255 results about "Substrate (building)" patented technology

The utility model discloses a rapid deviation rectifying and reinforcing support pile for a building foundation pit, and belongs to the technical field of foundation pit support. A building foundation pit rapid deviation rectifying and reinforcing supporting pile comprises a supporting plate, a supporting pile body, a supporting pile body and a reinforcing pile body. The supporting plate forms a supporting face abutting against the wall of a foundation pit; a substrate; the telescopic assembly is connected with the supporting plate and the base plate; the inserting and fixing assembly is fixedly arranged on the base plate, and the inserting and fixing assembly comprises an inserting rod fixedly arranged on the bottom surface of the base plate; the reinforcing rod is rotationally arranged on the inserting rod; the push rod is movably arranged on the insertion rod; wherein a hinge rod is rotatably arranged on the reinforcing rod, and the hinge rod is rotatably connected with the push rod, so that when the push rod moves, the hinge rod can drive the reinforcing rod to rotate. The rapid deviation rectifying and reinforcing support pile for the building foundation pit has the beneficial effect that the stability is better.

The utility model relates to a ground flatness measuring tool, which relates to the technical field of building construction measurement and comprises a measuring base plate, a moving roller assembly arranged on the measuring base plate, a measuring box arranged on the measuring base plate, a display screen arranged on the measuring box and a measuring central control assembly arranged in the measuring box and electrically connected with the display screen. The measurement box is provided with a measurement mechanism matched with the measurement center control assembly, and the outer side of the measurement box is provided with a visual observation mechanism used for visually measuring the inclination angle of the substrate; the measuring mechanism comprises a measuring assembly which is arranged in the detection box and makes contact with the ground, the measuring assembly is used for ground flatness detection, and a resistance linkage assembly used for linkage of the measuring assembly and the measuring center control assembly is arranged in the measuring box. According to the utility model, through optimizing the design of the measuring assembly, such as the cooperation of the measuring rod and the limiting slide block, and the application of the resistor linkage assembly, the detection precision of the tiny fluctuation of the ground is improved, and occasions with high flatness requirements are satisfied.

The present invention relates to a rotating device for integration in a substrate, preferably in a building floor element, more particularly in a screed floor, having at least three support units, which can be arranged individually in the circumference of the substrate within a circular area about an axis of rotation, a rotating plate which extends at least over the circular area and has a room side and a bearing side opposite the room side, a rotary bearing unit, and at least one drive apparatus, wherein the rotating plate is rotatably mounted in the axis of rotation and the at least three support units support the rotating plate in a rotationally movable manner in the orientation of the axis of rotation in a vertical axis on the bearing side, and wherein the drive apparatus is configured to set the rotating plate in rotation about the axis of rotation.

The invention relates to a protective material for building decorative boards, which comprises 55-60% of a main film-forming system, 8-10% of a nanometer functional filler, 12-15% of a functional auxiliary agent, and 15-35% of a carrier and a conditioning agent, and the construction steps of the protective material for building decorative boards comprise base material pretreatment, coating construction, curing and quality inspection. According to the protective material for the building decorative plate and the construction method, the fluorocarbon modified acrylic resin and the organic silicon-acrylic hybrid emulsion are adopted for upgrading a base material, the nano titanium dioxide is added to realize ultraviolet shielding, the graphene is added to realize crack propagation resistance, the weather resistance of the material is improved, the deionized water is used for replacing a traditional solvent, and the cost is reduced. The self-cleaning capacity can be improved by adding hydrophobic nano silicon dioxide, silicon dioxide is added into an intumescent flame-retardant system to serve as a physical anchoring point, and the flame-retardant property of the material is further improved.

A tape for applying to a building surface prior to painting with an architectural paint having a color and a texture in which the tape remains in place after completion of the painting is described. The tape includes a substrate sheet, a pressure sensitive adhesive, and a coating. The tape is configured such that a portion of the coated side of the tape has a color and a texture that is similar or the same as the color and texture of the architectural paint. In this way, the portion of the building surface covered by the tape produces the general appearance and feel of the painted building surface after completion of the painting.

