According to some aspects, a method is provided of casting an object from a mold, the method comprising obtaining a mold comprising a hollow shell of rigid material, the material comprising a thermoset polymer having a plurality of pores formed therein, providing a metal and/or ceramic slurry into an interior of the mold, exposing at least part of the mold to a low pressure environment so that a net flow of gas is produced from the interior of the mold into the low pressure environment. According to some aspects, a method of forming a porous mold is provided. According to some aspects, a photocurable liquid composition is provided, comprising a liquid photopolymer resin, particles of a solid material, in an amount between 30% and 60% by volume of the composition, and a water-soluble liquid.

The invention comprises a concrete form. The concrete form comprises a first mold for concrete and a second mold for concrete, the first and second molds being in thermal communication with each other. The concrete form also comprises thermal insulating material substantially surrounding the first and second molds but not between the first and second molds. A method of using the concrete form is also disclosed.

The invention comprises a concrete form. The concrete form comprises a first mold for concrete and a second mold for concrete, the first and second molds being in thermal communication with each other. The concrete form also comprises thermal insulating material substantially surrounding the first and second molds but not between the first and second molds. A method of using the concrete form is also disclosed.

The invention comprises a concrete form. The form comprises a first concrete forming panel having a first primary surface adapted for forming and contacting plastic concrete and a second primary surface opposite the first primary surface; a layer of insulating material contacting and substantially covering the second primary surface of the first concrete forming panel; and an insulating blanket adjacent the first concrete forming panel. A method of using the concrete form is also disclosed.

Disclosed is a sand aerated concrete panel pre-embedded with a wire box and a wire conduit and its preparation method. The concrete panel includes a sand aerated concrete panel, a steel bar mesh cage, a wire box and a wire conduit. The steel bar mesh cage includes a plurality of longitudinal main steel bars, a plurality of transverse auxiliary steel bars and a plurality of connecting iron pieces; the wire box and the wire conduit are fixed on the steel bar mesh cage; and the steel bar mesh cage, the wire box and the wire conduit are poured in the sand aerated concrete panel. The disclosure solves the problems of complicated procedures, high cost, environmental pollution caused by dust and noise in the prior art, avoids the potential quality hazards of the panels and wall structures caused by on-site slotting, reduces labor force, intensity and cost.

Provided is a ceramic filter for a beverage, the ceramic filter requiring a permeation time ranging from 3 seconds to 15 seconds in a case where 150 ml of hot water having a temperature of 90 C. is introduced, having a total pore volume of 0.230 to 0.270 cm.sup.3/g, and having a median pore diameter of 100 to 160 m. Also provided is a method for manufacturing the ceramic filter.

A disposable core die is provided. The disposable core die includes a first portion defining an inlet configured to receive a slurry therethrough, a second portion integrally formed downstream from the first portion and configured to receive the slurry from the first portion, and a third portion integrally formed downstream from the second portion. The second portion includes a plurality of hollow tubes that are substantially coaxially aligned and have a wall thickness within a range defined between about 0.1 mm and about 0.5 mm, and the third portion defines an outlet configured to discharge excess slurry from the second portion.

A brick of cementitious fiber reinforced building material comprising may comprise a core surrounded by a mixture consisting essentially of about 40 wt % sand, about 5 wt % polymer, about 10 wt % water, about 32 wt % cement, about 8 wt % of a siliceous material, and about 3 wt % glass fiber. In some implementations, the core may be comprised of an expanded polystyrene (EPS) foam. The brick may optionally comprise at least one of a fiber glass mesh, a raceway, and a bonding agent.

A brick of cementitious fiber reinforced building material comprising may comprise a core surrounded by a mixture consisting essentially of about 40 wt % sand, about 5 wt % polymer, about 10 wt % water, about 32 wt % cement, about 8 wt % of a siliceous material, and about 3 wt % glass fiber. In some implementations, the core may be comprised of an expanded polystyrene (EPS) foam. The brick may optionally comprise at least one of a fiber glass mesh, a raceway, and a bonding agent.

The present invention relates to a method for casting building material to form a construction element using a computer-controlled apparatus. The method comprises the steps of: moving the material deposition head and selectively depositing material, to fabricate a formwork; pouring building material in contact with at least a portion of the formwork; at least partially curing the building material, thereby forming the construction element; and removing at least a portion of the formwork from the construction element.