CS261523B1

CS261523B1 - Cement mixture ingredient

Info

Publication number: CS261523B1
Application number: CS866534A
Authority: CS
Inventors: Ladislav Ing Csc Komora; Mikulas Ing Csc Sveda
Original assignee: Komora Ladislav; Sveda Mikulas
Priority date: 1986-09-10
Filing date: 1986-09-10
Publication date: 1989-02-10
Also published as: CS653486A1

Abstract

Predmetom riešenia je přísada do cementových zmesi na báze sacharidov so zlepšenými fyzikálnomechanickými vlastnosťami finálnych výrobkov, připravitelná hydrolýzou di- až polysacharidov v prostředí kyseliny sírovej alebo šťavelovej pri teplotách 70 až 180 °C, pričom vzniknuté monosacharidy sa ďalej alkalicky spracujú hydroxidom sodným alebo vápenatým pri teplotách 60 až 200 °C a pH 9 až 13.The subject of the solution is cement additive carbohydrate-based compositions with improved physical properties final products, prepared by hydrolysis di- to polysaccharides in the acid medium sulfuric or oxalic at temperatures 70-180 ° C, while the monosaccharides formed are further treated with hydroxide sodium or calcium at temperatures 60 to 200 ° C and pH 9 to 13.

Description

261323 3

BACKGROUND OF THE INVENTION The present invention relates to a carbohydrate-based cementitious additive with improved physical mechanical properties of the final product.

Sugar has been reported in the literature as a very effective slower addition of docement mixtures (Sebók T .: Additives and Additives to Mortars and Concretes, SNTL Praha1985, pp. 36-39).

Accordingly, the sugar improves the processability of mortars and concrete mixtures. The improved workability already occurs at 0.06% by weight. for cement, whereby the slowing effect of the slowing effect of the sugar on the solidification is only slowed down.

The effect of the sugar on the strength of the sample depends strongly on the sugar dose used and the type of sugar used. While for SPC 250 cement, a two-day strength test, at 0.05ppm. wt. is a strength of about 3 MPa (with an addition of 5 MPa) with a dose of 0.1% by weight. the strength is less than 0.6 MPa, with a dose of 0.2 and 0.3% by weight. the fortress could not be measured. After 7 days, the smallest dose strength exceeded the strength of the no-addition comparison equation, with 60%, 30%, and 60%, respectively, with dose escalation. non-measurable strength with 0.3 wt. sugar for cement.After 28 days the strength with the lowest addition of about 20% higher than the leveling piece, with a 0.1 ° by weight. was at the level of the reference experiment and at a dose of 0.3% o-O 2 of 2 MPa, ie 10% compared to the 18 MPaporization experiment.

After 90 days of strength in the first three additions, they were higher by 3.7, respectively. 15 ° / os 0.3pere. 2.5 MPa (19 MPa standard). With cement PC 400 Wet after two days strength with 0.05 wt. was 80% of the standard, after 7 days of strength with 0.05 and 0.1pre. wt. they were higher by about 20% from Standard, even after 90 days the strengths were 10-20% higher, while already at a dose of 0.2% by weight. sugar for cement was a strength of only 2MPa, ie, as after 1 day without addition (Standard 27 MPa). A further disadvantage, in addition to the risk of overdosing, is the low strength in the early solidification of the cementitious compositions, the sugar solution having a very low fermentability risk of fermentation. These reasons are decisive because sugar is not added to the concrete.

The above-mentioned disadvantages are eliminated by the addition of cementitious compounds with plasticizing effect obtainable by hydrolysis of di- to poly-saccharides in sulfuric acid or oxalic acid at temperatures of 70 to 180 ° C, while the resulting monosaccharides are further treated with sodium hydroxide and calcium hydroxide. at temperatures of 60 ° C to 200 ° C and pH 9 to 13. The advantages of the process are that the additive does not reduce the plasticizing effect of the aqueous saccharides, but that it substantially increases the strengths in the first few days practically to the desired level, ie as without plasticizer, whereby the strength of the prepared mixture of the mixture after three and seven days is higher than in the comparative experiments. In addition, the process allows for up to 10-fold greater amounts of treated carbohydrates, such as those with flocculants, e.g. sucrose. The process is general and it is possible to modify any carbohydrate-containing composition where these act in greater amounts than the inhibitor.

