Application Number: 00102864
Application Date: 2000.03.06
Publication Number: 1312233
Publication Date: 2001.09.12
Priority Information:
International: C04B22/14
Applicant(s) Name: Li Zhigang
Address:
Inventor(s) Name: Li Zhigang
Patent Agency Code: 00000
Patent Agent:
Abstract The present invention provides an expansion concrete and its low-alkali high-efficiency concrete expansion agent. Said expansion concrete is comprised of cement 10-20%, sand 20-40%, stone 30-60% and expansion agent whose content is 6-10% of cement weight, and the described expansion concrete is a compensation contraction concrete or large expansion joining concrete, and its expansion agent is characterized by that it is made by powdering 20-40% of jiaobaoshi stone calcined at 700 deg.C-1100 deg.c, 5-20% of aluminium sulfate and 40-60% of anhydrite. Said expansion agent possesses the advantages of high expansion rate, low admixing quantity, low alkali content, long storage time, good weather resistance, high strength, acid-resistance, alkali-proofing property and low cost, etc.