Construction Chemicals

Transcription

1 Introduction Construction Chemicals The following section includes details of selected Ramset typically of interest to specifiers. The name Ramset is synonymous with Quality, and the Ramset product range is no exception. Ramset Construction Chemical products are made to exacting quality standards to ensure reliability and consistency. Ramset are tested to Australian Standards such as AS fire rating to ensure compliance with the BCA. The products selected for this section are grouts for structural underpinning and sealants for fire and acoustic rated partitions and facades

2 Overview 35.1 ESTIMATING CHART Lineal Metres per 960 g (600m ml) Sachet (Approx) Depth (mm) x x x x x x x x x x x x x x x x 0.5 Lineal Metres per 450 g (300m ml) Cartridge (Approx) Joint Nominal Joint Width (mm) Depth (mm) x x x x x x x x x x x x x x x x 0.3 Coverage based on nominal dimensions "--" Shallow joint. Risk of sealant tearing. Make joint deeper. "x" Joint depth > width. Risk of sealant tearing. Adjust depth with backing rod. Refer above for correct joint design details JOINT CONFIGURATION & DESIGN Configuring Joints in Concrete Structures for Optimum Sealant Performance General Details Movement of joints in concrete structures is caused by: The factors that cause joints to open are the most significant when optimising joint design for sealants. Because joints move, sealants must be elastic and flexible to avoid splitting, tearing and loss of adhesion. A sealant s flexibility is defined by its strain capacity, expressed as a percentage change in nominal joint width. Correct Joint Configuration Joint Configuration The shape of the sealant within a joint influences its ability to stretch with movement. Correct Width to Depth Ratio Joint Width 6mm to 10mm 10mm to 20mm 20mm to 50mm Joint Depth Equal to joint Width 10mm Equal to 1 / 2 joint Width Ch f d C t

3 35.2 Overview 35.2 JOINT CONFIGURATION & DESIGN (cont) Incorrect Joint Configuration Joint Betw Prec Conc Pane Joint Design Following is a simple, conservative method for calculating minimum joint width. For more accurate and rigorous treatment, consult the references listed below. Minimum Joint Width, L min = 100 / Sealant Strain Capacity x L (1 L = Anticipated joint movement L = L t + L cs.(2 L t = Change in Joint Width due to Temperature Change (mm) L cs = Change in Joint Width due to Concrete Shrinkage (mm) nt in oor ress row Joint L t = L x c.temp x T.(3 L = Joint Spacing (mm) c. temp = Coefficient of Concrete Thermal Expansion (mm/mm C) Joint Width Joint Depth T = Change in Temperature ( C) 6mm to 10mm Equal to joint Width 10mm to 20mm 10mm L cs = L x cs..(4 L = Joint Spacing (mm) 20mm to 50mm Equal to 1 / 2 joint Width cs = Concrete Shrinkage Strain = 850 x 10-6 mm (Conservative. Refer AS3600 Clause for accurate values) In this simple method, effects that cause joints to close are ignored, as they do not impart tensile strain on the sealant. For example concrete creep and temperature increase cause joints to close resulting in compression of the sealant. Worked Example: Concrete Panel Width = L = 4m, Thickness = 150mm, Installation Temperature = 30 C, Minimum Temperature = 5 C. Sealant = Ramset HiSeal, Strain Capacity = ± 25%, c.temp.temp = 12 x 10-6 mm/mm C, cs = 850 x 10-6 mm L t = 4 x 1000 x 12 x 10-6 x (30 5 C) = 1.2 mm L cs = 4 x 1000 x 850 x 10-6 = 3.4 mm L min = 100 / 25 x ( ) = 18.4 mm Sealant Description Strain Capacity HiSeal 1-Part Polyurethane Construction Sealant ± 25% FyreBrake 1-Part Polyurethane Fire Rated Sealant ± 25% Roof Seal 1-Part Neutral Cure Silicone Roofing Sealant ± 25% Joint Seal 1-Part Neutral Cure Silicone Construction Sealant ± 25% Glass Seal 1-Part Acetic Cure Silicone Glazing Sealant ± 25% Water Seal 1-Part Acetic Cure Silicone Mould Resistant Sealant ± 25% BlazeBrake 1-Part Fire and Acoustic Rated Acrylic Sealant ± 15% DynaSeal 1-Part Urethane-Acrylic Construction Sealant ± 20% Gap Seal 1-Part Acrylic Painters Sealant ± 6% References AS , Concrete Structures Standards Australia Precast Concrete Handbook National Precast Concrete Association Australia 2002 Warner et al 1998 Concrete Structures, Addison Wesley Longman Australia Ramset does not give any representation, guarantee or warranty, express or implied that the information is or will be complete or accurate or that it has been or will be independently verified. To the extent permitted by statute, Ramset its servants and its agents will not be liable (whether in negligence or other tort, by contract or under statute) in respect of any loss or damage (including consequential loss or damage) arising by any reason of or in connection with the provision of the information or by purported reliance on it.

