The main reason why lime and cement are generally not used alone is that
Cement: mixing water into a plastic paste, cement and water will produce exothermic reaction in the cement hardening process, a large amount of heat released continuously, without sand, stone and other materials, the hydration heat will burn itself, and reduce the intensity of cracks, adding sand and stone material to reduce cement the dosage and reduce the hydration heat, reduce the cracks, the strength is relatively high, reducing the cost of.
The main reason why lime and cement are not used alone is that these materials will produce great shrinkage deformation during the process of setting and hardening, which will lead to cracking and cracking.
You use cement bricks, not the cost.Lime can not be used alone, and sand, hemp, paper used together. Reason: when lime hardens, the volume contraction is big, also may terminate the lime
The characteristics of the material itself are determinedBecause lime in the coagulation, hardening process, the volume to shrink, so use it as a product, surface roughness, can not be used as decoration materials alone, must add some fiber reinforced material, reduce its contraction. Moreover, because the strength of the hardened lime is not high, it can not be used as a structural material only. It can only be used as an enclosure structure.
