What is ASTM C109?

ASTM C109 is a compression test determine the compressive strength of hydraulic cement and other mortars. The results of the ASTM C109 compression test may be used to determine compliance with specifications. Further, the ASTM C109 test method is referenced by numerous other specifications and test methods.

What is ASTM C270?

The ASTM Standard C270 (Mortar for Unit Masonry) provides the basis for specifying cement-lime mortars. This specification provides the basis for five different mortar types (Type K is listed in section X3 of the appendix) depending on the strength of mortar needed for an application.

What is ASTM c150 Type III cement?

– Type III—High-early-strength portland cement is often produced by grinding Type I clinker finer or by altering the chemical composition of the cement. – Type IV—Low-heat portland cement. Not currently made in the United States and limited in production elsewhere.

What is flexural strength of concrete?

Flexural strength is one measure of the tensile strength of concrete. It is a measure of an unreinforced con- crete beam or slab to resist failure in bending. It is measured by loading 6 x 6-inch (150 x 150-mm) con- crete beams with a span length at least three times the depth.

What is ASTM C136?

ASTM C136, 2006 Edition, February 15, 2006 – Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates. This test method covers the determination of the particle size distribution of fine and coarse aggregates by sieving.

What is ASTM c780?

ASTM C 780 is a field test method which defines standard procedures for sampling and testing mortars before and during their use in construction. Mortars can be tested to determine composition or to obtain their plastic and harden properties.

What is ASTM c94?

ASTM C 94 “Standard Specifica- tion. for Ready Mixed Concrete” is the specification almost uni- versally used in the United States for concrete manufactured and deliv- ered to a purchaser in a freshly mixed and unhardened state.

What is the minimum flexural strength of concrete?

A flexural strength of 4.1 MPa (600 psi) is required to open pavement to traffic prior to 14 days after placement. These specifications raise several issues with regard to the quality of concrete specified and the methods used to ensure compliance with the specifications.

What is flexural strength formula?

Flexural strength test Flexural strength is calculated using the equation: F= PL/ (bd 2 )———-3 Where, F= Flexural strength of concrete (in MPa). P= Failure load (in N). L= Effective span of the beam (400mm). b= Breadth of the beam (100mm).

What is ASTM C39?

ASTM C39 determines the compressive strength of cylindrical concrete specimens such as molded cylinders and drilled cores. It is limited to concrete having a unit weight in excess of 50 lb/ft3 (800 kg/m3). A compressive axial load is applied to molded cylinders or cores until failure occurs.

What is ASTM C295?

ASTM C295 – Aggregates – Cementitious Materials – Cementitious Mixtures – Concrete – Minerals – Petrographic Examination – Petrography – Rocks.

What is ASTM C140?

ASTM C140, 2013 Edition, March 15, 2013 – Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units. These test methods provide various testing procedures commonly used for evaluating characteristics of concrete masonry units and related concrete units.

What is mortar prism test?

PRISM PREPARATION. The procedure for the preparation of mortar and render prisms is set out in I.S. EN 1015-11 ‘Methods of test for mortar for masonry – Part 11: Determination of flexural and compressive strength of hardened mortar’.

What are ASTM standards for concrete masonry?

Currently, seven ASTM standards apply to units intended primarily for construction of concrete masonry walls, beams, columns or specialty applications (see Table 1). The letter and first number of an ASTM designation is the fixed designation for that standard. For example, ASTM C55 is the fixed designation for concrete building brick.

How do you determine conformance to ASTM c55-03?

An approved sample of at least four units, representing the range of color and texture permitted, is used to determine conformance. ASTM C55-03 (ref. 9a) included two grades of concrete brick: Grade N for veneer and facing applications and Grade S for general use.

What is the ASTM c1157 Type GU cement?

In addition, portland cement can also be specified under ASTM C1157 (Standard Performance Specification for Hydraulic Cement) as: – Type GU—general use. – Type HE— high early strength. – Type MS—moderate sulfate resistance. – Type HS—high sulfate resistance. – Type MH—moderate heat of hydration. – Type LH—low heat of hydration.

What are the physical requirements of ASTM C90?

Physical requirements prescribed by ASTM C90 include dimensional tolerances, minimum face shell and web thicknesses for hollow units, minimum strength and maximum absorption requirements, and maximum linear shrinkage. Overall unit dimensions (width, height and length) can vary by no more than ±⅛ in. (3.2 mm) from the standard specified dimension.