Water Absorption Rate of Lightweight Concrete

The water absorption rate of lightweight concrete is an important technical index to measure the durability and physical properties of foam concrete.

Almost all the procedural failure processes that affect the durability of concrete are closely related to water, especially light-weight concrete. Foamed concrete is an important part of flotation, and minerals emerge along with the foam.

 Foam formation and properties

(1) Reasons for formation Foam is a coarse dispersion system with gas as the dispersed phase and solid or liquid phase as the dispersion medium. This section mainly discusses the foam where the dispersion medium is an aqueous solution.

Lightweight concrete (Concrete) exhibits the following disadvantages after absorbing water:

1. After absorbing water, the strength of the lightweight concrete decreases and the heat preservation performance decreases.

2. Too much water absorption will reduce the adhesion between lightweight concrete and structural layer or waterproof layer (intermolecular at the interface between the adhesive and the bonded object), agrietamiento, hollowing, and delamination will occur after a long time.

3. Lightweight concrete can reduce its frost resistance after absorbing water, the more water it absorbs, the worse the frost resistance;

4. Various harmful substances can use water as a carrier to erode the inside of concrete. Water carries a large amount of salt-alkali substances dissolved therein, which can make the surface alkalinize, crack and whiten, shortening its service life.

Foamed concrete has many pores, and if the bubbles are connected, it is easier to absorb water. Velocidad ár nju̲ts'i ar ha̲i ligera burbujas ndähi ar ngut'a: ho̲ntho máquinas simples xi utilizar ar pa da tsoni ar operación automática, ne ar tsa̲ da realizar transporte xí maa distancia 800 r, ne ar carga ar 'be̲fi ar 150 — 300 m³ yá pa 'be̲fi. Ar tasa absorción ar dehe ar hormigón espuma inferior to exceder 30%. However, nu'bu̲ ya poros gi 'bu̲hu̲ cerrados, otho absorción ar dehe ni tasa absorción ar dehe, Nja'bu da hormigón espuma espuma célula cerrada 'nehe bí llamado ja ya primeros pa.

Ar irrealista ne innecesario pa requerir hormigón ligero pa nu'bu completamente ar absorción ar dehe. nu'bu̲ ar superficie hingi absorbe ar dehe jar ga̲tho, ar mortero 'nehe da mets'i dificultad vinculación ko azulejos chapa wa superficies finas ar hormigón Nunu̲.

Combinado ko ya características ar concreto ligero hä xkagentho, tasa absorción ar dehe ar controla ja 10%-25%; nu'bu̲ ar gi japu̲'be̲fi pa ar aislamiento, tasa absorción ar dehe to da controlada jar inferior. Foamed concrete, 'nehe llamado su̲mento espumado wa hormigón espumado, ge 'nar 'ra'yo klase ar he̲'mi aislamiento térmico ligero desarrollado jar últimos ya je̲ya. gi japu̲'be̲fi su̲mento Portland, materiales sílice activa, fly ash, etc. komongu aglutinantes inorgánicos, ne gi japu̲'be̲fi polimerización térmica. Surfactantes ar o̲t'e ir nge ar mezcla aglutinantes orgánicos. ár característica destacada ge ar formación Nar dätä hño yá 'bede ya células espuma cerradas jar ár interior pa ndi da ligero ne térmicamente aislado, pa da pe̲ts'i ya características be̲xu ligero, mextha resistencia, m, e, t, resistencia ar dehe ne absorción impacto.

Cie-China.org ar proveedor líder aditivos hormigón espuma, proporcionando agentes espumante hormigón, superplasticizer,reforzador ar resistencia ar hormigón espuma pa hormigón ligero, bloques CLC. Nu'bu̲ gí 'bu̲i mí honiagentes espumadores., Jaki ar mäte, hingi dude arga japi ar jar contacto ko ngekihe.