The invention relates to the technical field of coatings, in particular to a solvent-free anti-doodling cover agent as well as a preparation method and application thereof. The solvent-free anti-doodling finishing agent is prepared from the following raw materials in percentage by mass: 80 to 95 weight percent of solvent-free methyl phenyl silicone resin, 1 to 5 weight percent of a curing agent, 3 to 8 weight percent of an adhesion enhancer, 0.5 to 3 weight percent of an anti-doodling auxiliary agent and 0 to 6 weight percent of an optional delustering agent. The core is that the adhesion enhancer is an enhanced silane coupling agent and is prepared by carrying out molecular-level chemical bonding on a titanium compound, the silane coupling agent and a self-made antifouling agent. The finishing agent disclosed by the invention has the advantages of high adhesive force, excellent stain resistance, adjustable glossiness and the like, and is suitable for base material protection of various scenes such as building outer walls, household crystal plating and artistic coatings.

A textured barrier substrate includes a substrate having a first side and a second side opposing the first side. One or more protrusions extend from the second side. The first side is configured for securing to a first building structure, such as a joist, and the protrusions are configured to contact and support a second building material, such as flooring.

The invention relates to the technical field of energy-saving building materials, and discloses a multi-layer composite sunshade film with a self-cleaning function, which sequentially comprises a release film layer, a bonding layer, a base material layer I, a spectrum functional layer, a base material layer II and a self-cleaning layer from inside to outside, the raw material of the spectrum functional layer comprises at least one of an infrared absorbent, a visible light absorbent and an ultraviolet absorbent; the self-cleaning layer is a modified layer obtained by modifying the surface of the base material layer II through fluorosilane. According to the sunshade film, the energy-saving performance of a building can be greatly improved, so that the maintenance cost is reduced, and the sunshade film is suitable for being used outdoors for a long time and can also be attached to the outer surface of the building for use.

The invention discloses a building material base material produced by utilizing household garbage incineration waste and a preparation process of the building material base material. The base material is prepared from the following components in percentage by weight: 30 to 50 percent of fly ash, 20 to 40 percent of bottom slag, 10 to 20 percent of Portland cement, 3 to 10 percent of Fe-N-C-coated Cu-NPs modifier and 5 to 15 percent of water. Fly ash is subjected to water washing and 600-800 DEG C heat treatment to remove chlorine salt and organic matter, and bottom slag is subjected to screening and magnetic separation to control the particle size and the iron content. Fe-N-C-coated Cu-NPs is prepared through high-temperature pyrolysis and a wet chemical method, and dioxin decomposition and heavy metal solidification are catalyzed. The preparation process comprises the steps of pretreatment, mixing, vibration molding (5-10 MPa) and wet curing (20-35 DEG C, 80-95% humidity and 7-21 days). The compressive strength of the base material reaches 11.8-14.0 MPa, the dioxin content is lower than 0.1 ng-TEQ / kg, the heavy metal curing rate is 96.5-98.5%, the porosity is 10.5-12%, solid waste resource utilization is achieved, and environmental protection and economic benefits are achieved.

The present invention relates to the technical field of building materials, and discloses a seawater-resistant calcium ferrite cement concrete and a preparation method thereof, which are obtained by using bis[3-(trimethoxysilyl)propyl]amine, perfluorohexylethylene, and 3-bromopropene as raw materials, through addition and quaternization reactions, polymerizing with acrylic monomers, and then compounding with calcium ferrite cement, composite steel slag powder, and modified basalt fibers, etc.; the fluorinated quaternary ammonium salt siloxane modifier has relatively rich siloxane bond functional groups on the surface of the siloxane, which can undergo a condensation reaction with the silanol groups on the surface of the concrete substrate after hydrolysis, effectively filling the pores and cracks in the concrete material; the composite steel slag powder admixture has fine particles, which can make the system structure filled more tightly and improve the ability to hinder the penetration and diffusion of Cl ‑ ions; the modified basalt fibers improve the dispersion stability in the matrix and further improve the seawater erosion resistance of the concrete.

