Sampling and preparation of aggregates and fillers is necessary for a variety of reasons including research, design and quality control. The main aim of sampling is to obtain a sample representative of the average quality. Sampling techniques and procedures are described in various standards including BS 812: Part 101 and 102 and ASTM D75. Individual items of equipment necessary for sampling and preparation are described in the soils section of the catalogue.

Most test techniques involve the use of drying ovens and balances. The moisture content of aggregate is of importance e.g. when batching concrete or when compacting unbound materials to achieve a specified density. Accurate means of determining moisture content are specified in various Standards and include methods suitable for use in the laboratory or on the construction site.

•Reliable and accurate moisture measurement in the field
•Direct reading in percent moisture
•Rapid results in minutes
•New versions with heavy duty plastic carrying case
and portable electronic balance

The new range of Speedy Moisture testers now includes an electronic balance and a heavy duty plastic case. Designed for the most demanding on-site conditions, the new waterproof and durable case offers high levels of protection. The new model comprises: Speedy Moisture tester, electronic balance, beaker, cleaning cloth, cap, washer, scoop, steel pulverising balls, and cleaning brushes. Used to weigh a sample before placing it in the Speedy Moisture Tester, the portable battery powered balance includes LCD display with a measuring range 0 – 200 g x 0 g. The % moisture content of the sample is read directly from the calibrated pressure gauge.

Model No. Model Moisture range Gauge div. Sample wgt.
23-7452 D2 Large 0 to 20 0.2 20
23-7462 G2 Large 0 to 50 0.5 8
23-7502 D2 Small 0 to 20 0.2 6

Among many of the applications to which aggregate lends itself is its use in economical concrete mixes, impervious, durable asphalts, macadams and road bases. Particle size, shape and texture can have considerable effects on various design properties and are generally specified within certain limits. Rounded aggregate can lead to instability in a bituminous mixture yet be ideal as a concrete aggregate where good workability of the mix is essential for placing and compaction.

Model No. Ap. Size Type
79-0040 38 μm Mesh
79-0050 45 μm Mesh
79-0060 53 μm Mesh
79-0070 63 μm Mesh
79-0080 75 μm Mesh
79-0085 80 μm Mesh
79-0090 90 μm Mesh
79-0095 100 μm Mesh
79-0100 106 μm Mesh
79-0110 125 μm Mesh
79-0120 150 μm Mesh
79-0125 160 μm Mesh
79-0130 180 μm Mesh
79-0135 200 μm Mesh
79-0140 212 μm Mesh
79-0150 250 μm Mesh
79-0160 300 μm Mesh
79-0170 355 μm Mesh
79-0175 400 μm Mesh
79-0180 425 μm Mesh
79-0190 500 μm Mesh
79-0200 600 μm Mesh
79-0210 710 μm Mesh
79-0215 800 μm Mesh
79-0220 850 μm Mesh
79-0230 1 mm Mesh
79-0240 1.18 mm Mesh
79-0245 1.25 mm Mesh
79-0250 1.40 mm Mesh
79-0255 1.60 mm Mesh
79-0260 1.70 mm Mesh
79-0270 2 mm Mesh
79-0280 2.36 mm Mesh
79-0285 2.50 mm Mesh
79-0290 2.80 mm Mesh
79-0300 3.35 mm Mesh
79-0310 4.00 mm Mesh
79-0320 4.75 mm Mesh
79-0340 6.70mm Mesh
79-1500 4.00 mm Perforated
79-1510 4.75 mm Perforated
79-1515 5.00 mm Perforated
79-1520 5.60 mm Perforated
79-1525 6.30 mm Perforated
79-1530 6.70 mm Perforated
79-1540 8.0 mm Perforated
79-1550 9.50 mm Perforated
79-1555 10.00 mm Perforated
79-1560 11.20 mm Perforated
79-1565 12.50 mm Perforated
79-1570 13.20 mm Perforated
79-1575 14.00 mm Perforated
79-1580 16.00 mm Perforated
79-1590 19.00 mm Perforated
79-1595 20.00 mm Perforated
79-1600 22.40 mm Perforated
79-1605 25 mm Perforated
79-1610 26.50 mm Perforated
79-1615 28.00 mm Perforated
79-1630 31.50 mm Perforated
79-1640 37.50 mm Perforated
79-1655 50 mm Perforated
79-1660 53 mm Perforated
79-1670 63 mm Perforated
79-1680 75 mm Perforated
79-0010 - Lid
79-0020 - Receiver

