. Sulphate contents in excess of ...

When the HPP fiber content was 1.25% and the recycled aggregate replacement rate was 50%, the maximum impact energy consumption of RAC was 114.5 times higher than that …

 · For the SO3 limit, 0.4% SO3 by weight of concrete may be equivalent to about 3% by weight of cement, doubling the equivalent SO3 in the portland cement and …

 · a) Sulphate (SO 4) percent by mass = 41.15 W 1 /W 2 b) Sodium Sulphate (Na 2 SO 4) percent by mass = 60.85 W 1 /W 2 Where W 1 = mass in g of the precipitate W 2 = Mass of g of the soil contained in the solution taken for precipitation. Sample Format for determination of soluble sulphate content Reference IS : 2720 (Part 27) –1977 Tags: Soil …

 · There is a constant drive for the development of ultra-high-performance concrete using modern green engineering technologies. These concretes have to exhibit enhanced durability and incorporate energy …

Acid-soluble sulphate content of soil – gravimetric method. SO3. SOLID_TOT % Dry Mass. BS1377-3:1990:5.3 & 5.5. Water-soluble sulphate content of soil – gravimetric method. …

 · The sulphate salts content (SO3) of sample Syd Ali (S1) and Wilaya Ali (S2) is (0.28, 0.11%), respectively, falls within the limits of the standard Iraqi specification, while sulphate...

 · Scope. 1.1 This test method 2 provides procedures for the sampling and analysis of hydraulic-cement mortar or concrete for chloride that is acid soluble under the conditions of test. In most cases, acid-soluble chloride is equivalent to total chloride. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as ...

 · High cement content, more than 385 kg/m3, with corresponding low water-cement ratios, are very beneficial to sulfate resistance in general, where the basic concept is to produce concrete with...

B-ISA aggregate is composed of quartz formed by intercalation of fine sulfide contents. C-AAR aggregate is composed of a mylonite-type metamorphic rock, which has potential reactivity due to quartz with undulatory extinction in its composition. It also presents alkali feldspars, which can enhance the reactivity of the aggregate.

 · 3. Applied methods of aggregate alkali reactivity testing Potential aggregate reactivity has been estimated by means of a quick chemical method in accordance with the ASTM C 289 [3]. In ground aggregate, the content of silica dissolved in a sodium hydroxide solution at 80 °C was determined and the decrease in the solution alkalinity was measured.

 · In this way, mixed recycled aggregates with more than 30% of ceramic particles or with more than 2% of gypsum have high soluble sulphate contents. However, limits …

 · Alkali aggregate reaction. Alkali content. Delayed ettringite formation. Acid attack. The sulphate and sulphoaluminate content of concrete can be analysed by the methods given in BS 1881-124 (2015) and AS 1012.20 (2016) for example. In this case the acid solution prepared as described previously is analysed for sulphate ions.

Total sulphur was significantly (P < 0.01) correlated with sulphate, but variations in total sulphur accounted for only 15% of the variations in sulphate. Walkley-Black carbon values accounted for 47% and total nitrogen for 34% of the variations in total sulphur: pH and clay content were poorly correlated with total sulphur.

 · A standard solution of SO 4 Procedure: The procedure for the precipitate-ignition method is as follows: A 250 ml of testing sample is measured in a container. The adjustment of acidity is passed out by using HCl at a pH of 5 through pH measuring instrument. An additional amount of HCl is added up in the mixture 1-2 ml.

 · For the SO3 limit, 0.4% SO3 by weight of concrete may be equivalent to about 3% by weight of cement, doubling the equivalent SO3 in the portland cement and effectively surpassing any ASTM C 150 limit. For U.S. designers, call …

The following examples show the required fields in the lower table for each selected standard. Sulphate Content – Input to BS1377-3:1990:5.2 & 5.5 Sulphate Content – Input to BS1377-3:1990:5.3 & 5.5 Sulphate Content – Input to BS1377-3:1990:5.3 & 5.6 Sulphate Content – Input to BS1377-3:1990:5.4 & 5.5 Sulphate Content – BS1377-3:1990:5.4 & 5.6

The total sulfur content of the aggregates and filler aggregates, determined in accordance with EN 1744-1:1998, clause 11, shall not exceed: 2% S by mass for air-cooled blast …

 · Determine total sulfur by any suitable method. Calculation of sulfl.de sulfur Subtract the value for sulfate sulfur from total sulfur to obtain the value for sulfide sulfur. RESULTS Table 1 lists the results of the analyses in which 0 to 0.1088 g of SO3 from the sulfate standard was added to 0.2000-g samples of each of the 12 sulfide minerals.

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