IS 16052 (Part 1) : 2013 ISO 13765-1 :2004 Indian Standard REFRACTORYMORTARS PART1DETERMINATIONOFCONSISTENCYUSINGTHE PENETRATINGCONEMETHOD 1 Scope This part of IsO 13765 describes a method for the determination of the consistency of refractory mortars using a penetrating cone. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references,onlytheeditioncitedapplies.Forundatedreferences,thelatesteditionofthereferenceddocument (including any amendments) applies. ISO8656-1,Refractoryproducts—Samplingof rawmaterialsandunshapedproducts-Part1:Sampling scheme 3 Terms and definitions For the purposes of this document, the following terms and definitions apply 3.1 refractory mortar finely ground refractory composition which, generally after the addition of water or other specified mixed liquid, is used for laying and jointing bricks NOTE 1 The refractory components are related to the quality of the bricks with which the composition is to be used. NOTE 2 In some cases the mortar may be supplied in a ready-mixed state. 3.2 consistency of refractory mortars measure of the viscosity of the material in its ready-to-use state 4 Principle sample. 5 Apparatus 5.1 Consistency determination device, consisting of a penetrometer, a cone and a container for the sample. 5.1.1 and 5.1.2. 1 IS 16052 (Part 1) : 2013 ISO 13765-1 : 2004 2 3 Key 1 gaugeplate 2 toothed lever 3 button 4 drop rod 5 reflector 6 standardcone NOTE Reflecor may or may not be used. Figure 1—Penetrometer 5.1.1 Cone. The cone shall be made of brass or corrosion-resistant steel with a smooth, polished surface. It shall be of the dimensions shown in Figure 2, and shall be machined such that the mass of the cone and drop rod is 150g±0,25g.Thecone shall betightlyfittedwithno shoulderatthe joint to a needle tipmade of quench- hardenedsteelorstainlesssteel. 2 IS 16052 (Part 1) : 2013 ISO 13765-1:2004 Dimensions in millimetres Φ65 ±0,2 90° ±0,5° 93.2 @3' X ±0,5 M3,5 80 X ±0.05 30° Φ0.38 ±0,03 Φ8,38 ±0,025 Key 1 stainlesssteeldroprod 2 needle tip (made of quench-hardened steel or stainless steel) a Machine to desired mass. c Smooth and polished surface. d Tight fit. e No shoulder, i.e. smooth transition. Figure 2 Penetrometer cone 5.1.2 Sample container, a cylinder of 100 mm internal diameter and 50 mm depth. 5.2 Mixer, (see Figure 3) consisting of a stainless steel bowl and a metal blade. 3 IS 16052 (Part 1) : 2013 ISO 13765-1 : 2004 5.2.1 Stainless steel bowl, with a capacity of about 5 L and of the general shape and size shown in Figure 3, andprovidedwithmeansbywhichitcanbefixedsecurelytothemixerframeduringmixingandbywhichthe height of the bowl in relation to the blade and, to some extent, the gap between blade and bowl can be finely adjusted and fixed; 5.2.2 Metal blade, of the general shape, size and tolerances shown in Figure 3, rotating about its own axis as it is driven in a planetary movement around the axis of the bowl by an electric motor at controlled rotational frequencies. The two directions of rotation shall be opposite and the ratio between the two frequencies shall not be a whole number. Where more than one mixer is used, blades and bowls shall form sets which are always used together. The gap between blade and bowl shown in Figure 3 shall be checked regularly depending on the frequency of use. NOTE The gap indicated in Figure 3 (3 mm ± 1 mm) refers to the situation when the blade in the empty bowl is brought as close as possible to the wall. Simple tolerance gauges (feeler gauges) are useful where direct measurement is difficult. 5.3 Balance, having a maximum weighing capacity of 6 kg and capable of weighing to the nearest 1 g 5.4 Measuring cylinder, capable of measuring to the nearest 5 ml. 5.5Thermometer, capable of measuring to the nearest 1 °C. Dimensions in millimetres 200 30 2 13 Key 1 bowl 2 blade Figure3—Mixerbladeand bowl 4 IS 16052(Part 1) : 2013 ISO 13765-1:2004 6 Sampling sample to 5 kg