METHOD STATEMENT. BluSeal Tekflex EXTERNAL CEMENT LATEX MEMBRANE

Transcription

1 BluSeal Tekflex EXTERNAL CEMENT LATEX MEMBRANE

2 CONTENTS For the installation and quality control of BluSeal Tekflex External Cement Latex Membrane 1.0. GENERAL QUALITY CONTROL SUITABILITY OF SUBSTRATE PREPARATION OF SUBSTRATE WEATHER CONDITIONS INSTALLATION SYSTEM INSTALLATION CHECKS REPAIR OF DEFECTS INTEGRITY DOCUMENTATION Bluey Technologies

3 1.0. GENERAL The installation and composition of BluSeal Tekflex Two Part External Cement Latex Membrane System shall be as stated by Main Road Authority/ Client and this Method Statement. Installation of the BluSeal Tekflex Two Part External Cement Latex Membrane System shall only be carried out by Authorised Contractors appointed and trained by Bluey Technologies P/L. A programme of work shall be agreed with the Main Road Authority/Client prior to commencement of installation. Requirements for the provision of sufficient working area, plant, safety and, if required, protection to the waterproofing system shall be agreed. The current Method Statement together with all necessary Material Safety Data Sheets and Risk Assessment for the Works must be given to the Main Road Authority/ Client and maintained on-site QUALITY CONTROL All batches of the membrane system shall be supplied with a certificate of Conformity/Analysis. Every batch shall be subject to visual quality control checks to ensure compliance with the system specification. Each component of the membrane system received on-site shall be logged and stored in accordance with the manufacturer s instructions to prevent contamination or deterioration. At time of batching and application, documented Quality Control in accordance with Bluey Technologies P/L QA and QC Guidelines are to be used SUITABILITY OF SUBSTRATE The BluSeal Tekflex waterproofing system is suitable for use in tunnels, sewers, open cut rock faces and is potable water approved in accordance with AS/NZS 4020:2005. A shotcrete surface shall be a minimum of 28 days old prior to application. Where the application does not meet the requirements of Sections 3.1 the Authorised Contractor will consult with the Main Road Authority/Client and Bluey Technologies P/L on the course of action to be taken prior to the commencement of work on-site. BluSeal Tekflex 3

4 4.0. PREPARATION OF SUBSTRATE The areas to which the membrane system is to be installed shall be clearly defined by the Main Road Authority/ Client prior to commencement of work on site. All defective host substrate must be removed prior to application. Defective materials include cracked or structurally weakened surfaces and also chloride contaminated and carbonated surfaces. For rock cuttings/faces all loose rock, debris, dust and all other surface contaminants must be removed. High pressure water blasting is recommended for this purpose. Host concrete must be roughened and aggregate exposed to ensure good bond. High pressure water blasting or shot blasting of the surface is recommended for this purpose. The preparation method shall be approved by the Main Road Authority/Client. For steel surfaces, all rust, dirt and contamination must be removed to achieve Sa 2.5 surface finish. All surfaces must be free from ice, frost, oil, grease, curing compounds, shutter release oils, loose particles, laitance, friable matter, dirt and all other contaminates. This may require steam cleaning or high pressure water blasting if site conditions permit. Where deemed necessary by the Authorised Contractor, imperfections in the surface/substrate shall be reinstated by the Main Road Authority/ Client with a material compatible with the membrane system as agreed in consultation with the Authorised Contractor and Bluey Technologies P/L. Following the preparation work and prior to the installation of the membrane system, the substrate shall be inspected and approved by the Authorised Contractor and Bluey Technologies to ensure the preparatory works are satisfactory WEATHER CONDITIONS Installation of the membrane system shall only be carried out at a minimum air and substrate temperature of 5 C and rising. Air, substrate temperature and relative humidity shall be monitored and recorded during the installation process. Installation of the membrane system must only take place when the substrate temperature is above the dew point. 4 Bluey Technologies

5 6.0. INSTALLATION 6.1. GENERAL Installation of the BluSeal Tekflex Two Part External Cement Latex Membrane System shall only be carried out by Authorised Contractors trained and approved by Bluey Technologies P/L Adhesion of the Tekflex membrane to the substrate including any repair systems used shall be measured prior to the installation by random spot application The Authorised Contractor shall assess the adhesion by testing for tensile bond strength using 25mm to 50mm diameter dollies applied directly to the uncured membrane. A minimum of three tests shall be carried out per 500m2, or a minimum of three tests for small structures Tekflex Membrane thickness shall be measured using a Wet Gauge. Membrane thickness is to be measured every 10m Tensile adhesion values achieved shall be recorded and must be typical for the BluSeal Tekflex External Cement Latex Membrane System claimed by Bluey Technologies P/L. If however, lower untypical tensile adhesion values for the system are recorded then the Authorised Contractor shall consult with the Main Road Authority/Client on the course of action to be taken prior to the commencement of the installation of the system A site record must be signed off by the Authorised Contractor that the substrate is suitable for acceptance of the BluSeal Tekflex External Cement Latex Membrane System BLUSEAL TEKFLEX EXTERNAL CEMENT LATEX MEMBRANE SYSTEM The application of the membrane system can be via spray, brush, trowel or roller at a rate of 1kg/ m The two components of BluSeal Tekflex are mixed at a ratio of 1 part powder: 2 parts liquid by weight Measure and place the specified volume of BluSeal Tekflex liquid into the high sheer mixing vessel Start mixer and slowly add powder. If powder addition is too fast then large lumps will form and final mix will be slow reaching uniform consistency Following addition of all powder, mix for 1-2 minutes or until uniform consistency. Do not mix more material than can be placed in minutes. Do not add water at any stage of the mix Apply first coat of BluSeal Tekflex using a brush, roller, trowel or spray at a coverage rate of 1kg/m2 making sure that it is evenly coated to a minimum thickness of 1mm thick (2mm thick in strata/structural support applications). Allow to tack dry before over-coating Allow the BluSeal Tekflex coating to fully dry before applying the second coat at right angles to the first coat to ensure coverage at a rate of 1kgm2. For heavier usage protect with BluCemRF It is important to ensure no shadows are left unsprayed. When advancing during application, you must constantly check behind you to ensure all shadows have been sufficiently covered During application, regular depth checks must be conducted to ensure the correct thickness of Tekflex is being applied. A Wet Gauge is recommended for this purpose. BluSeal Tekflex 5

