Determining Water-Soluble Sulfate Ion Content in Soil
1. SCOPE. 1.1. This test method covers the determination of the water-soluble sulfate ion content in soil. This standard is divided into two parts. The first part specifies the procedure for sampling and preparing the sample to size for testing. The second part delineates two test procedures (Methods A or B) for the determination of the sulfate ...
Aggregate Testing
Chloride (Acid -Soluble) BS 812, Part 117 Sulfate (Water-Soluble) BS 812, Part 118 Sulfate (Total or Acid-Soluble) BS 812, Part 118 Acid- soluble material in Fine Aggregates €BS 812, Part 118 Soundness of Aggregates - …
Concrete with EAF steel slag as aggregate: A
Acid-soluble sulphate and chloride, water-soluble sulphate, total sulphur, water solubility and free lime provided values under the detection limit. Carbonate content ranged between 0.1% (FS) and 4.3% (AS2); the higher value refers to the aged slag and is probably due to the ageing in an unprotected open area for several months that …
Internal sulfate attack in mortars containing contaminated fine …
In fine recycled aggregates (FRA), gypsum is an important contaminant to be considered: ... To keep the risk on sulfate attack at a reasonable level, the current water soluble sulfate limit in coarse recycled aggregates is established at 0.2% by EN 206 [20], with no mention of FRA. At these quantities, sulfates are considered the limiting ...
Evaluation of Characteristics and Building Applications of …
Water-Soluble Sulphate (%) Proposed Applications; Rc + Ru (%) Rb (%) Ra (%) Others (%) RCA-I >90 <10 <5 <1: 2200 <6 <35 <0.7: ... For fine aggregate sizes, sand equivalent tests were carried out to show the relative proportions of fine dust or clay-like materials in fine aggregates. ... In relation to chemical properties, recycled …
AASHTO T 291
This standard is divided into two parts. The first part specifies the procedure for sampling and preparing the sample to size for testing. The second part delineates two test procedures (Methods A or B) for the determination of the water-soluble chloride ion content in soil. Two methods are given as follows:
Materials | Free Full-Text | Valorization of Fine Recycled …
Fine recycled aggregates (FRA) (0/4 mm) are up to now not valorized on a high enough level because of characteristics like an elevated water absorption, higher …
Determination of water-soluble sulfates
10.1.1 Principle. An aggregate test specimen is extracted with water to remove soluble sulfate ions. The water-soluble sulfate content is determined by precipitation at pH …
Determination of water-soluble sulfates
The water-soluble sulfate content is determined by precipitation at pH between 1 and 1,5 by a solution of barium chloride, at the boiling point. ... For coarse or lightweight aggregates use two plastic or metal bottles of 5 l capacity and for fine aggregate use two bottles of 2 l capacity (5.3.2). Weigh each bottle and record its mass to the ...
SOUTH AFRICAN NATIONAL STANDARD
Soluble deleterious impurities in fine aggregates (limit test) ... rapid-hardening and sulphate-resisting). Amdt 1 SANS 197, Preparation of test samples of aggregates. SANS 5863, Concrete tests – Compressive strength of hardened concrete. ... add enough water to the fine aggregate to cover it completely. Stir well, and allow to stand for 24 h
Use of fine recycled concrete aggregates in concrete: A …
The shape of fine aggregates is largely changed from round to angular after recycling of concrete rubble. In addition, the fRCA particles have different particle size distribution and specific surface areas compared to fine natural aggregates. ... In most studies, the water and acid soluble chloride and sulfate contents in fRCA were not …
Evaluation of Characteristics and Building Applications of …
Regarding the chemical properties of aggregates, for fine-size particles, the total amounts of sulphur (S%), acid-soluble sulphates (SO3s%) and water-soluble …
Soluble sulphate in water and in acid solution expressed
Download scientific diagram | Soluble sulphate in water and in acid solution expressed in %SO3 in the RA samples from publication: Long-term leaching and mechanical …
(PDF) Determination of the water content of fillerised fine aggregates
alternative fine aggregate sources such as recy cled concrete fine aggregates (RCFA). 38 However, their use is still limited due to high WA values in the range 6-10 % [3,4].
Standard Test Method for Acid-Soluble Chloride in Mortar …
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 ...
(PDF) GRAVIMETRIC DETERMINATION OF SULPHATE IN …
0.5 g of anhydrous sodium sulphate was weight and put in 250 ml beaker, 20 ml of distilled water measured and poured and 20 ml of effluent was also measured and pour inside the same beaker.