The procedure is general, so it is not necessary to use the already obtained pure cocoa but the mono-, di- to polysaccharides are very widespread or can be easily synthesized or isolated from waste. In the case of monosaccharides, these occur naturally in the asbestos or six-cell chain of aopentosis or hexose. It is sufficient to heat them in an alkaline environment such as calcium hydroxide to 80 ° C and to oxidize them to the corresponding acids in the course of 5 hours with the aforementioned heat, which give the base with salt so that the base is gradually removed in the solution. and to this end, sufficient amounts of primer are required. If the monosaccharide is not further altered or removed from the mixture, the base is not consumed and thus the procedure and the termination of the decomposition can be determined by simple acid titration. This can also be monitored by the pH of the solution, respectively by determining the aldehyde group, respectively. releasing sugars. The resulting products are adjusted to the desired pH prior to use by the addition of inorganic, respectively. organic acids. In the case of oligo-to-polysaccharide, it is first necessary to break down the hydrolysis with dilute acids into monosaccharides and to react them in an alkaline medium. The process for the hydrolysis of di- to polysaccharides is well known and, for example, xylose (aldopentose) of wood-leachable cells, straw and hydrolysis can be prepared, e.g. sulfuric acid.

After separation of the liquid from the insoluble (non-hydrolysed) portions, the acidic solution of the monosaccharides is converted, for example, by calcium hydroxide, sodium hydroxide, and the like, in which the monosaccharides are converted into a form suitable for use in construction. In the construction industry it is possible to apply advantageous solutions, respectively. the evaporation product, which is not advantageous, however, when it is necessary to add water to the cement in the preparation of cementitious mixtures. Similarly, in the acidic environment, it is possible to hydrolyze starch, cellulose, hexelluloses, sucrose, etc. contained in the skin, but also animal (glycogen), e.g. by heating at normal, respectively. no-elevated temperature (sucrose), resp. autoclave (starch, cellulose). Since the acid is not consumed by hydrolysis of the di- to polysaccharide for hydrolysis, only a minimal amount (trace amount) of acids is sufficient. Even the monosaccharides themselves in the acidic environment have better properties of water and di- to oligosaccharides.

Of course, monosaccharides can also be obtained from the disaccharide by the use of differenteners and enzymes, in which case the release of the monosaccharides is adapted to provide suitable stability properties in the alkaline environment. The advantage of this process is that it is not demanding on the technological equipment and the way of use, since suitable raw materials are widely available and are also produced as by-products in many large-scale products, whether in the sugar mills themselves or in the wood processing industry. -industry and the like. Another advantage is that the process is general and can be used not only with pure carbohydrates, but also with various carbohydrate-containing substances, or as undesirable additives or accompanying substances.

Feeding time (h) PH flood solution 11.6 0 after reaching 8.2 1 11.4 2 11.1 3 10.9

After cooling the solution, this was neutralized by the addition of 32.8 g of 50% formic acid to pH 6.9. Sodium hydroxide was used in the form of 40 wt. aqueous solution. The consumption of sodium hydroxide by the reaction of the monosaccharide was 936 g, ie by reaction, it produced 2.34 moles of acids from 2.22 moles of glucose. To the solution was added 10 g of copolyaductuethylene oxide with propylene oxide having a molecular weight of 1800 and 10% by weight. ethoxamer units in the molecule to reduce aeration.

Analysis of the solution after neutralization was as follows: density 1.187 g. cm-3-saline 36.0 wt.

