Title of Invention : DRY TILE MORTAR |

[0001] (This document presents Description, Claims and abstract to patent application specifically for a new formula and mixture of cementitious Dry Tile Mortar.

Technical Field

[0002] The present revelation appertains to the composition modification of common and current cementitious dry admixture to invent cementitious Dry Tile Mortar.

[0003] The disclosed composition modification includes the improvement of ratio admixture of ingredients, and specifically in cellulose ether, aggregate and Portland cement.

Background Art

[0004] Tiles/ Ceramics/ Granites and Marble plates have been used for ages, as a preferable finishing material in construction and building. It has hygienic properties and easy to clean, as well as being easy to install, low cost to maintain and peace of mind to manage.

[0005] To adhere the tiles to other subsurface like walls or floors, there are cement mortar-based adhesives, resin-based adhesives, and emulsion-based adhesives base on its main binding material. Among these adheres, cementitious is being used widely, as they are economic efficient and easy to install.

[0006] High adhesive strength, good sag resistance and long open time, are the main characteristics of an acceptable cementitious dry mixture.

Summary of Invention

[0007] Dry Tile Mortar is improvement and modification of cementitious dry admixture in order to provide lower manufacturing cost and maintaining the good qualities of dry mortar. Technical Problem

[0008] The common and current cementitious dry mixtures are dramatically costly and increase the construction cost that affect the builders as well as end customers and premises users.

Solution to Problem

[0009] The present invention is improved mixture ratio of cementitious Dry Tile

Mortar including the cellulose ether as binder, aggregate as filler and Portland cement as paste coat.

[0010] The cellulose ether may contain at least one of the selected forms of,

hydroxyalkyl cellulose, alkyl cellulose and hydroxyalkyl alkyl cellulose, in the group.

[001 1] As well as containing at least one of the selected forms of hydroxypropyl methyl cellulose, methyl cellulose, ethyl hydroxyethyl cellulose, hydroxyethyl cellulose, and hydroxyethyl methyl cellulose, in the group.

[0012] Viscosity of the cellulose ether solution with 2% (w/v) concentration, using Brookfield viscometer, can be within 10 to 200,000 cps range, at 20 rpm and 20° C.

[0013] According to simple ingredient of the present invention, cementitious Dry Tile Mortar composition includes sand, cement and the cellulose ethers.

[0014] The mixture ratio of the cementitious Dry Tile Mortar composition is as

followings:

[0015] Ingredient Percentage by weight

a. Portland Cement IV 32 - 33%

b. Filler Sand 1 -1 5mm 67/8 - 66/6%

c. Cellulose Ethers 0.2 - 0.4%

Advantageous Effects of Invention

[0016] By admixing the Sand, cement and cellulose ether composition according to the present invention, developed product is cementitious Dry Tile Mortar that after mixing with water, before installation, provides acceptable tensile adhesion strength tor tile installation with affordable manufacturing cost and subsequently cheaper end price.

Description of Embodiments

[0017] Dry Tile Mortar can be compatible with other existing similar cementitious dry admixture in quality and low cost in production

Testing & Reports

[0018] According ISO 13007 - 2, 10 specimens were prepared with described

mixture ratio in the section“Technical Solution”.

[0019] The following procedures were carried out for preparation of specimens: a. Pour the liquid into the pan;

b. Scatter the dry powder over the liquid;

c. Mix for 30 s;

d. Take out the mixing paddle;

e. Scrape down the paddle and pan within 1 min;

f. Replace the paddle and mix for 105 s.

Testing & Reports

[0020] The following procedures were carried out during specimen test.

[0021] Apply a thin layer of the adhesive, mixed in accordance with 3.4.1 , to the concrete slab with a straight edge trowel. Then apply a thicker layer and comb with a notched trowel having 6 mm · 6 mm notches at 12 mm centers. The trowel shall be held at an angle of approximately 60° to the substrate at a right angle to one edge of the slab and drawn across the slab parallel to that edge (in a straight line).

[0022] After 5 min, 10 min, 20 min, 30 min or more, place at least 10 test tiles 50 mm apart, on the adhesive within 30 s: place tiles on no more than 4 ribs for all adhesives. Load each tile with (20 ± 0,05) N for 30 s. [0023] After 27 days of storage under standard conditions, bond the pull-head plates to the tiles with a suitable high strength adhesive (e.g. epoxy adhesive).

[0024] After a further 24 h storage under standard conditions, determine the tensile adhesion strength of the adhesive by applying a force increasing at a constant rate of (250 ± 50) N/s

Test Results

[0025] Specimens Newton N/mm2

a. 1 2264 0.8784

b. 2 2175 0.9249

c. 3 1356 0.5773

d. 4 1547 0.6692

e. 5 1690 0.6569

f. 6 1828 0.7661

g. 7 2068 0.8352

h. 8 2433 1.0264

i. 9 2104 0.9309

j. 10 1983 0.8373

k. AVERAGE 0.81