CN103332913B - Water-impervious air-entrained concrete building block and preparation method thereof - Google Patents

Abstract

Water-impervious air-entrained concrete building block and preparation method thereof, is made up of the raw material of following weight part: cement 20-25, unslaked lime 15-20, gypsum 10-15, flyash 40-45, aluminium powder 0.1-0.2, sulfonated lignin 1-2, slag 20-25, cotton stalk powder 10-15, grape vine powder 10-15, used oil 2-3, Sodium Persulfate 1-2, sticky rice flour 2-3, water are appropriate.The air-entrained concrete building block that the present invention produces, wherein adopt oil foot, used oil composition, through initiator modification, add the hydrophobicity of building block, greatly improve its infiltration ability, building block of the present invention uses at community exterior wall, last more than 3 years, do not find wall leakage phenomenon, and adopt traditional air-entrained concrete building block, annual Jun You resident family appearance infiltration in spring.Adopt sticky rice flour slurrying in the present invention, the space in the better in-filled block of energy, reduces the possibility of infiltration.

Description

Water-impervious air-entrained concrete building block and preparation method thereof

Technical field

The invention belongs to a kind of building material technique, specifically a kind of concrete segment and preparation method thereof.

Background technology

Novel wall material gas concrete as a kind of less energy-consumption, the New Building Materials of environment-friendly type, belong to the material of construction that country promotes, but because ordinary air-entrained concrete is made up of cement, flyash, unslaked lime, gypsum etc., there is the problems such as drying shrinkage value is large, intensity is low, infiltration, not corrosion-resistant, thermal insulation is not good, material source is single, therefore, be badly in need of air-entrained concrete building block technology is studied further, make the requirement further meeting market.

Summary of the invention

The object of this invention is to provide water-impervious air-entrained concrete building block and preparation method thereof, with solve current air-entrained concrete building block exist easily ooze water problem.

Technical solution of the present invention is as follows:

A kind of water-impervious air-entrained concrete building block, is characterized in that being made up of the raw material of following weight part: cement 20-25, unslaked lime 15-20, gypsum 10-15, flyash 40-45, aluminium powder 0.1-0.2, sulfonated lignin 1-2, slag 20-25, cotton stalk powder 10-15, grape vine powder 10-15, used oil 2-3, Sodium Persulfate 1-2, sticky rice flour 2-3, water are appropriate.

The preparation method of described water-impervious air-entrained concrete building block, is characterized in that comprising the following steps:

(1), by sticky rice flour add suitable quantity of water, boil into magma soup, stir, add used oil, then add cotton stalk powder, grape vine powder, stir 30-45 minute, then add sulfonated lignin, Sodium Persulfate, stir after 30-45 minute, add gypsum, stir into mud;

(2), by cement, flyash add 60-70 DEG C of hot water mixing 10-15 minute, then, add mud and other material such as unslaked lime, aluminium powder of step (1) gained, stir 10-15 minute, obtain the slurry that water content is 30-35%;

(3), by slurry pour into a mould, to send in 40-60 DEG C of drying room after precuring 1.5-2.5 hour, cut into building block base;

(4), by building block send into steam press maintenance in still, vapor pressure 1-1.3Mpa, the steam-cured time 6-8.0h of constant voltage obtains finished product.

The air-entrained concrete building block that the present invention produces, wherein adopt oil foot, used oil composition, through initiator modification, add the hydrophobicity of building block, greatly improve its infiltration ability, building block of the present invention uses at community exterior wall, last more than 3 years, do not find wall leakage phenomenon, and adopt traditional air-entrained concrete building block, annual Jun You resident family appearance infiltration in spring.Adopt sticky rice flour slurrying in the present invention, the space in the better in-filled block of energy, reduces the possibility of infiltration.

The air-entrained concrete building block that the present invention produces has that ultimate compression strength is high, light weight, sound insulation, heat insulation, good heat preservation performance, anti-freezing property and the advantage such as contraction is little thereof, solves the defect that traditional air-entrained concrete building block intensity is low, easy to crack.

Embodiment

A kind of water-impervious air-entrained concrete building block, is made up of the raw material of following weight part (kilogram): cement 20, unslaked lime 15, gypsum 10, flyash 45, aluminium powder 0.2, sulfonated lignin 2, slag 20, cotton stalk powder 10, grape vine powder 10, used oil 3, Sodium Persulfate 2, sticky rice flour 2, water are appropriate.

The preparation method of water-impervious air-entrained concrete building block, is characterized in that comprising the following steps:

(1), by sticky rice flour add suitable quantity of water, boil into magma soup, stir, add used oil, then add cotton stalk powder, grape vine powder, stir 30-45 minute, then add sulfonated lignin, Sodium Persulfate, stir after 30-45 minute, add gypsum, stir into mud;

(2), by cement, flyash add 60-70 DEG C of hot water mixing 10-15 minute, then, add mud and other material such as unslaked lime, aluminium powder of step (1) gained, stir 10-15 minute, obtain the slurry that water content is 30-35%;

(3), by slurry pour into a mould, to send in 40-60 DEG C of drying room after precuring 1.5-2.5 hour, cut into building block base;

(4), by building block send into steam press maintenance in still, vapor pressure 1-1.3Mpa, the steam-cured time 6-8.0h of constant voltage obtains finished product.

The cubes that the hollow brick that the present invention produces cuts into 100mm × 100mm × 100mm is carried out Performance Detection, and detected result is as follows: ultimate compression strength 5.18Mpa, shrinkage value 0.42mm/m, frost resistance loss of strength 16%.

Claims (2)

1. a water-impervious air-entrained concrete building block, is characterized in that being made up of the raw material of following weight part: cement 20-25, unslaked lime 15-20, gypsum 10-15, flyash 40-45, aluminium powder 0.1-0.2, sulfonated lignin 1-2, slag 20-25, cotton stalk powder 10-15, grape vine powder 10-15, used oil 2-3, Sodium Persulfate 1-2, sticky rice flour 2-3, water are appropriate.

2. the preparation method of water-impervious air-entrained concrete building block according to claim 1, is characterized in that comprising the following steps:

(1), by sticky rice flour add suitable quantity of water, boil into magma soup, stir, add used oil, then add cotton stalk powder, grape vine powder, stir 30-45 minute, then add sulfonated lignin, Sodium Persulfate, stir after 30-45 minute, add gypsum, stir into mud;

(2), by cement, flyash add 60-70 DEG C of hot water mixing 10-15 minute, then, add mud and other material such as unslaked lime, aluminium powder of step (1) gained, stir 10-15 minute, obtain the slurry that water content is 30-35%;

(3), by slurry pour into a mould, to send in 40-60 DEG C of drying room after precuring 1.5-2.5 hour, cut into building block base;

(4), by building block send into steam press maintenance in still, vapor pressure 1-1.3Mpa, the steam-cured time 6-8.0h of constant voltage obtains finished product.