4 Epoxy Grout 36.1 GENERAL INFORMATION Product Ramset Epoxy Grout is a tough epoxy resin based grout for use in pourable form or for mixing with graded sand filler to produce a trowellable consistency. Epoxy Grout is 100% solids epoxy with negligible shrinkage. Benefits, Advantages and Features High flow properties good bonding and penetration Bonds to dry and damp concrete Pre-measured kits to avoid measuring errors High tensile and compressive strength 100% solids epoxy solvent free and negligible shrinkage Cures at temperatures down to 5 C High mechanical strength Resistant to vibration and dynamic loads Add graded sand to change consistency 36.2 TYPICAL PROPERTIES Unfilled Epoxy Grout Typical properties after 7 days cure at 25 C and 50% relative humidity A: Grey thixotropic liquid Appearance Part Part B: Amber liquid Grey when mixed together Viscosity Flowable, pourable Flammability Non flammable Solid content by weight 100% Tensile strength 30 MPa approx. Compressive strength 110MPa approx. Flexural strength 25 MPa approx. Tensile bond strength 10 MPa approx. Modulus of elasticity 4.5 x10 3 MPa Service temperature -10 C to +65 C Heat distortion temp 80 C approx. Hardness >80Shore D Pot life C Tack free time C Mix ratio 5:1 (part A:B) by volume Min. Application temp. 5 C Max. Application temp. 35 C Density 1.53 kg/litre Water absorption* <0.2% (10 days Full cure 7days at 25 C *Tested to ASTM D570 Epoxy Grout Mixed with Ramset Fillers FG Consistency Volume of Weight of Yield of Pot Compressive Tensile Flexural Epoxy Fillers FG Mixture 20 C 7 Grout (Litres) (Kg) (Litres) (Minutes) days (MPa) 7 days (MPa) 7 days (MPa) Fluid Pourable Trowellable Dry Pack For safety directions precautions and general preparation please refer to the technical data sheet available on the Ramset website

5 Epoxy Grout 36.3 CURING Epoxy Grout will achieve about 80% of its final cure strength in 24 hours and will achieve full strength in 7 days. Remove formwork and apply full torque to bolts after 24 hours ANCHOR INSTALLATION WITH EPOXY GROUT Installing Threaded Rod and Reinforcing Bar into Solid Concrete with Ramset Epoxy Grout Recommended Epoxy Grout Hold Down Bolt, Threaded Rod and Reinforcing Bar Installation Guide Parameter Minimum Maximum Drilled Hole Diameter Threaded Rod, d h Rod / Bar diameter (d b ) + 2 mm 2 x d b Drilled Hole Diameter Reinforcing Bar, d h d b +5mm 2xd b Effective Hole Depth, h 8 x d b Critical Edge Distance, e c 3xh Critical Anchor Spacing, a c 6xh Depth of Concrete Substrate, b m 1.25 x h More information on Anchoring Technology go to pages Installing Ferrules into Solid Concrete with Ramset Epoxy Grout To create a post installed internally threaded fixing, Ramset have developed a method of installing ferrules into solid concrete with Epoxy Grout instead of the traditional cast in method. Ferrule Size, d b x L (mm) Part Number Drilled Hole Diameter, d h (mm) Hole Depth, h (mm) Edge Distance, e c, (mm) Anchor Spacing, a c (mm) Substrate Thickness, b m (mm) M12 x 95 FE12095(GH) M16 x 95 FE16095(GH) M20 x 95 FE20095(GH) Available in zinc galvanised or hot dipped galvanised (GH) carbon steel For more information on Ferrules contact your local Ramset Engineer. Working Load Limits in Tension of Ferrules installed in Solid Concrete with Ramset Epoxy Grout Ferrule Size, d b x L (mm) Tension, N a (kn)* Concrete Compressive Strength, f c (MPa) 20 MPa 32 MPa 40 MPa M12 x M16 x M20 x * Working Load Limit (WLL) = Lower Characteristic Ultimate Concrete Tensile Load Capacity (N uc )/ 3 are limited by concrete cone capacity. Check tensile capacity of bolts to determine if fixing load capacity is limited by steel steel shear capacity. contact a Ramset engineer for further advice 36.5 DESCRIPTION AND PART NUMBERS Pack Size Order Number 1 Litre EPGRL1 4 Litres EPGRL4 16 Litres EPGRL16