Model No. Ap. Size Type
79-2130 180 μm Mesh
79-2040 38 μm Mesh
79-2070 63 μm Mesh
79-2080 75 μm Mesh
79-2085 80 μm Mesh
79-2090 90 μm Mesh
79-2095 100 μm Mesh
79-2110 125 μm Mesh
79-2120 150 μm Mesh
79-2135 200 μm Mesh
79-2140 212 μm Mesh
79-2150 250 μm Mesh
79-2160 300 μm Mesh
79-2165 315 μm Mesh
79-2170 355 μm Mesh
79-2175 400 μm Mesh
79-2180 425 μm Mesh
79-2190 500 μm Mesh
79-2200 600 μm Mesh
79-2205 630 μm Mesh
79-2220 850 μm Mesh
79-2230 1.0 mm Mesh
79-2240 1.18 mm Mesh
79-2245 1.25 mm Mesh
79-2255 1.60 mm Mesh
79-2260 1.70 mm Mesh
79-2270 2.00 mm Mesh
79-2280 2.36 mm Mesh
79-2285 2.50 mm Mesh
79-2290 2.80 mm Mesh
79-2300 3.35 mm Mesh
79-2310 4.00 mm Mesh
79-2320 4.75 mm Mesh
79-2500 4.00 mm Perforated
79-2510 4.75 mm Perforated
79-2515 5.00 mm Perforated
79-2520 5.60 mm Perforated
79-2525 6.30 mm Perforated
79-2530 6.70 mm Perforated
79-2540 8.00 mm Perforated
79-2550 9.50 mm Perforated
79-2555 10.00 mm Perforated
79-2560 11.20 mm Perforated
79-2565 12.50 mm Perforated
79-2570 13.20 mm Perforated
79-2575 14.00 mm Perforated
79-2580 16.00 mm Perforated
79-2590 19.00 mm Perforated
79-2595 20.00 mm Perforated
79-2600 22.40 mm Perforated
79-2605 25.00 mm Perforated
79-2610 26.50 mm Perforated
79-2615 28.00 mm Perforated
79-2630 31.50 mm Perforated
79-2640 37.50 mm Perforated
79-2645 40.00 mm Perforated
79-2650 45.00 mm Perforated
79-2655 50.00 mm Perforated
79-2660 53.00 mm Perforated
79-2670 63.00 mm Perforated
79-2680 75.00 mm Perforated
79-2684 80.00 mm Perforated
79-2690 90.00 mm Perforated
79-2710 125.00 mm Perforated
79-2010 - Lid
79-2020 - Receiver

Model No. Ap. Size Type
79-5800 6.30 mm Mesh
79-5910 1 mm Mesh
79-5900 1.18 mm Mesh
79-5890 1.40 mm Mesh
79-5880 1.70 mm Mesh
79-5870 2 mm Mesh
79-5850 2.80 mm Mesh
79-5840 3.35 mm Mesh
79-5860 2.36 mm Mesh
79-5830 4 mm Mesh
79-5820 4.75 mm Mesh
79-5810 5.60 mm Mesh
79-6360 75 mm Mesh
79-6190 6.70 mm Mesh
79-6200 8 mm Mesh
79-6210 9.50 mm Mesh
79-6220 11.20 mm Mesh
79-6230 12.50 mm Mesh
79-6240 13.20 mm Mesh
79-6250 16 mm Mesh
79-6260 19 mm Mesh
79-6270 22.40 mm Mesh
79-6280 25 mm Mesh
79-6290 26.50 mm Mesh
79-6300 31.50 mm Mesh
79-6310 37.50 mm Mesh
79-6320 45 mm Mesh
79-6330 50 mm Mesh
79-6340 53 mm Mesh
79-6350 63 mm Mesh
79-6370 90 mm Mesh
79-6380 100 mm Mesh
79-6400 125 mm Mesh
79-6100 38 µm Mesh
79-6090 45 µm Mesh
79-6080 53 µm Mesh
79-6070 63 µm Mesh
79-6060 75 µm Mesh
79-6050 90 µm Mesh
79-6040 106 µm Mesh
79-6030 125 µm Mesh
79-6020 150 µm Mesh
79-6010 180 µm Mesh
79-6000 212 µm Mesh
79-5990 250 µm Mesh
79-5980 300 µm Mesh
79-5970 355 µm Mesh
79-5960 425 µm Mesh
79-5950 500 µm Mesh
79-5940 600 µm Mesh
79-5930 710 µm Mesh
79-5920 850 µm Mesh
79-6150 - Lid
79-6160 - Receiver