The invention provides a deep-absorption UV (ultraviolet) gloss oil composition for a scratch-resistant and doodling-resistant PVC (polyvinyl chloride) building material mask and a preparation method of the deep-absorption UV gloss oil composition, the deep-absorption UV gloss oil composition comprises a UV curing resin system, a reactive diluent 1, 6-hexanediol diacrylate, a specific photoinitiator compound system, a nano-scale scratch-resistant and wear-resistant filler, a fluorine-modified organic silicon anti-doodling aid and other aids, and the deep-absorption UV gloss oil composition does not contain matte powder. The preparation method comprises the following steps: coating a PVC building material mask base material with the UV gloss oil composition, covering an ultra-matte pressed film, then carrying out film pressing treatment to copy an ultra-matte surface structure and isolate oxygen, then carrying out sectional curing by adopting LED-UV lamps with different wavebands, and finally stripping the pressed film. Through collaborative innovation of a formula and a process, an extreme ultra-matte effect of which the glossiness is lower than 1.2 GU can be obtained without adding matte powder, meanwhile, the hardness of a coating can reach 5H or above, and the coating has excellent scratch-resistant and doodling-resistant performance, and is high in curing efficiency and environment-friendly in process.

The application belongs to the technical field of polymer coating, and particularly relates to an organic-inorganic hybrid coating and application thereof in preparation of a surface coating of building decoration materials. The organic-inorganic hybrid coating mainly comprises photocuring resin, photocuring monomer, epoxy resin, modified diamond nanosheet, modified zirconium oxide coated aluminum oxide and photoinitiator. The photocuring resin, photocuring monomer and epoxy resin endow the coating with good toughness and rigidity, and the modified diamond nanosheet and modified zirconium oxide coated aluminum oxide serve as wear-resistant fillers to endow the coating with good wear resistance. The organic-inorganic hybrid coating has strong adhesion strength to the building material substrate, and has high gloss, gloss uniformity, scratch resistance, wear resistance and impact resistance, can replace the traditional sintered glaze layer, reduce energy consumption and improve product quality, and can be used as a coating for surface decoration of building decoration materials to replace the traditional glaze layer.

A device for securing and monitoring load-bearing elements (1) in building structures contains textile reinforcing material (2) and sensors (6, 7, 8, 9) combined at equal intervals with the textile reinforcing material (2), one of the surfaces of which is covered with a malleable mass polyurethane (4). Fiber optic sensors (6), accelerometers (7), strain gauges (8), linear displacement transformer sensors (9) in a differential arrangement (LVDT) are used. The method of securing and monitoring load-bearing elements in building structures using this device is to clean, dry and remove dust from the protected surface of the load-bearing element (1), then prime it with a polyurethane primer, and then glue the securing and monitoring device.After the elastic polyurethane mass (4) is completely bonded to the substrate, the positions of individual sensors (6, 7, 8, 9) on the load-bearing element (1) are determined on the protected surface of the load-bearing element (1) and their positions are entered into the system monitoring the condition of the building structure. Then measurement data from individual sensors (6, 7, 8, 9) are recorded at given time intervals and the status of the monitored load-bearing element (1) is determined on an ongoing basis. In a variant of the method, before the stage of cleaning, drying and dedusting the protected surface of the load-bearing element (1), at least one groove is made in it along the direction of its operation, and then, after placing the securing and monitoring device in the groove, it is filled with a single-component, preferably with a setting accelerator, or with a two-component, malleable polyurethane mass (4) and protected against leakage with an adhesive tape, which is removed after the filling of the malleable polyurethane mass (4) has set.

The invention relates to the technical field of building materials, and discloses a composite floor sound insulation board and a preparation method thereof, and the preparation method comprises the four core steps of base material pretreatment, honeycomb structure forming, PP non-woven fabric compounding, post-treatment and cutting. The composite floor sound insulation board prepared by the method comprises an HDPE substrate, a honeycomb structure layer, an epoxy resin adhesive layer and a PP non-woven fabric layer which are sequentially compounded. Tests show that the weighted sound insulation index is larger than or equal to 55 dB in the frequency band of 100 Hz to 5000 Hz, the heat conductivity coefficient is stabilized to be 0.028 W / mK to 0.035 W / mK, the interlayer bonding strength is larger than or equal to 1.5 MPa, the sound insulation and heat insulation performance and the structural durability are excellent, the compatibility of the preparation technology is high, and the sound insulation and heat insulation composite board is suitable for being used in the building. The technical problems that an existing floor sound insulation board is poor in preparation process stability, insufficient in product sound insulation performance, large in heat conductivity coefficient fluctuation and prone to failure of interlayer bonding can be solved, and the floor sound insulation board is suitable for large-scale production and can be widely applied to floor sound insulation projects of residences, office buildings and other buildings.

