Construction of water glass paste for sandy soil, cement slurry and cement mortar for pebble stratum, why? What kind of slurry does the clay layer apply? In the case of the 153 page, it was written that the grout in the sand and gravel layer can be covered with cement slurry or the burden of the mortar, and the 152 pages of the modified water glass paste are suitable for sandy soil, cement Pulp and cement mortar for pebble stratum, what is the difference between sandy soil, sand and gravel, pebble strata? Question added: why 152 pages and 153 pages of preface does not take the language, it is more contradictory
Water glass chemical composition is Na2SiO3 · 9H2O, strong adhesion, high strength, acid resistance, good heat resistance, alkali resistance and poor water resistance Sandy soil loose, water glass cohesive strong, high strength suitable, and cement mortar and cement mortar if used in sand soil is also OK, but the effect is not good water glass The cement slurry and the cement mortar are used in the pebble form to be able to combine with the pebbles to increase their strength Commonly used cement slurry for clay Sand soil: refers to the sand with more particles and a certain viscosity of the soil No cohesion between the particles, the nature of loose, mainly from 0075 to 2 mm of particles composed of plastic-free soil Sand: particle size greater than 2mm particle quality does not exceed 50% of the total mass, particle size greater than 0075mm particle quality exceeds the total mass of 50% of the soil, should be named sand Sand soil: is coarse grained gravel (2-60mm) content of less than or equal to 50% of the total mass of soil The composition of the sandy soils lacks clay minerals, which are scattered in dry state and have no plasticity They have a single grain structure The particles with particle size greater than 0075mm are larger than 50% of the total mass and the coarse grain has a particle size of 2-20mm Of the gravel content of less than or equal to 50% of the soil Sand and gravel layer of the underlying particle size is not uniform, porosity, poor adhesion, good water permeability
0425 grade and above Portland cement, cement mortar
Cement slurry or cement mortar main component of the burden of care to keep the powder shop pimp P
