2014年1月16日 · This paper describes the techniques available to ensure correct diagnosis of defects in lime-based construction materials. It commences with a discussion of the types of defects and their causes. Details of the techniques used for investigation of defects and their diagnosis follow.

2022年5月7日 · What you have found is Stylar End Breakdown. This is a fairly common defect found on limes, and one that may be a problem for you. It is the most serious post harvest disorder affecting the lime industry. Its cause is physiological, meaning stylar end breakdown is not caused by a pathogen or insect.

The lime defects and blemishes glossary was developed by the TOMA Food Applications Engineering, Research and Development, and Product Management teams. The information on this page focuses on defects and blemishes observed globally and includes notes on regional naming conventions and variations of defects.

Yellowing (#1) is due to age, and is scored as a defect when the yellow color is plainly visible. In other words, whenever you see any amount of yellow color, the lime is scored against the (5%) tolerance for serious damage. Blanching (#2) is due to the lime not coloring up properly during the growing process.

The lime absorb water and expand after its exposure to firing. Consequently, lime blowing will take place. Bricks susceptible to lime blowing can be identified by submerging the brick in water.

2023年9月11日 · What are the defects of lime in construction? Deterioration processes can result in a range of defects including cracking, debonding, loss of strength and surface erosion. Lime mortars, plasters and renders are designed to be weaker than masonry units (i.e. stone or clay bricks) and are intended to decay in a sacrificial manner in order to ...

Following are the various laboratory tests conducted to lime to find its suitability as a building material: 1. Loss on Ignition Test (LOI) on Building Lime. The relative degree of calcination that is happened in the lime can be monitored with the help of the loss of ignition test.

It lists 7 common defects: 1) swelling or blistering due to inferior lime quality, 2) cracks from background movement or plaster shrinkage, 3) falling plaster from poor adhesion or moisture, 4) whitish crystals from salt impurities, 5) early cracks from improper surface preparation or drying, 6) long-term cracks from material expansion ...

Magnesium Oxide (MgO) is a problem in high calcium lime as it affects the reactivity of the lime. The dissociation temperatures (temperature when CO2 is driven off) for high calcium oxide is about 898°C, while magnesium oxide is about 760°C. This makes the magnesium oxide “hard burned” and therefore, slow slaking and less active.

Leaching of lime compounds can lead to the formation of calcium carbonate or calcium sulphate on the surface of the concrete; this is known as ‘efflorescence’. Two forms occur, namely lime bloom and lime weeping. Lime bloom appears as white patches or an over-all lightening of the surface of the concrete. This is a cosmetic problem.