A waterproofing curable composition, method of use, and building product containing such composition is provided. The curable composition, upon cure, exhibits strong adhesion to the construction substrates on which it is applied as well as to concrete cast upon the cured membrane, producing a continuous and fully bonded waterproof system, even though different surfaces and surface textures are presented at the surface-to-surface joinder among various components within a pre-applied waterproofing construction site.

The invention discloses a hydrogel-based energy-saving building structure and a preparation method thereof, and relates to the field of functional hydrogel. The energy-saving building structure is used for isolating a first space and a second space, the first space has a first environment temperature, and the second space has a second environment temperature; the energy-saving building structure comprises a first substrate, a first hydrogel layer, an isolation layer, a second hydrogel layer and a second substrate which are arranged in a stacked mode. The first hydrogel layer has a first phase change temperature and a second phase change temperature, and when the first environment temperature is below the first phase change temperature or above the second phase change temperature, the first hydrogel layer is in a non-transparent state; when the first environment temperature is between the first phase change temperature and the second phase change temperature, the first hydrogel layer is in a transparent state; when the temperature difference between the first environment temperature and the second environment temperature is larger than or equal to a preset threshold value, the second hydrogel layer can conduct thermoelectric conversion. According to the energy-saving building structure, annual bidirectional heat management and continuous thermoelectric energy conversion can be achieved.

The application provides a building rectification method based on substrate water jetting, and belongs to the technical field of building rectification. In view of the problem that building rectification cannot simultaneously consider high efficiency, low cost and high safety, the application comprises the following steps: S1, multiple pile pressing holes are arranged on a building raft plate at intervals of 2-3 m; S2, a high-pressure water pipe and a first high-pressure gas pipe are prepared, both pipes are vertically inserted into each pile pressing hole for water jetting and gas jetting, so as to form a primary collapse area, so that the raft plate at the corresponding position is settled; S3, a second high-pressure gas pipe is prepared, the bottom of the second high-pressure gas pipe is bent to form a horizontally extending end, and the second high-pressure gas pipe is inserted into each primary collapse area for horizontal gas jetting, and the high-pressure water pipe is used for water jetting, so that the adjacent primary collapse areas are horizontally connected, and a final collapse area is formed, so that the raft plate at the corresponding position is settled faster; and S4, after the settlement rectification is in place, pile foundation construction is performed. The application utilizes the pile pressing hole and two-step water jetting+gas jetting process, improves the rectification efficiency, controls the cost, and improves the safety in the construction process.

This invention relates to the field of building construction technology and discloses a method for constructing drainage systems on basement roofs. The method includes the following steps: pre-treating the basement roof slab substrate; applying a waterproof coating to the pre-treated substrate; applying a waterproof membrane over the waterproof coating; laying a non-woven fabric over the waterproof membrane for isolation; pouring a protective layer over the non-woven fabric; and leaving drainage ditches on both sides of the junction between the basement roof slab and the main building, and on both sides of the post-cast strip. This invention utilizes the junction line between the basement roof slab and the main building, as well as the post-cast strip, as partition boundaries to divide the basement roof slab into several drainage areas. Within each drainage area, a slope is created from the center towards the drainage ditch, allowing water to quickly converge into the ditch. Simultaneously, the slope created by the waterproof mortar within the drainage ditch and its connection to the surrounding open ditches form a continuous drainage path, thereby significantly improving drainage efficiency and effectively avoiding water accumulation on the roof slab due to excessively long drainage paths.

This invention belongs to the field of building materials technology, specifically disclosing a sound-absorbing porous foamed concrete composite board and its preparation method. Using foamed concrete as the substrate of the composite board effectively solves the problem of poor environmental performance of traditional sound insulation materials. Compared with materials such as polystyrene and sound-absorbing rock wool, it does not require a large amount of energy for preparation and can utilize recycled raw materials. It does not produce toxic powder after aging, reducing harm to the air environment and human health, while also avoiding the flammability hazards of traditional materials. The closed-cell sound insulation layer's sealed pores can block direct sound wave penetration, achieving basic sound insulation. The sound-absorbing pores of the porous sound-absorbing layer, combined with the interconnected channels, introduce incident sound waves into the interior. Energy is dissipated through reflection and friction within the channels, forming a dual protection of "sound absorption and sound insulation." This solves the core problem of poor sound insulation performance of traditional concrete and compensates for the short lifespan of traditional sound insulation materials, extending the overall service life of the board.

