The Solubility of Calcium Hydroxide in Aqueous Salt Solutions

Johnston, John; Grove, Clinton

doi:10.1021/ja01362a009

Cited by 58 publications

(32 citation statements)

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“…It has been shown that the presence of NaCl increases the solubility of dilute Ca(OH)2 solutions (Johnston and Grove 1931), thereby permitting a faster rate of leaching out of the concrete matrix. This mechanism has been proposed also for solutions with higher concentrations of Ca(OH)2 (Hewlett 1988).…”

Section: Discussionmentioning

confidence: 99%

Field experience and the long-term durability of reinforced concrete structures

Melchers¹

2015

Proceedings of the Second International Conference on Performance-Based and Life-Cycle Structural Engineering (PLSE 2015)

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For reinforced concrete structures the conventional wisdom is that after some years of exposure to marine conditions reinforcement corrosion is inevitable. Much attention is paid in the literature to the rate of ingress of chlorides through the concrete cover to the reinforcing bars and to ensuring highly impermeable cover and/or deeper cover, to try top prevent chloride-induced or carbonation-induced corrosion initiation. Actual field experience shows that there are many reinforced concrete structures that have survived remarkably well for many decades despite having very high chloride concentrations next to the reinforcing bars. Even with very modest concrete cover by modern standards, exhumation often finds bars free from corrosion. Detailed investigations of a number of such cases showed no corrosion if the concrete pH levels are above about 9. On the other hand, very severe reinforcement corrosion was observed in the few cases where the concrete had cracked right through the cover to the bars. Often there was no external evidence or signs of interior corrosion, including longitudinal cracking. The implications of these findings for practice are discussed.

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Section: Discussionmentioning

confidence: 99%

Field experience and the long-term durability of reinforced concrete structures

Melchers¹

2015

Proceedings of the Second International Conference on Performance-Based and Life-Cycle Structural Engineering (PLSE 2015)

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“…Nevertheless, a separation of solid phase does not usually occur at 50° or even at 60° C when a solu tion saturated at 25° is filtered and subsequently heated to those temperatures [13,14]. A solution of calcium hydroxide that has been saturated at or near 25° C can accordingly be employed as a pH standard over a considerable range of temperature.…”

Section: Calcium Hydroxide As a Ph Standardmentioning

confidence: 99%

“…For the solubility of large crystals at 25° C, however, Johnston and Grove [13] found a value of 0 .01976 m, and quite recently Peppler and Wells [19] have concluded that the solubility of large, we11-formed crystals is 0.0184 m at 30°. Inasmuch as the solubility of calcium hydroxide appears to be only about 4 percent lower at 30° than at 25°, there remains a discrepancy of about 2.5 percent between these two determinations of the solubility of large crystals.…”

Section: 1 Solubility Of Calcium Hydroxidementioning

confidence: 99%

“…Freshly prepared borax and caleium hy droxide solutions should b e used for this purpose. If the error differs much from 0.03 or 0.04 uniL, Lh e numerical coefficients of eq (13) and (14 ) should b e actju ted accordingly. The difference as indicated b y a p~l meter may b e influen ced som ewhat by errors ll1 scale length and in the temperature comp ensator, if these have not b een calibrated.…”

Section: Ph Of Calcium Hydroxide Solutionsmentioning

confidence: 99%

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Calcium hydroxide as a highly alkaline pH standard

Bates¹,

Bower²,

Smith³

1956

J. RES. NATL. BUR. STAN.

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“…Az ezt követő munkákban nagyszámú adat található a CaOH + (aq) képződési állandójára különféle analitikai módszerekkel (oldhatósági- [3,15,64,[66][67][68], potenciometriás- [69,70], valamint kinetikai mérésekkel [2,71]) meghatározva.…”

Section: Az Ionpárok Képződéseunclassified

Néhány, hiperalkalikus körülmények között képződő Ca(II)-komplex oldategyensúlyainak és szerkezetének jellemzése

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The Solubility of Calcium Hydroxide in Aqueous Salt Solutions

Cited by 58 publications

References 0 publications

Field experience and the long-term durability of reinforced concrete structures

Field experience and the long-term durability of reinforced concrete structures

Calcium hydroxide as a highly alkaline pH standard

Néhány, hiperalkalikus körülmények között képződő Ca(II)-komplex oldategyensúlyainak és szerkezetének jellemzése

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