What is ASTM C476?

ASTM C476 defines two types of grout: fine and coarse. Fine grout contains sand smaller than ⅜ in. (9.5 mm) as its only aggregate, while coarse grout allows pea gravel smaller than ½ in. (13 mm), or other acceptable aggregate, in addition to the sand.

What is the minimum compressive strength of grout?

2,000 psi
3.2. Minimum grout compressive strength equals f’m but not less than 2,000 psi (13.79 MPa). The compressive strength of grout shall be determined in accordance with ASTM C 1019.

How do you mix CMU grout?

To produce a coarse grout according to Table 1, use the ratio of one part cement, two to three parts fine sand and one to two parts coarse sand.

What is the difference between grout and concrete?

Grout is usually used for sealing tiles in kitchens and bathrooms, as well as for sealing tubs, sinks, and showers to walls and floors. On the other hand, concrete is a large-scale building material used for pouring foundations, making walls, floors, driveways, and more.

What is the PSI of grout?

Grout used in tiling commonly features somewhere between 2,500 and 5,000 PSI, while high-strength grout for use with pre-cast concrete and steel columns can reach 12500 PSI.

What is grout slump?

Grout must contain enough water to produce an 8 inch to 11 inch slump per codes and ASTM C 476. The proper grout slump for the application will depend on several factors such as how much water will be absorbed by the adjacent masonry, weather, lift and pour height.

What type of grout is used to fill voids in CMU walls?

QUIKRETE® Core-Fill Grout (No. 1585-07, 1585-08) is a properly proportioned mixture of portland cement, graded sand, and other ingredients designed to provide a flowable grout requiring only the addition of water.

What is a fully grouted CMU wall?

When all cores, with or without reinforcement, are grouted, the wall is considered solidly grouted. If vertical reinforcement is spaced close together and/or there are a significant number of bond beams within the wall, it may be faster and more economical to solidly grout the wall.

What is ASTM C90 strength requirements?

The minimum net area compressive strength required for all three weight classifications for ASTM C90 loadbearing units is 1900 psi. Compressive strength is largely a function of the characteristics of the aggre- gate used in the units, and may vary regionally according to the types of aggregates available.

What is the ASTM standard for concrete?

The ASTM C39 test standard for compressive strength of concrete cylinders requires numerous checks for dimensions of the concrete cylinders and alignment during testing. The manual instructs and illustrates acceptable practices to properly perform these measurements.