The content of vicinal hydroxyl groups calculated per mole. weight

In the examples, which do not exhaust all possible combinations, we present specific methods of carbohydrate treatment as well as application tests of results in cementitious mixtures. EXAMPLE 1 400 g of sucrose are dissolved in 600 g of water, 5 g of oxalic acid are added and heated to 100 DEG C. under a reflux condenser. While the solution did not contain cold reducing sugars (according to Scholars), it contained 400 mg per gram of red in the first sample taken immediately to reach the desired temperature. sugars such that further hydrolysis was not required.

The hydrolyzate was adjusted with 40 g of hydroxide to pH 11.6, heated to 90 rC. In the product, the pH, the contents of the canine hydroxyl groups was determined by the iodist method in terms of glucose (Si), and reducing sugars such as glucose (G). The results changed as follows:

Si G Addition (mg / g) (mg / g) NaOH (g) 340 400 40 320 192 72 126 58 - 120 55 - 118 54 - 180 16.6 wt. content of reducing sugars 5.9% by weight. Example 2

To 1000 g of sucrose solution of 40 wt. 0.5 wt. acid (pH 1.54) and heated to 90 ° C under reflux.

While the sucrose in water solution contained 16.1 wt. vicinal — OH skunk (converted to glucose), after heating the desired temperature, the content increased to 24 ° / ohm. and 1 h at 46 ° C. In the course of the next 5 hours, the vicinal —OH content did not change. 60.3 g of 40% calcium hydroxide suspension to pH 11.2 were added to the solution and the mixture was heated to 90 ° C.

The effect of boiling monosaccharide on pH, respectively. the content of vicinal —OH groups was as follows (Si) (1000g batch). 261523

Addition

Ca (OH) 2 (g) rinse time (h)

PH before

pH after addition

Si content (mg.g-1) 0 before heating 11.2 0. after heating 9.44 0.5 9.54 1.0 8.24 1.5 9.54 2.0 9.91 2.5 10.81 3.0 11.2 - 570 24 10.7 405 12 10.9 - 18 10.8 370 24 11.2 - 16 11.4 - 116 11.4 - 7 180 0

21.6 microns were used for neutralization. formic acid to pH 7.1, ie 117 g of calcium hydroxide was added, 1.11 moles (82.2 g) of leachate hydroxide was consumed at 2.22 moles of glucose.

The product contained: 36.8 wt. % dry matter 21.0 wt. vicinal -OH groups calculated on sucrose with a molar. lnnot. 180 density - 1.1788 g. cm-3 content of reducing sugars 4.58 wt. Example 3 Comparative A. 1000 g 40 wt. sucrose solution at 90 ° C and the pH was adjusted to 13.9 g NaOH to 11.94. Within 6 h of cooking, the content of vicinal-OH groups did not change [335 + 15 mg / g determined as mol. 360 sucrose], the pH of the solution also remained at the same level (11.94 + 0.03) and the content of reducing sugars was 0.3% by weight.

After the end of the stress at a given temperature, the pH was adjusted to 6.50 (0.56 aqueous solution) with 13.9 g conc. formic acid. NaOH of 0.04 mole, which may be added to the pH adjustment (from 5.56 to 6.50). B.

Similarly, the possibility of treating the saccharose with 1000 g of a 40% calcium hydroxide solution at 90 ° C for 6 hours was tested.

Addition of calcium hydroxide 7.5 g in 40% suspension. During 6 hours, the content of reducing sugars did not change and was 0 to 0.4% by weight, the content of vicinal-OH groups (360 ± 20 mg / g as sucrose) and HH 11.6 to 11.7.

The aldehyde content as formaldehyde is determined to be 0.3 to 0.4% by weight. 7.8 g of conc. acid formate. Difference in calcium hydroxide 0.10 mol added - 0.085 mol at the end, ie 0.015 mol. For example, 4 A. grams of water, 15 g of sulfuric acid and 1.5 g of copper sulfate were charged into a 1.5 L autoclave with a stirrer and heated to 180 ° C with stirring. After 4 hours, the product in the autoclave was cooled to 80 ° C, filtered through a glass flour, and sodium hydroxide was added to the filtrate containing 25 g of carbohydrates and heated for 5 hours at room temperature. During the rooting at 11.9, 0.14 mole of sodium hydroxide was bound, and the solids content was 5% by weight. After concentrating the solution to a dry content of 40% by weight. application tests were performed. B.