6 6.2. BLUSEAL TEKFLEX EXTERNAL CEMENT LATEX MEMBRANE SYSTEM (continued) Each coat shall give a Wet Film Thickness (WFT) of 1mm and 2mm in strata/structural support applications. If the total application thickness is to exceed 4mm then multiple coats shall be applied with each coat not exceeding 4mm to avoid cracking or splitting of the coat The second coat shall be applied directly onto the first coat once it has cured without any preparation other than the removal of any moisture, loose debris such as dust/grit that may have accumulated Clean tools and surfaces with water prior to curing The waterproofing membrane will accept foot traffic once it is cured, and where necessary will accept vehicular traffic with rubber tyres thereafter within 1 hour. However, to prevent unnecessary contamination vehicular traffic shall be avoided LAPPING Where new BluSeal Tekflex membrane is to be joined to an existing BluSeal Tekflex membrane, the new application shall be lapped onto the existing by a minimum of 500mm No preparation is necessary to the overlap unless the existing BluSeal Tekflex membrane system is more than 12 hours old Where the existing BluSeal Tekflex membrane is dirty or contaminated (greater than 12 hours old) the surface shall be cleaned using a suitable cleaning agent. Please consult Bluey Technologies P/L for approved cleaning agents and cleaning methodologies SYSTEM INSTALLATION CHECKS 7.1. The batch numbers and coverage rate/usage must be recorded for each batch applied MEMBRANE SYSTEM The WFT for each coat shall be checked every 10m2 using a Wet Gauge. The minimum measured WFT shall be 1mm per coat or 2mm for strata/structural applications. (See Section ) 6 Bluey Technologies

7 8.0. REPAIR OF DEFECTS 8.1. Pin/blow holes After application of each coat, any identified pin/blow holes shall be overcoated with BluSeal Tekflex membrane with an additional minimum WFT of 1-2mm per coat (See Section ) BLISTERS & DAMAGE Any blisters or damage shall be made good by cutting back to sound material, the periphery prepared if necessary as for lapping, and a repair coat of BluSeal Tekflex Membrane applied as per sections through ensuring a minimum peripheral lap of 500mm around the repair Where the damage is through to the substrate, the exposed substrate shall be first cleaned and then re-coated with BluSeal Tekflex Membrane INTEGRITY 9.1. The integrity of the BluSeal Tekflex membrane shall be confirmed by the Authorised Contractor after the second coat using a non-destructive electronic test method (spark testing) for waterproofing applications only Any Defects/pin/blow holes indentified in the waterproofing membrane shall be reinstated as in Section 8, and only the repaired areas re-tested DOCUMENTATION A site record shall be maintained for each day s production by the Authorised Contractor. The records shall be dated and numbered consecutively for each phase of a contract. These must be signed off by the Main Road authority/client Copies of the records shall be submitted by the Authorised Contractor to Bluey Technologies P/L at the completion of each contract Quality Assurance and Quality Control documents are to be submitted and approved by Bluey Technologies P/L prior to BluSeal Tekflex application. A copy of all Quality Assurance and Quality Control documentation is to be submitted to Bluey Technologies P/L at contract completion for review and analysis. BluSeal Tekflex 7

8 STATEMENT OF RESPONSIBILITY The technical information and application advice given in this publication is based on the present state of our best knowledge. As the information herein is of a general nature, no assumption can be made as to a product s suitability for a particular use or application and no warranty as to its accuracy, reliability or completeness either expressed or implied is given other than those required by Commonwealth or State Legislation. The owner, their representative or the contractor is responsible for checking the suitability of products for their intended use. NOTE: Field service where provided, does not constitute supervisory responsibility. Suggestions made by Bluey Technologies Pty Ltd either verbally or in writing may be followed, modified or rejected by the owner, engineer or contractor since they, and not Bluey Technologies Pty Ltd are responsible for carrying out procedures appropriate to a specific application. Bluey Technologies Pty Ltd Bluey Technologies Pty Ltd Australia & Asia-Pacific bluey@bluey.com.au