sonitec The most effective solution for integrity checking of concrete piles and deep foundations

Transcription

1 sonitec The most effective solution for integrity checking of concrete piles and deep foundations

2 Dextra sonitec WHAT IS CROSS SONIC LOGGING? Definition Crosshole Sonic Logging (CSL) is an accurate method to determine the structural integrity and homogeneity of concrete within diaphragm walls, bored piles, drilled shafts, barretes, concrete piles or augercast piles. This method is: Widely used for more than 30 years. Practical and economical for deep foundation integrity testing. Method The speed of sound wave propagation in concrete is dependent on the concrete material properties. Thus, the CSL measures the propagation time and relative energy of an ultrasonic pulse between an ultrasonic transmitter and receiver in two parallel waterfilled tubes installed at a specific spacing within the deep foundation element during Steel rebar CSL tubes Ultrasonic pulse Typical tube configuration for a pile (diameter 1000 to 1400 mm) construction. The transmitter and receiver ultrasonic probes are lowered and lifted in unison in their respective water-filled tubes to test the full shaft length from top to bottom. Typical ultrasonic profile (response time and energy on damaged pile)

3 Dextra sonitec ABOUT sonitec The most effective solution for drilled shafts integrity check Product Features Sonitec are thin black steel tubes available in different diameters with an enlarged end in a bell mouth shape. This makes the connection between 2 tubes an easy process and minimises labour cost. The bell mouth and rubber gasket ensure a concrete-tight joint that will maintain the tube integrity and prevent the entry of foreign material. Fixing ears Product Benefits Easy assembly with PUSH-FIT concept. Fast and easy handling by operatives. Push-fit No preparation time. No power / welding / threading required. No equipment required. Easy visual inspection at site with the PUSH-FIT mark. Bell mouth with rubber gasket Additional Applications Length control Verification of the depth of the foundation. Coring Fixing ears Control that drilled shafts are socketed into bedrock. One tube is replaced by a larger diameter onr for coring (see left page). Post-grouting Injection of high pressure grout Push-fit mark to validate full engagement beneath the tip of the shaft. Additional Sonitec Toe-grouting accessory ASTEC GFRP Pipes are also available for soft-eye location. GFRP cuttable nature prevents any damage to occur on the TBM head during breakthrough. Rubber cap reinforced with steel cap

4 Assembly Instructions Install the bottom cap onto the end of the first tube. Install the first tube in the rebar cage and fix it to the reinforcement by tying steel wire around the tube and through the fixing ears Proceed with first cage installation. Simply push the upper tube section into the first tube. Prepare the next section of the tube in the upper cage and fix it similarly as described in step 2. Validate the assembly by aligning the yellow mark with the rubber gasket. Lift and approach the second cage. Connect reinforcement Secure the assembly by connecting tightly the ears of both tubes with steel wires. Repeat the process for all other tubes and cage segments. Installation sequence video dextragroup.com/sonitec

5 Foundation Type Bored piles (Ø < 1,000 mm) Bored piles (Ø > 1,000 mm) Diaphragm wall & barrettes Product Specifications & Performance Product Name ST 50* ST50-2mm* ST 75 ST 100 ST 110 ST 150 Nominal Diameter 50 mm (2 ) 50 mm (2 ) 88 mm (3 ) 102 mm (4 ) 112 mm (4 ) mm (6 ) Wall Thickness 1.00 mm 2.00 mm 1.20 mm 1.50 mm 1.50 mm 1.50 mm Standard Length 5.80 m 5.80 m 5.80 m 5.80 m 5.80 m 5.80 m Weight 7 kg 14 kg 15 kg 22 kg 24 kg 35 kg Waterproofness Up to 200 m Up to 200 m Up to 100 m Up to 100 m Up to 100 m Up to 100 m Bell mouth pull out strength Fixing ear loading capacity 40 kg 40 kg 50 kg 50 kg 50 kg 65 kg 150 kg 150 kg 150 kg 150 kg 150 kg 150 kg * Gaskets are made with high performance synthetic rubber, improving durability and UV resistance. Welded steel cap available on request. Other wall thicknesses and lengths availabe upon request. Quality Control Manufactured under Quality Management System - ISO Tested under supervision of Bureau Veritas & SGS. Compliant with ASTM D6760 Standard Test Method for Integrity testing by ultrasonic crosshole testing. 100% verified in factory: each Sonitec is tested for leakage. Recommendation for Storage As Sonitec tubes are made of black steel, if subjested to normal weather conditions discoloration may occur. To avoid this issue, please note the following instructions: Cover the steel tubes with tarpaulin or keep the steel tubes in a covered area or closed container. Avoid exposing them to environmental conditions (humidity, rain, heat...). For better storage conditions and easy tube management on site, storage containers are available upon request.

6 Some Major References sonitec Causeway Bridge, Kuwait Bangkok MRT, Thailand Commercial presence in more than 55 countries. HEADQUARTERS THAILAND Dextra Manufacturing Co., Ltd. Tel: (66) Fax: (66) thailand@dextragroup.com EUROPE Dextra Europe SARL. Tel: (33) Fax: (33) europe@dextragroup.com NORTH AMERICA Dextra America Inc. Tel: (1) / america@dextragroup.com Manufactured in CHINA Dextra Building Products (Guangdong) Co., Ltd. Tel: (86) Fax: (86) china@dextragroup.com MIDDLE EAST Dextra Middle-East FZE Tel: (971) Fax: (971) middleeast@dextragroup.com LATIN AMERICA Dextra Latam Tel: (507) / latam@dextragroup.com HONG KONG Dextra Pacific Ltd. Tel: (852) / Fax: (852) / dplbuilding@dextragroup.com INDIA Dextra India Pvt. Ltd. Tel: (91) / Fax: (91) india@dextragroup.com SOUTH AMERICA Dextra do Brasil Tel: (55) / brasil@dextragroup.com Sonitec Brochure - August PS+JD