Similar to the autoclave, starch was hydrolyzed but at 160 ° C. After hydrolysis, it was treated with NaOH as in Procedure A and concentrated to 40% dry matter. Example 5 Comparison of the Portladn cement of the PC 400 class - the ladle mixes the slurries of normal density, according to CSN 722 115. According to the same norm, it determines the onset and setting time. 20 mm test specimens were made from the slurry. The test sample molds are placed in a humid chamber (20 ° C, reactive humidity above 90 ° C). After three days they are stored in water at 20 ° C. The samples are tested for compressive strength. As shown in Table 1, with a saccharose leveling composition of 0.1% by weight of sugar, the weight of the cement does not achieve any strength after the first day with a half-dose of 00% of the reference value. 0.3% by weight in 28 days reaches a 50% strength of the reference value The batching water batch has been steadily decreased, ie the plasticizing effect with the dose has increased. 22% by weight of sugar was falsified

According to the procedure described in Example 5, PC 400 test specimens were made and the product of the hydrolysis and treatment of sucrose produced according to Example 2 was tested. The results of applying the product are summarized in Table 2.

As can be seen from these results, the addition of the treated saccharide improves the plasticity of the cement slurry, accelerates the solidification and even at smaller doses of 0.05 and 0.1% by weight. the cement addition increases the day-to-day strength. EXAMPLE 7 10 Test Procedure 5. Test results are shown in Table 3. While the results of Examples 6 and 7 are similar in plasticity to the same, daytime strength and addition of 0.3% by weight. for cement are 90% compared to results without addition. After 7 days of hardening and further, the strengths are 10p. higher than in the reference experiment.

The product prepared according to Procedure 1 was 261523

Influence of additions of untreated sucrose solutions (p = 1170 kg. M-3, dry = 41.8) on the properties of cement slurries (cement: PC 400) and strength of test specimens o

Honor 1 0)

O

CO o

G co 00

CM cd> -4- »

CO o

G> ω

Pu

G

'G t-i> cd Ό

O

Q

CO cd

c bΌ <honor <W c F-1 o what cq CO 00 * cm "©" b 03 O obt — 1 rf 00

Tfi

CO CM * ca CM CO IO C0 '®O_

cn irf cm co t>"rTr> oo m m cn oo in OT CO rH co bs

What"

cm 'Φ in in

What "©" © Ό cm "rf I

Xt <CM OON OO O © 03 CM © CM rH fCM 'Φ O b OO © © CM 00 b

00 to Η H

rH CM CM cq co H CO. b ^ COo what "what" © "what" about "©" About CD © © © 00

WHAT?

G Co & 0 4t 00 b &

N

About CL, 00

CM

Cd G

G 4 GG £> -o

- + £ 8 £

> S

® oCM X rf

Cs. what rH e j ~ what moo "what c f jt mina □ ooo what rl rl riri CM ^ CM ^ three 00 00 cq 03 * CO * in" bs "'" oo "b> 00 00 00 h oo cq © ^ co cq. cn cn coCD what r-Γ rf CO * © *

CO bbb COH CO

CO ^ b ^ rHO ^ CO ^ rdCM o "* Φ * b * o" © "i co" CDinind HI CM

CM ca 4 th Pl

G X3

G

H 11 š o 21 -§ & «α

Ft '£ OS>wft'3 thi · * «wΌ' + -> o ω Ό“--4 carGocaV)

> 03

O 04 .2 + ->

G

rG

G .a cd ωoTti

03 © G b Ό

O> X © 4th>'Honors'