Laboratory investigation of CDG soil as source of fine aggregates …
It is a composite material obtained by an appropriate proportioned mixture of coarse aggregate, fine aggregate, Portland cement, water, and other materials. ... The acid-soluble sulphate (SO 3) content (%) can be …
Laboratory Testing | Aggregate | Mattest
Polished Stone Value (PSV) – EN 1097-8. Ten Per Cent Fines – BS 812-111. Total Sulfur – EN 1744-1. Water Content – EN 1097-5. Water Soluble Sulfate – EN 1744-1. Water Soluble Chloride – EN 1744-1. See our accreditation schedules for a current list of INAB/UKAS accredited laboratory tests. Mattest offers a wide range of efficient and ...
Sulfate in concrete
Sulfate in concrete. Excessive amounts of mobile sulfate, derived from aggregates or other constituents in concrete, can cause disruption due to expansion. BS 8110 part 1 Structural use of concrete, 1985, had a limit of 4% by mass of cement based on the total acid soluble sulfate method expressed as SO 3 (clauses 6.2.5.3). This restriction was ...
Correlation analysis between sulphate content and
Soluble sulphates (from gypsum drywall) are a limiting factor in recycling of C&DW. Various samples were artificially prepared with different gypsum percentages. …
Laboratory investigation of CDG soil as source of fine aggregates …
The magnesium sulphate soundness S soundness (%) of fine aggregate is tested for the repeated crystallization and rehydration of the particles in magnesium sulphate (MgSO 4) solution. The soundness is analyzed according to the degree of disruption and defined by the following equation [31] associated with the standard …
Internal sulfate attack in mortars containing contaminated fine
Standard EN206 sets the water soluble sulfate limit at 0.2 % by weight of the aggregate but other studies suggest this limit could be safely increased. ... the sulfate content of fine recycled ...
(PDF) QUALITATIVE EVALUATION OF FINE …
SO 3 in fine aggregate with 0.5% and for coarse aggregate with 0.1%. Most Iraqi fine aggregate used in concrete contain relatively high amount of sulphate, so it's
Standard Test Method for Water-Extractable Chloride in Aggregate …
Scope. 1.1 This test method provides procedures for sampling and analysis of aggregate for water-extractable chloride using a Soxhlet extractor. Note 1: This test method is to be used when significantly high chloride content has been found in aggregates, concretes, or mortars. 1.2 The values stated in SI units are to be regarded …
Construction Standard CS3:2013 – Aggregates for …
substances by mortar method. Specifies the property requirements, quality control requirements and testing methods of aggregates for use in production of concrete. Covers coarse and fine natural aggregates and coarse recycled aggregates having an oven-dried particle density not less than 2,000 kg/m3. Does not cover lightweight aggregates ...
Internal sulfate attack in mortars containing contaminated …
Abstract. Internal sulfate attack can be caused by the gypsum residues present in fine recycled aggregates (FRA). As opposed to the better known external …
Materials | Free Full-Text | Valorization of Fine Recycled Aggregates …
Fine recycled aggregates (FRA) (0/4 mm) are up to now not valorized on a high enough level because of characteristics like an elevated water absorption, higher fines content, and the presence of contaminations. Leftover gypsum residues from the construction site can cause internal sulfate attack when FRA are incorporated into new …
Influence of the sulphate content of recycled …
The sulfate level of recycled aggregates is recommanded to stay under 0.2 mass% by standard EN206, to limit the risk on sulftate attack: the reaction between cement components, water and sulfates ...
Recycled aggregates: Guidance for producers and …
to 80mm, Fine aggregates from 0 to 4mm and All-in aggregates are a combination of the two. e.g. coarse 20/40, fine 0/4, all-in 0/31.5. ... Water soluble sulfate: <0.38% There are options for aggregate size depending upon the diameter of the pipe including coarse aggregates of 2/14, 4/20, 10/20 and 4/40 ...
Influence of the sulphate content of recycled aggregates on …
Subsequently, the limit of the water-soluble sulphate content is fixed at 0.5% (expressed in SO 3). In this case, the limit is related to the medium-term liberation. ... Expansion of mortars with gypsum contaminated fine recycled aggregates. Constr Build Mater, 38 (2013), pp. 1211-1220. View PDF View article View in Scopus Google Scholar …