6 37.1 Premier Grout MP 37.1 GENERAL INFORMATION Product HIGH STRENGTH PREMIER GROUT MP will not shrink making it ideal for filling holes and voids in concrete for installing and repairing posts, bolts, pipe penetrations or structural underpinning. Premier Grout MP is a Class A, non shrink cement grout that complies with AS MP20, Part 3 (1977). The product consists of a speciality blend of cement, graded aggregate and other chemically reactive agents. Premier Grout MP does not contain any ferrous material or Calcium Chloride. Premier Grout MP is supplied in 20kg Bags as a ready to use dry powder. The addition of different amounts of clean water will produce a range of non-shrink grouts for placement at thicknesses of 10mm to 150mm in a single application. Benefits, Advantages and Features High Strength Non-shrink - Good dimensional stability - Complete void filling Versatile - Can be dry packed, rammed, trowelled, poured and pumped over short distances Economical, low in-place cost Ready to use, pre mixed, requires only the addition of water. Non-staining chloride and iron free Lower water/cement ratio - Reduced drying shrinkage - Increased hardness and durability - Reduces permeability 37.2 TYPICAL PROPERTIES Litres of water per 20kg bag Consistency Dry Pack Trowellable Flowable Range *Test Levels * Refers to the water content used to carry out performance testing as indicated in the tables below. Setting Times - Vicat setting times at 20 C Dry Pack Trowellable Flowable Initial Set 1.5 hours 1.5 hours 1.5 hours Final Set 4.0 hours 4.0 hours 4.0 hours Time for - Start (plastic state) 30 minutes 30 minutes Expansion - Finish (plastic state) hours hours Unrestrained Expansion - >2% >1.5% Bleeding 0% 0% 0% Test Methods:

7 Premier Grout MP 37.2 TYPICAL PROPERTIES (Cont) Compressive Strength - Tested in accordance with AS1012.9, AS2073 at 20 C Age Dry Pack Trowellable Flowable 1 day days days days Flexural Strength - Tested in accordance with ASTM C at 20 C Age Trowellable 1 day 8.5MPa 7 days 11.0MPa Yield - Approximate yields obtained if mixed in accordance with recommended procedures with accurately measured water content. Dry Pack Trowellable Flowable Litres per 20kg bag Fresh Wet Density ~kg/m 3 1,950 1,800 1,750 Bags required per cubic metre CURING Prevent moisture loss of hardened grout by applying water to the surface or covering exposed grout with wet Hessian, plastic sheeting or Ramset Concrebond or other curing compound. Keep grout thoroughly moist for a minimum of 48 hours to prevent drying shrinkage and cracking. If required remove formwork after 24 hours and protect exposed grout from moisture loss as described above. High wind conditions will affect the drying surface of grout; take precautions to protect the material from prevailing weather DESCRIPTION AND PART NUMBERS Pack Size: 20kg paper bag Order Number: RPGMP

8 Notes