Glass brick is a kind of light-transmitting hollow or solid brick material. It is used as a wall with good decorative effect and light-transmitting and sound-insulating functions. It also integrates the main body and decoration, which can reduce the construction process and shorten the construction period. This process standard is applicable to the external or internal wall of glass bricks with high requirements for general building decoration.

1 Material preparation

(1) Glass brick

Generally, it is hollow brick or solid brick with convex and concave inner wall. The common specifications are 190mm×190mm×80mm, 240mm×240mm×80mm, 145mm×145mm×80mm, etc., requiring regular corners.

(2) Cement

Use ordinary portland cement of grade 32.5 or 42.5.

(3) Sand

Use white gravel, particle size 0.1 ~ 1.0mm, free of dirt and other color impurities.

(4) Admixture

White ash paste, gypsum powder, adhesive.

(5) Other materials

ф6mm steel bar, glass wool felt or polystyrene, channel steel, etc.

2 Construction equipment

(1) Machinery equipment

Mortar mixer, lifting frame, winch, etc.

(2) Main tools

Big shovel, support board, wire sinker, white line, 2m steel tape measure, iron level, leather number bar, small bucket, ash trough, broom, transparent plastic tape, rubber hammer, push wheel car, etc.

(3) Operating conditions

The protective layer of the base waterproof layer has been completed and pre-accepted.

The base layer is leveled with plain concrete or dunnage, and the elevation is found.

Bounce the bottom brick line under the wall, and set up the number of bars according to the elevation. The distance between the number of bars is 15-20m.

According to the size requirements of the wall in the design drawing, the wall body line, the position line of the door and window openings and other size lines are played around the glass brick wall, and the pre-inspection procedures are completed.

Install and fix the channel steel or wooden frame on the top and both sides of the wall.

3 Process flow

(1) The building method generally adopts cross-stitch brick building.

(2) Glass bricks should be selected in advance with neat edges and corners, basically the same specifications, the brick diagonals are basically the same, and the surface is free of cracks.

(3) According to the position line of the glass brick that is springed, check that the length of the glass brick wall is not in line with the modulus of the row of bricks. The width adjusted on both sides should be consistent, and at the same time the width adjusted after the channel steel on the upper part of the brick wall should be kept as consistent as possible.

(4) The masonry should be hung on both sides. If the glass brick wall is long, several fulcrums should be set in the middle to find the elevation of the line so that the overall height is consistent. Each layer of glass bricks needs to be hung with a flat line, and threaded to see the level, so that the horizontal gray seam is straight and smooth, uniform.

(5) The brickwork shall be layered with long layers. The bottom layer of the first layer of bricks should be built according to the following line. When building the first brick on both sides of the brick wall, glass wool felt (or polystyrene) is embedded in the frame on both sides. The glass wool felt (or polystyrene) is embedded on the top with the increase of the glass brick wall, and the joints are butted. After building a layer of glass bricks, use transparent plastic tape to subsidize the vertical joints of the glass brick walls, and then pour mortar into the standing joints.

(6) ф6mm double-row reinforced mesh should be placed between the layers of the glass brick wall, and the docking position can be set in the center of the glass brick. The uppermost layer of glass bricks is built in the middle of the wall and ends. Glass fiber felt (or polystyrene) is also placed in the top channel steel.

(7) During the masonry, the horizontal gray joints and vertical width are generally controlled to 8 ~ 10mm. The mortar will be drawn with the mortar after the grouting is finished, the depth of the grooving is 8 ~ 10mm, the depth is required to be consistent, the cleaning is clean, and the seam can be hooked after the scoring has been done for 2-3 hours. The joint mortar is mixed with gypsum powder with 2% cement weight. To accelerate the condensation.

4 Quality standards

(1) Main control project

The model and specifications of glass bricks must meet the design requirements.

The variety and strength of the mortar must meet the design requirements; the mortar should ensure good workability and strong bonding strength.

(2) General items

The masonry mortar must be full and dense, and the fullness of the horizontal and vertical gray joints should be 100%.

The masonry method is correct, the arrangement is even, the wall is horizontal and vertical, the surface is flat, clean and tidy, and the width of the horizontal gray seam and the vertical gray seam are basically the same.

The skeleton of the installed glass brick should be firmly connected to the structure.

(3) Allowable deviation items

See Table 200-1 for the allowable deviation and inspection method of the size and location of the glass brick wall masonry.

5 Product protection

(1) Keep the surface of the glass brick wall clean, and clean it with the masonry.

(2) The glass brick wall is completed. Before proceeding to the next process, a wooden wire mesh should be erected at a distance of 100 to 200 mm from both sides to stop the damaged glass brick wall.

6 Safety and environment

(1) Glass bricks should not be stacked too high to prevent breaking and hurting people.

(2) When laying walls on a scaffold, the ash capacity of the ash barrels shall not exceed two thirds of its volume.

(3) Operators should wear hard hats and canvas gloves.

7 Notes

(1) The masonry mortar should be used with mixing and mixing according to the amount of masonry, and should not exceed 3h.

(2) The number of poles should be kept at the same level, and the small line should be tightened when hanging each layer to avoid unevenness in the size of the gray seam caused by inconsistent tension.

(3) The horizontal joint mortar should be spread a little thicker; the vertical joint mortar should be carefully tamped and the joint should be tight to ensure that the mortar is full and dense.

(4) In order to ensure that the wall is vertical, it should be checked at any time by using the pendant method. If any deviation occurs, it should be corrected immediately.

8 Quality record

(1) Factory quality certificate and test report of materials (cement, glass brick, sand, lime paste, admixture, etc.).

(2) Notice of mortar mix ratio.

(3) Report of mortar test block.

(4) Hidden inspection records.

(5) Design changes and negotiation records.

(6) Quality inspection and assessment of sub-projects.

(7) Other technical information.