Freeze Thaw Tester for freezing in air and thawing in air or water. According to several European and international standards. Now with much more cooling power. Not only for concrete but also for natural stones and tile-glues. Including optional Internet connection and a flooding mechanism.
Bs En 12004 Pdf Free
The test requires four specimens obtained from four cubes. After 21 days a 50 mm thick specimen is sawed from each cube perpendicular to the top surface so that the saw cut for the test surface is located in the center of the cube. The specimens sized to 15 x 15 x 5 cm. After 25 days of concrete aging a rubber sheet is glued on all surfaces except the test surface. After 28 days, demineralized water of 3 mm depth is placed on the test surface for 72h. After 31 days, all surfaces except the test surface are thermally insulated with polystyrene foam plastic of 20 mm thickness. Then the demineralized water is replaced by the the freezing medium and the test surface is covered with a polyethylene sheet.
EN 1348:2007-12-31 This standard is withdrawn and replaced by the EN 12004-2:2017-05 Adhesives for tiles - Determination of tensile adhesion strength for cementitious adhesives. Here you need the option C0108 for the thawing procedure (immersed in water)
EN 12004-2:2017-05Adhesives for ceramic tiles - Part 2: Test methods Here you need the option C0108 for the thawing procedure (immersed in water). The specimen are frozen in 2 hours to -15C. This temperature is hold another 2 hours. The specimed are thawed inmersed in water at +15C for another 2 hours. After 25 cycles the tensile adhesion strength is measured.
EN 12091:2013Thermal insulating products for building applications. Determination of freeze-thaw resistanceHere you need the option C0108 for the thawing procedure (immersed in water)
In the chamber a stainless steel container with the dimensions of approx. 50 x 60 x 48 cm (w x d x h) is mounted (removable). A 2nd container will be placed outside and contains a pump and a heating unit. During freezing, the inner container is empty. To thaw the tempered water is pumped from the outer container into the inner container. Then the water keeps in the inner vessel. After the thawing period the water is drained again into the outer vessel. Time for flooding and emptying is free programmable.Whith this feature the Slabtester is suitable for testing of natural stones according to EN 12371, aggregates according to EN 1367-1, tile-glue according to EN 1348:2007 and others (see above).Order Code: C0108
The intervals are free programmable.Attention: The maximum testing wall size including the frame is 58 x 58 cm! This option requires additionally Natural Stone Option (C0108). An air pressure compressor (6bar) is included.Order Code: C01085
Add the powder to the water and mix for 3-4 minutes using a low-speed electric drill fitted with a suitable paddle until achieving a uniform, lump-free consistency. Allow the mixed material to stand for about 10 minutes and remix briefly without adding further water.
Quickmast EP500 is a chemical and abrasion resistant solvent free tile adhesive and grout ideal for demanding surface exposure or high traffic areas. Quickmast EP500 may be applied in conditions where the substrate is humid.
Abstract:This work attempts to draw attention to the importance of a multidimensional approach when creating standard requirements in the assessment of construction products with the example of ceramic tile adhesives (CTAs). CTAs are an essential group of building materials today, the continuous development of which has been noted since the 1960s. However, until 2001, i.e., the year when EN 12004 was published, there were no precise requirements for CTAs at the European level, which often made it difficult or, in extreme cases, even impossible to assess the product objectively. Under the provisions of EN 12004, for twenty years, the basis for the assessment and verification of constancy of performance (AVCP) of CTAs has been adhesion determined by tensile strength. The paper discusses the test methods, paying attention to their imperfections, including the impact of the materials used in measurements, i.e., concrete slab, ceramic tile, and water quality. The results of the multi-annual interlaboratory tests indicate that an essential factor that must be considered in the process of AVCP is test measurement uncertainty. Additionally, it should be remembered that uncertainty also occurs at other assessment levels. It also seems that the simple acceptance rule that does not consider the variability resulting from the measurement uncertainty is inadequate when assessing CTAs.Keywords: ceramic tile adhesive; measurements uncertainty; assessment of construction products; tensile adhesion strength; market surveillance
Tropical forest ecosystems are threatened by habitat conversion and other anthropogenic actions. Timber production forests can augment the conservation value of primary forest reserves, but studies of logging effects often yield contradictory findings and thus inhibit efforts to develop clear conservation strategies. We hypothesized that much of this variability reflects a common methodological flaw, simple pseudoreplication, that confounds logging effects with preexisting spatial variation. We reviewed recent studies of the effects of logging on biodiversity in tropical forests (n = 77) and found that 68% were definitively pseudoreplicated while only 7% were definitively free of pseudoreplication. The remaining proportion could not be clearly categorized. In addition, we collected compositional data on 7 taxa in 24 primary forest research plots and systematically analyzed subsets of these plots to calculate the probability that a pseudoreplicated comparison would incorrectly identify a treatment effect. Rates of false inference (i.e., the spurious detection of a treatment effect) were >0.5 for 2 taxa, 0.3-0.5 for 2 taxa, and
SikaCeram Wall Tile Grout is a powdered cement based, polymer modified joint filling compound for joints up to 3mm wide, which complies to BS EN 13888 and BS EN 12004 Type CG1. Suitable for internal and external locations and contains a built in biocide to protect against black spot mould growth.
Stir the base (component A) and the hardener (Component B) individually to disperse any settlement. Pour the entire contents of the base and hardener into a suitable size container and mix mechanically for 2 minutes. Add the Filler (component C) and mix for another 3 minutes until achieving a uniform, lump-free consistency.Application
2. The mortar for bedding the tiles is to consider of 1 part of cement to 4 parts of sand by volume, mixed in a mechanical mixer to a stiff plastic consistency so that when tamped and fully compacted into place free water does not bleed to the surface. 2ff7e9595c
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