Page 147

32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf

CONTENTS CONCRETE REPAIR CORROSION CONTROL GROUTS & ANCHORS PROTECTIVE COATINGS INDUSTRIAL FLOORING SURFACE TREATMENTS JOINT SEALANTS CONCRETE JOINTING JOINT FILLERS WATERPROOFING WATERSTOPS ROOFING TIMBER FLOORING ALPHABETICAL INDEX Technical Data Sheet 135 High strength gain, low shrinkage mortar for the installation of elastomeric bridge bearings Uses Renderoc BB exhibits a series of performance characteristics which make it ideal for use as a bearing mortar for the installation of elastomeric bridge bearings. Description Renderoc BB concrete reinstatement mortar is supplied as a ready to use blend of dry powders which requires only the site addition of clean water to produce a mortar. It is based on Portland cements, graded aggregates and chemical additives which provide a mortar with good handling characteristics while minimising water demand. The low water requirement ensures good strength gain and long-term durability. Advantages „ Rapid strength gain „ Contains sufficient coarse aggregate to provide a rough finish on the surface supporting the bearing „ Uses shrinkage limited cement conforming to AS3972 and RTA 3211 „ Aggregate grading in accordance with RTA B80 table B80.3 „ No plastic or dry state expansive admixtures „ Aggregate classified as non-reactive when tested for AAR by accelerated mortar bar test in accordance with RTA T363 „ Drying shrinkage meets requirements of RTA B80 table B80.7 Design Criteria Renderoc BB exhibits a series of performance characteristics which make it ideal for use as a bearing mortar for the installation of elastomeric bridge bearings. Renderoc BB has been designed to provide rapid strength gain when mixed at consistencies ranging from dry pack to flowable. It can be applied at thicknesses of 20 - 150 mm with or without formwork (depending on mix consistency). Renderoc BB contains sufficient aggregate to allow it to be finished to a surface roughness suitable for the support of an elastomeric bridge bearing. It also does not contain any plastic or dry state expansive admixtures and does not need to be restrained during set. Properties Compressive strength (AS1478.2-2005) Cure Time (Days) Dry Pack / Stiff Trowelable / Plastic Flowable 1 50 37 21 2 58 48 35 3 67 55 38 7 77 58 47 14 78 59 53 28 79 60 56 Cure Time (Days) 8°C 15°C 23°C 1 6 7 21 2 19 22 35 3 29 30 38 7 40 44 47 14 52 52 53 28 53 54 53 Compressive strength (AS1478.2-2005), when mixed at flowable consistency. Cured in a sealed plastic bag at various temperatures. Note: results quoted where obtained at bottom end water for each consistency, eg. compressive strength result of 60 MPa at 28 days trowelable consistency was achieved using 1.86 litres mixing water per 20 kg bag of Renderoc BB. Drying Shrinkage (AS1012.13) Mixed at a < 500 microstrain @ 21 days flowable consistency < 600 microstrain @ 28 days Setting time (AS1012.18) Cured at 23°C Initial Set Final Set 3 hours 5 hours Alkali Aggregate Reaction Rapid mortar bar test 363. Aggregates classified as non-reactive RTA Fresh Wet Density Approximately 2200 kg/m³. Depending on actual consistency used Note: Compressive strengths stated above were measured using cube samples. Test results obtained will vary if testing is carried out to an alternative standard or sample dimensions are used. Fosroc® Renderoc BB March 2014


32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf
To see the actual publication please follow the link above