Light high-strength rock ballast powder concrete energy-saving building block and manufacturing method thereof

A technology of concrete and gravel, which is applied in the field of building materials and can solve problems such as complex block production processes

Inactive Publication Date: 2012-01-11
丰泽区新安江新型建筑材料厂 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] (2) There are construction problems in filling or pouring light aggregate concrete in the holes of ordinary concrete blocks
[0010] (3) Composite lightweight polystyrene boards in ordinary concrete blocks have the problem of complicated block production technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1: A lightweight high-strength gravel powder concrete energy-saving block, which is a hollow block made of cement, gravel powder, polystyrene particles, thick-walled hollow microspheres, binder, and water , wherein, the preparation weight ratio of each component is cement: gravel powder: polystyrene particles: thick-walled hollow microspheres: binder: water = 1:4:0.04:0.7:0.02:0.426.

[0045] The main performance indicators of the block are: the thermal conductivity of concrete is less than or equal to 0.2 (W / m K); 2 ·K) ， 200mm thickness (five rows of holes) block wall heat transfer coefficient is reduced to K≤0.85W / (m 2 ·K) ； The thermal inertia index is maintained at about 3.0; the compressive strength of the block is ≥10MPa; the strength of the block reaches MU10.

Embodiment 2

[0046] Embodiment 2: the difference between this embodiment and embodiment 1 is:

[0047] The preparation weight ratio of each component is cement: gravel powder: polystyrene particles: thick-walled hollow microspheres: binder: water = 1:3:0.03:0.8:0.01:0.35.

[0048] The main performance indicators of the block are: the thermal conductivity of concrete is less than or equal to 0.22 (W / m K); the heat transfer coefficient of the block wall with a thickness of 180mm (four rows of holes) is K≤1.0W / (m 2 ·K) ， 200mm thickness (five rows of holes) block wall heat transfer coefficient is reduced to K≤0.9W / (m 2 ·K) ； The thermal inertia index is maintained at about 3.0; the compressive strength of the block is ≥15MPa; the strength of the block reaches MU10.

Embodiment 3

[0049] Embodiment 3: the difference between this embodiment and embodiment 1 is:

[0050] The preparation weight ratio of each component is cement: gravel powder: polystyrene particles: thick-walled hollow microspheres: binder: water = 1:5:0.06:0.5:0.025:0.5.

[0051] The main performance indicators of the block are: the thermal conductivity of concrete is ≤0.18 (W / m K); the heat transfer coefficient of the 180mm thick (four rows of holes) block wall is K≤0.90W / (m 2 ·K) ， 200mm thickness (five rows of holes) block wall heat transfer coefficient is reduced to K≤0.80W / (m 2 ·K) ； The thermal inertia index is maintained at about 3.0; the compressive strength of the block is ≥ 8MPa; the strength of the block reaches MU10.

[0052] The preparation method of the above-mentioned lightweight high-strength gravel powder concrete energy-saving block:

[0053] a) Material preparation: Weigh cement, gravel powder, polystyrene particles, thick-walled hollow microspheres, binder and wate...

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Abstract

A light high-strength rock ballast powder concrete energy-saving building block contains the raw materials in percent by weight: 1 percent of cement, 3-5 percent of rock ballast powder, 0.03-0.06 percent of polystyrene particles, 0.5-0.8 percent of thick-wall hollow beads, 0.01-0.02 percent of binder and 0.35-0.5 percent of water. The building block is manufactured by the steps of stirring, molding, standing and curing. Part of rock ballast powder is replaced by the polystyrene particles with same volume, a building block wall rib is thinned and the number of discharging holes of the buildingblock is increased, and the heat transfer resistance of the building block wall is improved. The technical problem of poor mixture fluidity caused by adding the polystyrene particles is solved by doping the thick-wall hollow beads which have smooth surfaces, low density and thermal conductivity, good fluidity and high strength is solved, and the doping amount of the polystyrene particles is greatly increased. The problem of surface wettability of the polystyrene particles is solved by the doping of the binder, so that the polystyrene particles are tightly bonded with the cement paste to ensure that strength and impervious capability of the rock ballast powder concrete building block rib are not reduced due to the introduction of the polystyrene particles. Normal compression moulding of the polystyrene concrete building block is realized and strengths of the wall and the rib of the building block are improved by adopting the technologies of low-frequency charging, high-frequency molding and automatic change of frequency amplitude.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to a light-weight high-strength gravel powder concrete energy-saving block and a preparation method thereof. Background technique [0002] Domestically, four technical approaches have been taken to improve the thermal performance of small concrete hollow blocks. The first three technical approaches are: using lightweight aggregate concrete, changing the block hole structure, filling the cavity of the block with thermal insulation materials and adopting a composite structure, changing the masonry structure. The report of block hole structure is not described because it has nothing to do with this patent. The fourth technical approach is "A Hollow Block of Thermal Insulation Concrete and Its Preparation Method" invented by the applicant (Patent No. ZL200610044759.5). [0003] Reports on the use of lightweight aggregate concrete include: Fu Xiangtao [1] ZMQ Blocks and Tang...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00
Inventor 薛宗明田正艾严捍东
Owner 丰泽区新安江新型建筑材料厂
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