'G

OO O O Φ O rH LC3 00 rH b * H rH CM CM CM CM CM CM CM

OOO OOO OOO O O H H q q q q q q q """""" q q q q q q q q q q q q q q q q * "O © CM CM CM CM CM CM CM cm cm cm cm cm cm cm cm cm cm cm c c c c c c c c c c c c co co co co co co th cm what in bo "o" o "o * ©" o "

O

O * Φ

03

O

C q to CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD r r r r r r r r r r r r r

G 03>S'3 with * Ss H QQCb ΙΙ «-η 53o. here i> 8 honors 4>> honors

Q cd 4 th>

'G

Q cd 4 th honor

Q

b Ό · - <G Tjw 0

rH-- '' s

Ϊ-Ι '-' G.

Jfi 261523

Effect of Additions of Treated Sucrose Solution According to Example 1; (p = 1187 kg.m * 3 dry = 36.0%}, on cement cement properties (cement: PC 400 Ladce) and test specimen strength Dose Dose Dose Total water dose No. Time Compressive strength v (MPa) Remarks 00

CM

øx ío ts in co oco ”cm” what ”irf cd” and o 03 o OOOO *

rH rH rK rH rH

You tell you 03

WHAT

> W ti

Of the three thirty you

About .2 you

Xh ti ti from β β β

CO

• ι — I sa · ι * 4 s

W2 S

ti ** oZ C · a

CM 03 © 03 CO 05 IS cn in i <<what ”o” is what co oo 03 CO (o TP CM <© 03 03 rH cm ”co” m ”in O” *

CD t> CD

CM ID CO CO rHco ”tjT n.” 10 ”id” o ”co” M Μ MM CO rH M

OOOPOO CD 00 rH If) CM CO CM CO CM CM CM CM

QOOLOMnMlDCO 00 CM CM CM CM O CMO o rd a co on in co co CD cm ™ CD r ™ l CD co 00 00 co ”00 rH CD Ό O> CD CO CM eo O ti ti T3 co” cd ”O” t> t — 1 mT cm ”CD CD σ> CO CO x and CM rH rH rH rH rH rH oa OOOOOOOO 'ti co” oíiti id ”co” what ”μ” in «

OCDOOOOCl COCOOOMrHrHHHHrHrH

rH 'ti 0-4 * ti M M <CM CO rH <Ό03 © CD CO rý L · £ o ”th” m ”cd” th 00 and ti

TD ti ID * ø-f CD M CM ^ CO ^ in cm ^ a CD About CD3 CZ ^ 3 ^ 3 60 β tri

O

CM

O AS0 O o <8 4-> and CJtu '>> + - 1 β

• fH »Q £ oa> z 'ti ω z ti ti Ό

Z and ti> φ and Asht s- <"a0o" XJ oO fl, a

>, -wn ΌΌ

55 S 3 3 S β g

O uti kl (ON fi s ». &Amp; β and β * o

° coN ASO H βr>'> * o> β o

> tica βτϊ ω'CS ag>>

Z and o> ti Λ s' ti ti

N

O

CU co

$ $ Cí $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ > Q tiO ti · a rti ti 1

> With X5 o -—.><?

£ 2 B Φ

O

in M ^ O0 CO CM ^ co ”cm” what ”M” id ”cd” CD O CD OOO CM ^ CO CD ^ co co> cd ”co” co ”cd” cd'tx 00 00 00 00 00 t * s ^ CD ^ vH c © C ^ IO 'Hcd' rf cm 'CM rT τ ~ Γ Oco c ^. what about what? Q0 CD. CDco ”lo í>” co

ID cm ”

CM CD ^

CD

WHAT

o CM CM CO LO v CD O rH rH CM CO co CM CO CM rH rH

OOOCMeOOOO00 00 CD rH CO CO

H t ** H r * H cmi in ^ o * eo

o "hT o" cd "lo co" o "OCDCDCDOOOOCOCD

-D LO r ~ l CM CO LQ CO CMr co ”o” cd ”CD cm” CD o CD CO 00 00 CM CM rH rH rH rH rH rH