A tape for applying to a building surface prior to painting with an architectural paint having a color and a texture in which the tape remains in place after completion of the painting is described. The tape includes a substrate sheet, a pressure sensitive adhesive, and a coating. The tape is configured such that a portion of the coated side of the tape has a color and a texture that is similar or the same as the color and texture of the architectural paint. In this way, the portion of the building surface covered by the tape produces the general appearance and feel of the painted building surface after completion of the painting.

Disclosed herein is an acoustic building panel including a substrate having a first major surface opposite a second major surface and a side surface extending therebetween. The substrate includes inorganic material present in an amount ranging from about 20 wt. % to about 80 wt. % based on the total dry-weight of the substrate, organic recycled material present in an amount ranging from about 20 wt. % to about 80 wt. % based on the total dry-weight of the substrate, and a binder present in an amount ranging from about 5 wt. % to about 15 wt. % based on the total dry-weight of the substrate. The acoustic building panel further includes a plurality of indents extending from the second major surface toward the first major surface.

A cladding system configured to be installed on a building substrate includes a plurality of fiber cement cladding elements and at least one trim element. The plurality of fiber cement cladding elements includes at least a first and second cladding element, each having a front face with a textured pattern, a rear face, first and second mating edges configured to allow mating between the first and second cladding elements, and a plurality of intermediate grooves recessed from the front face. The at least one trim element includes one or more channels configured to receive a portion of at least one of the first and second cladding elements. Each of the plurality of grooves includes a first curved surface, a second curved surface, a third curved surface, a fourth curved surface, and a planar surface positioned between the second and fourth curved surfaces and substantially parallel to the front face.

The utility model discloses anti-smashing glass with fireproof performance, which belongs to the technical field of glass and comprises a plurality of anti-smashing glass substrates arranged at equal intervals, an outer frame is mounted on the outer sides of the anti-smashing glass substrates, and a plurality of anti-smashing glass substrates are mounted on the outer frame. The outer frame is provided with clamping grooves clamped with the edges of the anti-smashing glass substrates, the two anti-smashing glass substrates can be sealed into a whole through the hollow rubber, then a cavity between the two anti-smashing glass substrates is filled with inert gas, and the molecular sieves filled between the hollow rubber and the hollow aluminum strip have the effects of adsorbing water vapor, drying air, preventing dust and the like. The glass has the anti-fog effect, the fireproof adhesive tape is installed on the outermost side of the combination portion between the two anti-smashing glass substrates, flame, heat and smoke are prevented from penetrating through a sealing gap, finally, the anti-smashing glass substrates are packaged through the outer frame, and it is guaranteed that a building has good isolation and safety protection effects when a fire breaks out.

The utility model discloses a building heat preservation structure based on reflective heat insulation paint, which comprises a base plate, the base plate is made of a vacuum heat insulation plate, the right side of the base plate is fixedly provided with a coating, the coating is made of the reflective heat insulation paint, the coating is provided with a cleaning assembly, the cleaning assembly comprises a rotating shaft, and the rotating shaft is provided with a rotating shaft. The rotating shaft is arranged in the center of the right side of the coating, and one end of the rotating shaft is inserted into the plate wall of the base plate and rotationally connected with the base plate and the coating through bearings. When the improved building heat preservation structure is used, if strong airflow exists around the coating, airflow flowing outside a building pushes the impeller to rotate so as to drive the rotating shaft to rotate synchronously, at the moment, due to the fact that the limiting mechanism restrains and limits the brush plate, the rotating shaft drives the brush plate to slide in the mode of being attached to the coating through the connecting mechanism; therefore, most dust and sundries attached to the coating are swept down, the cleaning frequency of the coating can be greatly reduced, and the use cost of the building heat preservation structure is reduced.

