2005
DOI: 10.1016/j.cemconcomp.2005.06.003
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Attack of cement pastes exposed to organic acids in manure

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Cited by 96 publications
(70 citation statements)
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“…Accordingly, several tests of cement paste leaching by carboxylic acid solutions have been performed with acid concentrations of 280 mmol/L [18,21,44] or 300 mmol/L [19] with respect to the maximum concentration of acids found in liquid manure [3]. Also, total carboxylic acid concentrations have been measured in the range 300 -400 mmol/L during experiments on the biodegradation of Portland cement paste by fungi [22].…”
Section: Chemical Conditions Carboxylic Acid Concentrationsmentioning
confidence: 99%
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“…Accordingly, several tests of cement paste leaching by carboxylic acid solutions have been performed with acid concentrations of 280 mmol/L [18,21,44] or 300 mmol/L [19] with respect to the maximum concentration of acids found in liquid manure [3]. Also, total carboxylic acid concentrations have been measured in the range 300 -400 mmol/L during experiments on the biodegradation of Portland cement paste by fungi [22].…”
Section: Chemical Conditions Carboxylic Acid Concentrationsmentioning
confidence: 99%
“…The total concentrations of aluminium and calcium considered in the speciation modelling were chosen according to the results of leaching tests of Portland cement pastes [13,21,22]. Al total concentrations varied from 0.02 to 3 mmol/L and Ca total concentrations ranged from 0.1 to 100 mmol/L.…”
Section: Element Concentrationsmentioning
confidence: 99%
“…Si se trata de estiércol líquido, este contiene una mezcla de ácidos volátiles como son el acético, el propiónico, el butírico y el isobutírico, con un pH alrededor de 6-8 [5]. Estudios existentes de Bertron et al [6] sugirieron que el uso de ácido acético es adecuado para recrear el ataque ácido del estiércol líquido sobre el hormigón, mientras que provoca efectos más suaves que los producidos por efluentes de ensilado. Por lo tanto, para simular el deterioro del hormigón en ambos ambientes agrícolas, se combinaron el ácido láctico y el acético (CH 3 -CHOH-COOH y CH 3 -COOH).…”
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“…The mechanical stresses on surfaces of in animal buildings come especially from animals and machines. The chemical stresses especially are due to milk, silage and manure (ACI 515.1R-79 1985, Bertron et al 2005, Nilsson 2005). Because concrete is a very porous material, in many cases the improvement of concrete is based on limiting its absorption of liquids (Barbucci et al 1997, Almusallam et al 2003, Moon et al 2007).…”
Section: Concrete Materials and Coatingsmentioning
confidence: 99%