CD O_ CD CD <D oo COcd ”cd” co ”Τ-Γ r-ΓOOCDCOOOt ^ OOOCMCMrHrHt — 1t — It — ItH

O. 00 CD CM CD CO CMao ca t ^ N'inC0 rf oo ”in 00 ~ rH 00 ~ m * OCSrHCMCOint ^ CMo * o“ o ”o“ o "o" what additive added 1.5 min. after addition of water 261523

Effect of the addition of the treated sucrose solution (p = 1209 kg. M-3, dry = 33.5%) according to Example 1 using sodium hypochlorite as the alkaline agent on the cement slurry properties prepared from PC 400 cement and the strength of the test batch batch Dose Total Dose of Water Am. Time Compressive strength v (MPa) Remarks additive water additive (ml) (%) solidification setting Cure time - (days) (%) (ml) (ml) (min.) (Min.) 1 3 7 28

tx CM CM ^ 03 CO ^ 00 o "rf CO * TjT txO)

CM

o "o" r-Γ írT o ctT t>. 00 00 00 00 00 O) CM ^ © CO ΙΠ rHo "o" o 'Φ co what "what tx tx tx what CM CM in CM CD00 SfT O CM IC"

Tfl xtft 00 CM rH 00 θ '00 Three oo co' what

OOOOCMOLOOQOOOOOOCMCOLOCOCM CM CM CM CO

OOIOVOtHIOOO

OC M OC OC OC TT CO CM OC OC OC OC OC OC OC OC OC OC OC OC OC OC 30 30 30 30 30 30 30

Q what "o" m "oo" what "tx" tx "oo" oca oo what tx t \ t

Co CO rf rf mi co CO CO CO CO CO CO CO oo oo oo oo oo 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 "ΙΟ O)" o "oOrHCMCOlDtxCMo" o "o" o "o" O * o ">>oo>

'C aoa 3

• fM and IT ^

rH 'ti ti cti' ti ft

Ti ω 0 0) ω ω ω ω ω ω ω ω ω ω ω ω ω

W o ti 4-> co

Honor the Fourth and 'Honor You 00

CM tí S-3 3 «8th ti> P-4U_l oo> 7) ti 0)

AND

tx o) Th Th Th Th Th Th Th 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 CO CO CO CO CO CO CO 40> Oo oa co co> co ooo ΙΠ Tft in "o" co "TJ1" Φ eo co CM "

About "Honor Four

fQ honor 00

rW

O tx ω s to>o><0 and 3><φN eg

Ti SS a SS a a a a a a a a O O O O O O O O O ((((((((((((

Cti'ti

ArMí- <Λ—, Λΐη

CM> eo ”3 O &a> w

O

rH

WHAT

NO NOOOO

ω ο η J J J J J J J J J J J J J J J J J J J J

rH

CD co "

O

CM

OO

CO H t S t in in cm · 0) O) 05 03 05 in o

CM

CD CO CD 00 ^ t>"co" o "co" O) 05 05 OO CO _ '3 gq> S Ό -> · * · cti

Q So - Q £ a

CO o

CM

About "

CM 00

"Cm" oo "cm" 05 05 00 00

rH OOO) H CO <rf CO M * "00" 11.45 177.0 183.7 89.2 110 210

r ^ CM CO ΙΟO OOOO 261523

Effect of Additions of the Treated Sucrose Solution According to Example 2; (p = 1178, dry = 38.8%), on the properties of cement slurries (cement: SPC 325j and strength of test tellers Dose Dose Dose Total Dose of Water No. Time Compressive Strength - (MPa) Remarks Additive Water Additive (ml) (%) solidification solidification Cure time - (days) £

CD s

CD

CJ> »