The invention discloses a kale growth substrate based on construction waste and a preparation method thereof, and belongs to the technical field of fertilizer synergism. On the basis of preliminarily reducing the salinity and alkalinity of waste concrete and waste brick particles in the substrate, gypsum powder, elemental sulfur and complex microbial inoculant bacteria are adopted to continuously acidify an alkali source in the substrate, so that the content of the alkali source in the substrate is reduced; and residual salt is locked by adopting a nutrient slow-release film, so that the effect of rapidly and persistently reducing alkali and salt of the construction waste particles is realized, and a slightly acidic and low-salt root system environment is provided for the growth of the kale. According to the kale growth substrate based on the construction waste, the pH value is maintained to be 6.2-6.7, the EC value is as low as 1.0 mS.cm <-1 >-1.4 mS.cm <-1 >, the ventilation porosity is larger than or equal to 18%, the water holding porosity is larger than or equal to 45%, total nitrogen is 1.8 g.kg <-1 >-2.2 g.kg <-1 >, available phosphorus is larger than or equal to 35 mg.kg <-1 >, and available potassium is larger than or equal to 250 mg.kg <-1 >.

A method to manufacture a bevel at least partly along at least one edge of a building panel, such as a floor panel or wall panel, where the building panel comprises a substrate having an inorganic filler of an amount of 50-85 wt % and a polymer-based material. The method comprising heating at least an edge portion of an edge of the building panel, along which edge the bevel is to be formed, and forming the bevel in said edge portion by applying pressure to said portion, where the bevel is at least partly formed in the substrate.

The invention discloses an aluminum frame cladding plate, a curtain wall and a building. The aluminum frame cladding plate comprises an aluminum alloy frame, a plastic-wood cladding plate and a layered buffer structure. The surface of a base plate of the plastic-wood laminated plate is subjected to plasma electrolytic oxidation to generate a ceramic layer, micron-sized grooves are formed through laser microtexturing, and a base material is compounded on the surface of the base plate through a polyurethane or epoxy resin hybrid adhesive. A cavity is formed between the cladding plate and the aluminum alloy frame, and is filled with a layered buffer structure consisting of a silicon rubber sheet and a hydrophobic aerogel film. The curtain wall comprises a stand column, a cross beam, a connecting piece and the aluminum frame cladding plate, the stand column is provided with a vertical sliding groove, the connecting piece comprises a sliding block, a belleville spring and a fixing bolt, the sliding block is embedded into the vertical sliding groove and fixed through the fixing bolt, the belleville spring extends into the installation groove of the adjacent aluminum frame cladding plate, and elastic connection of the upper aluminum frame cladding plate and the lower aluminum frame cladding plate is achieved. The curtain wall is suitable for building facades and has impact resistance, heat insulation and earthquake resistance.

The utility model discloses a novel composite flame-retardant insulation board, which relates to the technical field of building boards and comprises a first base plate and a second base plate, an insulation inner plate is fixedly mounted on the bottom side of the first base plate, reinforcing strips are arranged between the insulation inner plate and the first base plate, and insulation materials are filled among the reinforcing strips. A reinforcing net is arranged on the bottom side of the heat preservation inner plate. The first base plate and the second base plate are fixedly connected in a threaded mode by matching the bottom ends of the connecting bolts with the reinforcing bases, the connecting stability between the first base plate and the second base plate can be improved, and therefore the overall structural fastening performance of the heat preservation plate is enhanced; and the moisture-proof layer is made of the pearl wool composite aluminum film, so that the moisture-proof and water-proof performance of the whole heat insulation board can be effectively improved, and further the situation that the heat insulation board is damaged due to damp in the using process and the service life is shortened is avoided.

The utility model relates to the technical field of building decoration materials, and discloses an environment-friendly decorative plate for indoor decoration, which comprises an outer frame, an environment-friendly mechanism is mounted on the inner wall of the outer frame and used for improving the water resistance and deformation resistance of the decorative plate, and mounting mechanisms are mounted on the front side and the rear side of the outer wall of the environment-friendly mechanism. And the mounting mechanism is used for conveniently mounting the decorative plate. The aluminum alloy keel material forms a net structure and a space stress system, loads can be transmitted in multiple directions, single-point stress concentration is avoided, the base material layer is formed by pressing bamboo and wood fibers and environment-friendly adhesives, the environment-friendly performance is excellent, formaldehyde release is avoided, the reinforcing layer is the glass fiber gridding cloth, the reinforcing layer is compounded with the base material layer through the hot pressing technology, and the heat insulation performance is good. And the finish coat is a water-based UV coating and covers the surface of the enhancement layer through a spraying process, so that the water resistance and the deformation resistance are high, and the water-based UV coating is suitable for a humid environment.