SU1671635A1 - Mortar - Google Patents

Abstract

The invention relates to building materials, in particular to compositions of building mortars with increased conservancy, used for laying structures made of bricks, concrete stones and stones from light rocks. The purpose of the invention is to increase the time to maintain the mobility of the mortar. Mortar includes, wt.%: Portland cement 14.00 - 18.00, sand 64.00 - 69.00

neutralized secondary mother liquor pentaerythritol production based on formic acid sodium salt and carbohydrates 0.49 - 0.63

Mylonap 0.04 - 0.09

water the rest. The retention of the solution is up to 20 hours without loss of strength. 4 tab.

Description

(21) 4686902/33

(22) 03/23/89

(46) 08.23.91. Bksh. No. 31

(71) Design and Research Institute Rostov Promstroy-niyproekt

(72) S.Kh.Uvarova, O.L. Yakovleva and S.S.Dy chenko

(53) 666.972.16 (088.8)

(56) Instructions for the preparation and use of mortars - M .: stroiizdat, 1975, p. 6, 27.

USSR Author's Certificate No. 1300002, cl. From 04 To 24/04, 1984,

(54) BUILDING SOLUTION

(57) The invention relates to building materials, in particular, to building mortar compositions with a high storage capacity, used for masonry structures made of bricks, concrete stones and stones of light rock. The purpose of the invention is to increase the time to maintain the mobility of the construction worker. Building

the solution includes May

h

Portland cement 14.00-18.00; sand 64.00-69.00; neutralized secondary stock solution of pentaerythritol production based on formic acid sodium salt and carbohydrates 0.49-0.63; mylonap 0.04-0.09; water - the rest. The retention of the solution is up to 20 hours without loss of strength. 4 tab.

V)

WITH

The invention relates to building materials, in particular to compositions of building mortars with increased conservancy, used for laying structures made of bricks, concrete stones and stones from light rocks.

The purpose of the invention is to increase the time to maintain mortar mobility.

Portland cement MZOO and natural quartz sand with M 1 are used for preparing mortars.

Neutralized secondary stock solution of pentaerythritol production based on formic acid sodium salt and carbohydrates (SPS) is used as chemical additives.

the following composition, wt.%: sodium formate 20-22; pentaerythritol 9-10; sugar to 10; mineral salts up to 3; water is the rest. The dry matter content in addition to 50%, Mylonaft based on sodium salts of petroleum acids has the following composition, wt.%: mass fraction of petroleum acids not less than 43i mass fraction of mineral oil in terms of organic substances not more than 9, mass fraction mineral salts not more than 2; including mass fraction of sulfates not more than 1; mass fraction of chlorides is not more than 1. Acid number (mg KOH per 1 g of petroleum acids) is not less than 220.

The sand and chemical additives with the mixing water are loaded into the mortar mixer and stirred for Ci.

one

oh

00 SP

1.5-2.0 minutes, after which Portland cement is added and mixing is continued for 2–3 minutes. The prepared mortar mixture is discharged from the mixer into the tank, and then after certain periods of time (0.4 2; 4; 8; 16 and 20 h) samples of the solution are taken and the mobility is determined by the depth of immersion of the reference cone into it.

The compositions of the prepared mortars and the results of tests of their properties are given in table. 1-4.

As can be seen from the above results, the use of the mortar of the proposed composition makes it possible to increase the time to maintain the mobility of the mortar mixture up to 20 hours without losing the strength of the solidified solution.

17.96 64.87 17, 00 65.88 0.60

17.99 64.96 0.63

18.00 65.11 0.63

famous 5

18.00 64.00 0.63

17.98 64.93 0.11

(0.6% by weight of cement)

18.12 65.44 0.18

(1.0% by weight of cement)

Claims (1)

Invention Formula Mortar, including Portland cement, sand, neutralized secondary mother liquor of pentaerythritol production based on formic acid sodium salt and carbohydrates and water, is different from the fact that, in order to increase the time to maintain the mobility of the mortar, it also contains myloneft in the following ratio of components, wt.%: pore tandoment 14-18 sand 64-69, neutralized secondary stock solution of pentaerythritol production based on formic acid sodium salt and carbohydrates 0.49-0, 63; mylonaph 0,04-0,09 water the rest. 17,17 16.47 from cement and 16.34, from cement 16.17 from cement 17.28 16.98 16.26 Table Physico-mechanical characteristics of building solutions M 100 control add-on) 0.4 2 about invention 1 famous 5 0.4 sixteen 20 0.4 sixteen 20 0.4 sixteen 20 0.4. sixteen 20 0.4 2 four 0.4 eight 12 10.5 eight 6 10-11 9-10 eight 10-11 9-10 8-9 10-11 10.5 9 10-11 10.5 9.0 10.5 eight 6 10-11 five 3-4 table 2 5.6 5.0 4.5 5,6 5,6 5,5 5,6 5,4 5,4 5,6 5,6 5,5 5,5 5, 4 5,3 5.9 5.2 4.5 5.9 4.3 10.0 8.1 7.3 10.2 10.0 10.0 10.2 10.1 10.2. 10.1 10.0 10.2 10.1 10.1 10.5 9.2 7.2 10.7 7.0 12.4 10.2 9.8 12.7 12.8 12.7 13.0 12.7 12.4 12.9 12.8 12.6 12.7 12.7 12.6 12.8 10.4 9.6 12.8 9.1 2.7 2.9 2.7 2.6 2.6 3.0 3.3 35 33 34 33 33 36 38 The solution lost workability Control (table 4