You are with * ca and

N oa 00

CM o co in what about cdt <θ 'CM "cd"t> 00 CD O) 00 00 co

LO WHAT CO rH COO? rf rf Cjd 'd 00ΙΌ CO O CO ID rH co (CO ď co "3" co "cd cm"' udρ ud co cm CO 00 CD O Ocm "TtT cd o" cd oo 3 o ud o 3r- f CO 3 3 CO τ-f rf

3 m to 3 3 udCM rH WHAT WHAT COCM CO WHAT WHAT ID

cd to cm "cm" r-fO CD CD CJ5 CD CD

CD CCJ ^ CM FROM UD 00 what "what" rH cd from O CD 3 CD CD CO CM rH rH rH r- (rH

o 3 ^ cd o, o3 "cd co" 3 "rd co" o CD CD CO 00 ooCM H rl Η OH CM LCD CD Ψ COCD 00 ^ CO 3 CMcd rd what "ud cd" ud OOH CM CO 3cd o "o" cd o "cd wo ti + -» CZ5 ca ca 3 3 r2 3

—Γ — I and 3 3 ί3 oa co co 3

CD 00

CM 0- <d s-§ 3, 2x · £ 3 3 £ £. 73> Sm - + j to cn O 33 33

CD 00 CD ^ CDt>"<dCM" CO "rf CD" CD 00 CD CD 00 LO in LO 1 <T CO rd rH td cm "what" cd

3 CO CM CM CMM CM "rf CD td 3""Φ 3 CO 3 CM

to 3 ir ^ rH oo ^ cm "lim" cd "rf Oτ — I r — I t — I ca

X & ca

ÓD b-oCO wt-1 qjr-f ai

CD press o. Y0!

>> - 2N ĎΌ><ΛO 3 · —4,

3 "3 ° 2o 2Q -C 3 3 i í + * - J J O ía CD CD CD CD CD CD OO OO OO OO OO OO OO OO OO OO

CD cú

CD CĎ S £ S ω £ £ &

£ << N "CO 3 O," and cn> s. O

CO ca Μ * ί> Ί

?> TO 3'3 OS a> - >> CD 3 CD CD WHAT CO CO "what" cm "r-í cdO 3 3 CD 3 what

Q CO CM 3 CD 03 CM "CD" CD "CD 3 CD 03" CM r * 4 rf t - (rf rf C_ CD CD CD <3 "what" cd "rd" what 3 CDs) CO CO Cx CM rH rH rH rH Λ! Ω> - * rrt ~ 13>05'3 caa * * &<->> 2 § ra-p>3> Í5 ^ qa '' Φ CM 3 ° to " rf co "cd" in o c r CM co ino "cd o" o "cd" 261523

Effect of Additions of Treated Sucrose Solution (p = 1201 kg. M 3, dry = 37.9%), according to Example 1 (but at 70 ° C), on the properties of the slurry (cement SPC 325) and strength of test specimens Batch Dose Dose Total Water Dose Number Time Compressive Strength - (MPa) Remarks Additives Water Additive (ml) (%) Solidification Solidification Cure Time (days)

Cx co .aa ci i la CM 00 00. CO CO 'CO * m * CM * C?

00 About CD ι in ι ϊ ϊ in in in in in in in o o .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 O O O O O x x x M ^

CM CO CO CM OO OCM Mi * CO r-4 * OO * -é

W (JiJO au £ '£ λ and «ga $' +3 ja« 3 Ί-Ο ífl and 2 cω> - 05 .p á '3in m II £. Ω>; nas (Λ 4- 3 2i aa o5 . u

(50 N 44 "and> 3 and 8 CL. Oo.)

