AS-1289.3.5.1-2006.pdf
《AS-1289.3.5.1-2006.pdf》由会员分享,可在线阅读,更多相关《AS-1289.3.5.1-2006.pdf(9页珍藏版)》请在三一文库上搜索。
1、 1 AS 1289.3.5.12006 Standards Australia Australian Standard TM Methods of testing soils for engineering purposes Method 3.5.1: Soil classification tests Determination of the soil particle density of a soilStandard method 1 SCOPE This Standard sets out the method for determining soil particle densit
2、y by using a density bottle for the fine fraction of a soil and by weighing in water for soil particles retained on a 2.36 mm sieve. The soil particle density of the soil is the weighted average of the two values. 2 REFERENCED DOCUMENTS The following documents are referred to in this Standard: AS 11
3、52 Specification for test sieves 1289 Methods of testing soils for engineering purposes 1289.0 Part 0: General requirements and list of methods 1289.1.1 Method 1.1: Sampling and preparation of soilsPreparation of disturbed soil samples for testing 1289.2.1.1 Method 2.1.1: Soil moisture content tests
4、Determination of the moisture content of a soilOven drying method (standard method) 3 APPARATUS The following apparatus is required: (a) Density bottle of approximately 250 mL capacity. (b) Desiccator. (c) Drying oven complying with AS 1289.0, thermostatically controlled to operate at 105C to 110C.
5、(d) Balance with a limit of performance not exceeding 0.05 g. (e) Balance with a limit of performance not exceeding 1 g. (f) Thermometer to cover the range 0C to 100C, graduated to 1C and with an uncertainty not exceeding 0.5C. (g) A 2.36 mm sieve and pan as designated in AS 1152. (h) Means of obtai
6、ning a vacuum (e.g., a filter or vacuum pump). AS 1289.3.5.12006 Accessed by TAFE QUEENSLAND INSTITUTES on 04 Dec 2007 AS 1289.3.5.12006 2 Standards Australia .au (i) Distilled, demineralized or deionized water. NOTE: With certain soils (e.g., those containing water soluble salts) kerosene or other
7、liquid may be preferred. Where an alternative to water has been used, report the liquid used and determine its density at the temperature of the test by a separate experiment. Equation 6.3 for the soil particle density then becomes () ()() 2314 12L s mmmm mm = where s = soil particle density of the
8、fraction passing the 2.36 mm sieve, in grams per cubic centimetre L= density of the liquid used, at the constant temperature, in grams per cubic centimetre m2= mass of bottle plus stopper and dry soil particles, in grams m1= mass of density bottle plus stopper in grams m4= mass of bottle when full o
9、f liquid only, in grams m3= mass of bottle, soil particles and liquid, in grams (j) Wash bottle containing water. (k) Wash bottle containing acetone or alcohol. (l) Water bath to control temperature variations, or a constant temperature room (optional). (m) Wire basket of appropriate mesh and size o
10、r similar device for holding the sample. (n) Container for water of appropriate size and shape to accommodate the basket, and fitted with an overflow pipe so that the water will be maintained at constant level. (o) Suitable apparatus for suspending the basket from the hook, or device supporting the
11、scale pan of the balance. 4 PREPARATION OF SAMPLE The sample shall be prepared in accordance with the appropriate requirements of AS 1289.1.1. Using a 2.36 mm sieve, the fraction of material retained on the sieve shall be separated from that passing the sieve. 5 PROCEDURES 5.1 Soil particle density
12、of fraction passing the 2.36 mm sieve The balance described in Clause 3(d) shall be used for determining mass in this Section. The procedure shall be as follows: (a) Completely wash the density bottle with water, rinse several times with acetone or alcohol and dry by blowing air into the bottle. Det
13、ermine the mass of the bottle plus stopper (m1). (b) By riffling or quartering the material passing the 2.36 mm sieve, obtain a subsample that will occupy about one-third of the volume of the density bottle. Transfer the soil particles to the density bottle. (c) Add water to fill the bottle approxim
14、ately two-thirds full and allow the soil particles to soak for about 24 h. Accessed by TAFE QUEENSLAND INSTITUTES on 04 Dec 2007 3 AS 1289.3.5.12006 .au Standards Australia (d) Gradually apply a partial vacuum to the bottle (air pressure not exceeding 13 kPa) and maintain the vacuum for at least 10
15、min, occasionally rolling the bottle to assist in the removal of entrapped air. During this operation, take care to ensure that any air trapped in the soil does not bubble too violently, otherwise small drops of the suspension might be lost through the mouth of the bottle. (e) Fill the bottle with w
16、ater and allow time for it and the water to establish a thermal equilibrium with the water-bath or room. During this period (i) add water as necessary to maintain the water level; (ii) insert the stopper; (iii) dry the outside of the bottle; (iv) determine the mass of the bottle plus stopper and con
17、tents (m3); and (v) measure the temperature of the contents to within 1C. (f) Remove the soil from the bottle and place it in a dish, taking care not to lose any particles. (g) Dry the soil in an oven at 105C to 110C to constant mass (see AS 1289.2.1.1). Determine the mass (m1) of dry soil. (h) Fill
18、 the bottle with water and allow time for it and the water to reach within 2C the equilibrium temperature established in Step (e). During this period (i) add water as necessary to maintain the water level; (ii) insert the stopper; (iii) dry the outside of the bottle; and (iv) determine the mass of t
19、he bottle plus stopper plus water (m4). (i) Repeat the procedure using a separate subsample. 5.2 Soil particle density of fraction retained on the 2.36 mm sieve The balance described in Clause 3(e) shall be used for determining mass in this procedure. The procedure shall be as follows: (a) Obtain a
20、subsample of approximately 5 kg by riffling or quartering the material retained on the 2.36 mm sieve. (b) Thoroughly wash the subsample to remove dust and other coatings from the surface of the particles. (c) Immerse the subsample in water at room temperature for a period of 24 h. (d) Determine the
21、equivalent mass of the wire basket immersed in water (m6). NOTE: With some direct reading balances a small error may be introduced when determining the equivalent mass of the basket under water. This will be caused by the movement of the arm of the beam creating a variation in the depth of the immer
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- AS 1289.3 5.1 2006
链接地址:https://www.31doc.com/p-3729613.html