What are the dimensions of roughcast stones used in construction?
Release time:
2016-12-23
Source:
Shenyang Jingang Wollastonite Mining Co., Ltd. has been engaged in the construction rough stone industry for many years and boasts extensive experience. Below, we’ll introduce you to the dimensions of construction rough stones, hoping this will help you gain a deeper understanding of this industry.
Rough building stones—also known as quarry stones—are irregularly shaped blocks obtained directly after blasting in quarries. They are classified into two types according to the smoothness of their surfaces: rough stones and dressed stones. For construction purposes, rough stones typically require a minimum thickness of 150 mm in the middle part, a length ranging from 300 to 400 mm, and a weight of approximately 20 to 30 kg. Their compressive strength should not be less than 10 MPa, and their softening coefficient should not be lower than 0.75. These stones are commonly used for constructing foundations, plinths, wall bodies, dams, retaining walls, and can also be incorporated into rubble concrete mixtures.
Methods for Determining the Specification Dimensions and Strength Grades of Stone Materials
According to the degree of regularity in their finished shapes, stones can be classified into dressed stones and rough stones.
Cobblestone
1 Fine-faced stone: After fine processing, the surface should be regular. The depth of recesses on the stacking surface should not exceed 10 mm. The width and height of the cross-section should not be less than 200 mm, nor should they be less than one-fourth of the length.
2 Semi-fine stone: The specification dimensions are the same as above, but the depth of the recessed surface for stacking should not exceed 15 mm.
3 Rough rubble stone: The specification and dimensions are the same as above, but the depth of the recessed surface for stacking should not exceed 20 mm.
4 Rough-cut stone: The stones have a roughly square shape and are generally left unprocessed or only slightly trimmed. Their height should not be less than 200 mm, and the depth of any recesses on their bearing surfaces should not exceed 25 mm.
Architectural rubble stone
The shape is irregular, and the thickness in the middle should not be less than 200 mm.
The strength grade of stone materials can be expressed by the compressive strength of cubic specimens with a side length of 70 mm. The compressive strength shall be the average of the failure strengths of three specimens. Alternatively, cubic specimens with side lengths specified in Table A.2 may be used; however, their test results must be multiplied by the corresponding conversion factor before being used to determine the strength grade of the stone material.
The above are the dimensions of architectural rubble stone. If you’d like to learn more about this topic, feel free to give us a call—we’ll be happy to assist you!
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