CM 'r' 1 3 honors -iCO-3C «CZ3 2« λ what about CMco what about

UO co

o tno coCO rH

OT — l

Honor 44 43O'5x (3ω> CTI. Λ · ι-1)

O

CM

They honor

Honors j5 2 aa | |

OO co OO OO OO OO OO OO OO OO OO OO OO OO OO OO OO * * * * * * * * * * * * * "o" o "o" o * o *

κ o, tn co cot tT * * * CM CM CD CD CD CD CD CD CD CD CO CO CO CO CO CO CO

O

O σ> tn tn what co cotn CD CO * CO CO * biMÍ What is it What is it about qc qCM * to * O * M * OO * O * rH rl CM rl

About oooid tnr-f CO CM rHCO CO Mi M rH rH / W OCO -w

N 3 £ 3f- tn <0 oΛ 3o + -1o scn J2 honors a

They honor

> H * and o ~>

honors the honor of honor

44 f

iiV 05

O

o in oin o oCM Mi CO t> O COCM CM CM

M ^ co iq. t> tmO * Cx * to * CM * r-Γ O * CD CD CD CD CD CO. 03CO * O * CO * CÍ OO * to * OO CD OO COCM N CD Η H r (Φí3ωí> ctíp- <* 33; ΰ S ° S Λ O '05F-.

OO 0.0.0 O

S * o * to * oo * to * o * OO 00 00 CxCMCM rlHl H 8?

Claims

Example 8 Results of the product annealing of Example 1, but at 70 ° C decomposition in alkaline medium for 4 h, are summarized in Table 4 according to the method described in Procedure 5. Example 9 Sucrose hydrolysis was converted according to the example. 1, further decomposition of glucose with sodium hypochlorite at 80 ° C in the course of 4 h. Results with the application of this product are summarized in Table 5. In this case too, the product properties were improved at Example 8. Examples 10-14 Test results the procedure of procedure 5, but with the troscortland cements of SPC 325 class Rohoznik, summarizes the tables 6 to 10. Here, table 6 is a pure sucrose solution, in Table 7 the results are with the addition of prepared sucrose according to the example 2, the sucrose treated in Example 8, in Table 9, the sucrose treated in Example 1, but at 70 ° C and in Table 10 of Example 1, but used Sodium boronate as alkaline reagent. By comparing the results with Portland cement and troscortland cementemvidno, the SPC cement is more sensitive to the present sugar and already 0.05% by weight. cement prevents the cement from solidifying during 24 hours. The treatment of sucrose with mono-sucrose and its subsequent reaction in alkali in all cases, i.e. at both lower and higher reaction temperatures with calcium, sodium and hypochlorite, while maintaining good plasticizing effect, shorten the setting time and increase! and the day-to-day strength in dependence of the allowance compartment. In particular, the seven-day strength is enormously high up to 20% higher than the reference result without addition. Example 15 The alkaline sucrose loading products of Example 3A and 3B were tested, as described in Example 5. Cats were made with 0.1% of 3A and 3B and 0.5% of 3A and 3B with PC-400. were performed for 48 hour samples. The results were as follows: strength addition after 48 h 3A 0.1 wt. 42.3 MPa 0.5 wt.

2.3 MPa 3B 0.1% wt. 34.8 MPa 0.5 wt. 2.0 MPa In comparison with the results summarized in Table 1 (sucrose shows that the alkaline product itself is level with unadjusted sucrose. Only the first step, ie the acid hydrolysis of sucrose at glucose of Example 1 without addition of (% w / w) sucrose treated in an acidic dilution of the subsequent treatment in an alkaline medium The strengths of the test specimens prepared by the procedure of Example 5 with cement PC-400 were as follows : 0,05 0,10 0,20 0,3 0,5 Strength after 24 h 43,2 40,2 (MPa) Strength results are better than with sachtarose (Table 1), but noticeably worse as in the subsequent treatment in alkaline medium (Tables 2 to 5) 31.1 26.5 6.5 2.3 After testing the product of Example 4, if the strength results at table 4 level were as high as 180 ° C, the resulting monosaccharides are further alkali treated with hydro sodium or calcium oxide at a temperature of 60 to 200 ° C and a pH of 9 to 13. ARTICLE Additive for cementitious mixtures with plasticizing effect prepared by hydrolysis of di- to polysaccharides in sulfuric or oxalic acid at temperatures of 70 ° C.