Concrete composition containing ultra-fine carbonate rock powder and preparation method thereof

A concrete composition and carbonate rock technology are applied in the field of concrete building materials to achieve the effects of reduced mixing water consumption, cost reduction and low energy consumption

Inactive Publication Date: 2007-08-15
北京恒坤混凝土有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to provide a kind of concrete composition containing superfine carbonate rock powder and preparation method thereof, solve the problem that further improves concrete mechanical property and durable performance, solve the problem that further reduces cement consumption and water consumption in concrete simultaneously, Improve the cost performance of concrete, save resources and energy, and protect the environment

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  • Concrete composition containing ultra-fine carbonate rock powder and preparation method thereof
  • Concrete composition containing ultra-fine carbonate rock powder and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0046]Concrete was prepared according to the following raw materials and the concrete mix ratio shown in Table 3, and the compressive strength was measured. Mix01-Mix06 in Table 3 is the mixing ratio of the example. The multi-component powder is composed of cement, finely ground slag and ultra-fine carbonate rock powder, and polycarboxylate high-efficiency water reducer is added. Cement and finely ground slag each account for 50% of the cementing material; ultrafine carbonate rock powder accounts for 20%-37% of the total powder material in the concrete. Mix07-Mix12 in Table 3 is the proportion of comparative examples, without adding ultra-fine carbonate rock powder.

[0047] (1), raw materials:

[0048] Cement: Luquan Dingxin Ordinary Portland Cement P.O 42.5;

[0049] Mineral admixture: finely ground slag produced by Beijing Shougang, specific gravity 2.9, fineness specific surface area: 400m 2 / kg;

[0050] Sand: medium sand;

[0051] Gravel: 5-20mm gravel;

[0052] Hi...

Embodiment 2

[0065] Embodiment 2: Concrete was prepared according to the following raw materials and the concrete mix ratio shown in Table 5, and the compressive strength was measured. Mix13-Mix17 in Table 5 is the mixing ratio of the example. The multi-component powder is composed of cement, fly ash and ultra-fine carbonate rock powder, and polycarboxylate high-efficiency water reducer is added. Cement and fly ash each account for 50% of the cementing material; ultrafine carbonate rock powder accounts for 28%-29% of the powder material content in the concrete. Mix18-Mix22 in Table 5 is the proportion of comparative examples, without adding ultrafine carbonate rock powder.

[0066] (1), raw materials:

[0067] Cement, sand, crushed stone, superfine carbonate rock powder: same as embodiment 1; Mineral admixture: adopt the fly ash of Shijingshan, Beijing; High-efficiency water reducer: Glenium Ace68 polycarboxylate high-efficiency water reducer of BASF chemical building materials Aqua.

...

Embodiment 3

[0076] Embodiment 3: Concrete was prepared according to the following raw materials and the concrete mix ratio shown in Table 7, and the compressive strength was measured. The mixing ratio of Mix23-Mix26 in Table 7 is an example. The multi-component powder is composed of cement, ground slag and ultra-fine carbonate rock powder, and a naphthalene-based high-efficiency water reducer is added. Cement and finely ground slag each account for 50% of the cementing material; ultrafine carbonate rock powder accounts for 28%-37% of the powder material content in the concrete. The mixing ratio of Mix27-Mix29 in Table 7 is a comparative example without adding ultra-fine carbonate rock powder.

[0077] (1), raw materials:

[0078] Cement, sand, crushed stone, superfine carbonate rock powder: same as embodiment 1; mineral admixture: adopt the ground slag produced by Beijing Shougang, specific gravity 2.9, fineness specific surface area: 400m 2 / kg; high-efficiency water reducer: Tianjin Y...

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Abstract

The invention discloses a concrete composition with hyperfine carbonate rock powder and allocating method, which comprises the following parts: polyvalent powder, additive, rough aggregate, fine aggregate and water, wherein the scale of polyvalent powder in per cubic meter concrete is 300kg / m3-550kg / m3, which contains 70kg / m3-150kg / m3 hyperfine carbonate rock powder, 20%-100% cement and mineral material.

Description

(1) Technical field [0001] The invention relates to a concrete building material. (2) Background technology [0002] Concrete is the most widely used building material in modern times. It is mainly composed of cement, mixed with mineral admixtures, added with water and admixtures to prepare a cement paste, and then mixed with sand and stone evenly, poured on beams, columns, In various models such as walls and slabs, engineering materials that solidify and form a whole. Concrete is a multi-component multi-phase cement-based composite material containing three phases of solid, liquid and gas, which is formed by mixing various raw materials with water and hardening. Due to the existence of a large number of micro-pores in concrete, it is the existence of these micro-pores that affect the compactness, mechanical properties and impermeability of concrete. The water-binder ratio of concrete is the ratio of the water in the concrete to the weight of the cementitious material. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B18/12C04B14/26C04B18/08C04B18/14C04B24/24C04B24/22
CPCC04B28/02
Inventor 段雄辉何涌东于鸣新
Owner 北京恒坤混凝土有限公司
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