This Part of BS 6319-2 describes the procedure for the measurement of the compressive strength of specimens of resin based mortars and concretes in the form of cubes. 1. Compressive strength :- The maximum stress (in N/mm2 ) carried by the test piece during a compressive test at the time of failure. 2. Principle : The …
BS 6319-2 : How to check the compressive strength of resin flooring Read More »
Application properties Shelf life :- Time of storage under stated conditions during which an adhesive is expected to maintain its working properties. Maturing time : Interval between the time when the cementitious adhesive is mixed and the time when it is ready for use Pot-life : Maximum time interval during which the adhesive can be used …
Tile adhesive : Application properties, technical terms and failure patterns Read More »
Adhesive failure :- Adhesive failure occurs in between tile and substrate as shown in figure 1 2.Cohesive failure :- Cohesive failure occurs within the tile adhesive when we apply more thick. materials. 3.Cohesive failure within the substrate :- This types of failure occurs because of weak substrate. 4. Cohesive failure within the tiles :- …
Tremie method :- A tremie is a water tight pipe, having approx. 250 mm is diameter, having a tunnel shaped hopper at its upper end and loose plug at the bottom or discharge end. During concreting air, water must be excluded from the tremie by keeping the pipe full of concrete all the time, and …
This Test standard specifies a method for determining the film hardness by pushing pencils of known hardness over the film and can be performed on a single coating of a paint, varnish or related product, or on the upper layer of a multi-coat system.
This test method covers the measurement of the linear shrinkage during setting and curing and the coefficient of thermal expansion of chemical-resistant mortars, grouts, mono�lithic surfacings, and polymer concretes. Linear shrinkage :- The material to be tested is placed in the mold in a fluid or plastic state. The linear shrinkage measured is the change …
Water Vapor Permeability—The time rate of water vapor transmission through unit area of flat material of unit thickness induced by unit vapor pressure difference between two specific surfaces, under specified temperature and humidity conditions. Water Vapor Permeance :- The time rate of water vapor transmission through unit area of flat material or construction induced by …
Water vapor permeability and water vapor transmission rate Read More »
This practice covers the calculation of the Solar Reflectance Index (SRI) of horizontal and low-sloped opaque surfaces at standard conditions. The method is intended to calculate SRI for surfaces with emissivity greater than 0.1. The steady-state surface temperature (Ts) under the sun is strongly correlated to solar reflectivity and thermal emissivity of the surface. For …
ASTM E 1980 : Standard Practice for Calculating Solar Reflectance Index Read More »
System of approach of Terrace Garden R.C.C slab Levelling screed Primer Waterproofing Protection board Drain shell Geotextile sheet Soil filling Gardening
Operation Involved in tunneling The hard rocks tunneling method has following sequence of operation for construction of tunnel :- Drilling Loading of holes Blasting Scaling mucking secondary blasting tunnel supporting Grouting and lining 1. Drilling :- Tunneling with explosive requires drilling of holes in to rocks. A drill holes are made with drills worked by …
