An RC lattice beam is provided that can greatly dampen the transfer of vibrations in particular. As the concrete included in the RC lattice beam is polymer concrete that contains a polymer, fine-scale vibrations that may otherwise affect exposure apparatuses may be effectively dampened, while the depth of the conventional lattice beam may be kept the same. Thus, a high-damping RC lattice beam is provided that is capable of maximizing the performance of a precision exposure apparatus by reducing the defect rate and improving productivity.

The present invention provides a system, method, and apparatus for producing a dimensionally stable extruded board product for use in surface coverings. The board product may be a basalt casting powder-based product for use as a substrate for wall or other surface coverings or may be used as a core layer in a modular floor covering unit. The modular floor covering unit comprises multiple layers. The layers are a thin cut stone veneer layer, a core layer with a density similar to that of the thin cut stone veneer layer, and an optional magnetically receptive underlayment layer. Other layers or combinations of layers may also be used.

Disclosed is an aqueous bonding composition comprising: (A) a modified saccharide which is a product of (a) a saccharide and (b) a radical initiator. The composition further preferably comprises a structure based on (c) an amine. The composition further preferably comprises (B) an inorganic acid salt. The formaldehyde-free aqueous bonding composition can contribute to an improvement in mechanical properties such as strength and elastic modulus of a molded article, compared to a formaldehyde-containing phenol resin composition.

A process for manufacturing an inorganic foam includes (i) separately preparing an aqueous foam and a cement slurry, the cement slurry including water W, a cement C, a water-reducing agent, a water-soluble calcium salt, a water-soluble silicate salt, the calcium/silicon molar ratio being 0.7 to 1.7 and the W/C weight ratio being 0.25 to 0.40, and given that the calcium ion concentration is 0.03 to 0.97%, expressed as weight percent relative to the weight of the cement, and that the silicate ion concentration is 0.04 to 1.67%, expressed as weight percent relative to the weight of the cement; (ii) contacting the cement slurry obtained with the aqueous foam to obtain a foamed cement slurry; and (iii) shaping the foamed cement slurry obtained in step (ii) and allowing setting to occur.

A composition for addition to a ceiling tile, flooring product, or other construction product may include microfibrillated cellulose and optionally an inorganic particulate material. The ceiling tile, flooring product, or other construction product may further include perlite, mineral wool, wood pulp, starch and other additives, where the wood pulp and other inorganic particulate materials are bonded to the microfibrillated cellulose. Methods of manufacturing the compound are also disclosed.

Multifunctional composite building materials, which are obtained by mixing nano silicon dioxide, nano titanium dioxide, nano aluminum oxide and nano zinc oxide with nano nickel-cobalt ferrite or nano nickel-zinc ferrite; surface active agent; air entrained agent such as diethanolamine lauryl sulphonate, protein extracts, pulp waste liquid, diatomite; kumgang medical stone; viscosifier such as hydroxyl ethyl cellulose and foam elimination agent such as tributylphosphoric acid ester or butanol in a certain ratio.

The invention discloses a sound-absorbing material particle and a preparation method thereof. The preparation method comprises the following steps: step 1, mixing a sound-absorbing raw material with a templating agent and water to prepare a sound-absorbing slurry, filling a reaction kettle with a porous ceramic substrate and the sound-absorbing slurry that are mixed together; step 2, performing hydrothermal crystallization in the reaction kettle to ensure that the sound-absorbing raw material is crystallized on the porous ceramic substrate and constitutes the sound-absorbing material particle together with the porous ceramic substrate; step 3, performing solid-liquid separation on the materials in the reaction kettle; and step 4, drying and roasting the sound-absorbing material particle.

A lightweight structural concrete formulation comprises a wet mix of about 460 kg/m.sup.3 of cementitious material such as ordinary Portland cement of which about 50 percent has been replaced by ground granulated basic furnace slag (GGBFS) and 7 percent by silica fume (SF) in other words the mix introduces between about 178 and 228 kg/m.sup.3 therefore the combination is good to produce secondary reaction products when the cement hydrates which produces secondary calcium silicate hydrate (CSH) which makes the structure dense and thereby increases its mechanical durability characteristics of the concrete product. Possible ratios of GGBFS and SF are 30-70 percent and 5-10 percent, respectively. By making the structures dense increases the mechanical and durability characteristics of the concrete product. Other ratios have been made including GGBFS of 30-70 percent and silica fume 5-10 percent, respectively. It can be noted that the silica fume was added to the mixture as a supplementary cementitious material (SCM) not as an aggregate. It should also be noted that the particle sizes of GGBFS ranges between about 20-40 mm and that of silica fume is less than 20 mm.

A dry construction composition that is easily wet-sprayed by a screw pump to form an insulating and mechanically resistant material after hardening comprises: at least one binder that includes at least one primary binder comprising lime and/or at least one source of alumina and/or at least one source of calcium sulfate, at least one water retention agent, and preferably at least one surfactant; and at least one plant-based bio-based filler based on sunflower stalk and/or corn stalk and/or rape stalk, having a Bulk Density (BD) in kg/m.sup.3 that is less than 110. The ratio of the binder to the filler is between 2 and 9 in liters/kg. The composition can be mixed with water in a ratio of water/binder that is greater than or equal to 0.8 to form a wet composition. The wet composition can be sprayed onto a horizontal or vertical substrate or molded to a desired shape.

A construction product described herein includes a fiber core that includes a plurality of entangled glass fibers. The fiber core also includes a binder that bonds the plurality of entangled glass fibers together and an Aerogel material that is homogenously or uniformly disposed within the fiber core. In some instances, the fiber core includes between 40 and 80 weight percent of the Aerogel material. The construction product has an R-value of at least 6.5 per inch, a flame spread index of no greater than 5, and a smoke development index of no greater than 20 as measured according to the ASTM E-84 tunnel test.